Saturday, December 6, 2014

Free Stargazing Talk - Orion the Hunter


The next public stargazing talk is titled "Orion the Hunter".

Date: Saturday, 6 December 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!

Three stars in a straight line. Even non amateur astronomers recognise this unique and obvious pattern in the night sky. So did ancient Pharaohs and Egyptians thousands of years ago!

Credit: Wikipedia

Though it's monsoon period in Singapore, whenever the skies are partially clear, this is a great time to observe the magnificent Orion constellation and many cosmic wonders around it.

Come attend this talk to see for yourselves how they look like and how to find them in the sky. With this understanding, you will be able to enjoy observing them even more. Especially if you are going overseas to a dark sky country for holidays!

Weather permitting, we will be conducting live stargazing during/after the talk. My friends and I will be deploying our telescopes just outside the main entrance of the library.

So bring your family and friends along and join in the fun!

Saturday, November 1, 2014

Free Stargazing Talk - Clash of the Titans



The next public stargazing talk is titled "Clash of the Titans".

Date: Saturday, 1 November 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!

Clash of the Titans. You read about this Greek mythology. You even watched the movie. Medusa, Perseus, Cassiopeia, Andromeda, a terrifying sea monster and that cool flying white horse?

But did you know most of them have their corresponding star constellations in the night sky? And in them, some of the most amazing, mind-boggling cosmic objects? Some of them can be seen with just our eyes alone on a clear night!



Come attend this talk to see for yourselves how they look like and how to find them in the sky. With this understanding, you will be able to enjoy observing them even more.

Weather permitting, we will be conducting live stargazing during/after the talk. My friends and I will be deploying our telescopes just outside the main entrance of the library.

So bring your family and friends along and join in the fun!

Monday, October 6, 2014

Total Lunar Eclipse - 8 Oct 2014 (Wednesday)



On Wednesday 8 Oct, go to any location in Singapore with unobstructed view of the eastern horizon. From 6:52pm - 8:34pm, observe the Moon rising from the East.

There is a Total Lunar Eclipse happening on 8 October 2014 Wednesday.

Weather permitting, this is visible from Singapore and many other countries but not from Europe or Africa.

Here are the timings of the different phases of the eclipse in Singapore Standard Time (UT +8) rounded down to nearest minute.

TOTAL LUNAR ECLIPSE - 8 OCT 2014 (WED):

Penumbral Eclipse Begins          =   4:15 pm   (not visible, below horizon)
Partial Eclipse Begins (Umbra)  =   5:14 pm   (not visible, below horizon)
Total Eclipse Begins:                  =   6:25 pm   (not visible, below horizon)
Moon rise                                    =   6:52 pm   (rises from east at azimuth 83°)
Greatest Eclipse:                         =   6:54 pm
Total Eclipse Ends:                     =   7:24 pm
Partial Eclipse Ends (Umbra)     =   8:34 pm
Penumbral Eclipse Ends:            =   9.33 pm

(Source:  NASA Eclipse Website, Fred Espenak)

In the context of a Lunar Eclipse:

Umbra = inner, darker shadow of Earth.
Penumbra = outer, lighter shadow of Earth.

Image Credit: Wikipedia 

In the following simulation of Moon as seen from Earth during this eclipse, the inner circle represents umbra shadow of Earth and the other circle represents the penumbra shadow of Earth.


Image Credit: Wikipedia

Thus, the visually more exciting part of a Total Lunar Eclipse is from the beginning till the end of the umbra phase, i.e. from 5:14pm - 8:34pm. Since Moon only rises from 6:52pm from Singapore on that day, we will not be able to see the first half of the umbra phase.

If someone ask you how to observe this eclipse in Singapore, just ask them to read this blog. :)

Or, give them the shorter version - the first paragraph of this blog.

This is a timelapse video of the Total Lunar Eclipse in 2011 shot from Singapore by my friend Ivan Bok:




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Additional notes:

(1) The ability to observe Total Lunar Eclipse, like all astronomical event, is totally dependent on the weather. So manage your expectation as there is always a possibility of not seeing it due to bad weather - rain, cloud, haze, ...etc.

Moreover, the atmosphere near horizon is more turbulent compared to higher altitude. Even if you can spot the Moon very early just above the horizon, it may look fuzzy or slightly distorted.

Having said that, if there is only very thin layer of clouds and/or haze, Moon may still be visible through them, especially during a Full Moon phase in this case.

(2) Due to the haze situation, you may not find it safe to observe it outdoors. In that case, observe it indoors through windows or glass wall instead! Find one with a good unobstructed view of the east where the Moon will be rising.

(3) If you can't go to a location with unobstructed view of the eastern horizon (e.g. beach), try observing the eclipse from a tall building (e.g. roof-top garden, multi-storey carpark).

(4) If you have a telescope or even an old pair of binocular, trying observing the Moon with it. Unlike solar eclipse, lunar eclipse is very safe to observe with our eyes alone or through optical instruments. You don't need to observe it via its reflection off a pail of water. :)

(5) If you have camera, videocamera with decent optical zoom, try zooming in on Moon and take some photos and videos. Check out these incredible mega-zoom camcorder videos in this blog.

(6) The eclipse will happen near the horizon. At the end of umbra, it is only 23° above horizon. If you are into photography, you can make use of this fact to frame both the Moon and some nearby interesting terrestrial objects in your composition.

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*Weather permitting*, my friends and I will be at Bishan Park McDonald's this Wednesday to observe the eclipse. From that location, there is a good view of the eastern horizon.

We will be bringing our telescopes along for public viewing and to take eclipse photos through these telescopes with mobile phones.

Feel free to join us there with your family and friends!

Check my tweets for the latest updates on that day --> http://www.twitter.com/astrosg

Have fun observing this eclipse. Good luck and clear skies to all!




Saturday, October 4, 2014

Free Stargazing Talk - Sun, Moon & Eclipses



The next public stargazing talk is titled "Sun, Moon & Eclipses".

Date: Saturday, 4 October 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!

Sun, Moon and Earth lining up in a straight line - an extraordinary celestial wonder that has fascinated human civilisation for millennia and many more to come!

Come attend this talk to see for yourselves how they look like and understand the basic astronomical concepts involved. With this understanding, you will be able to enjoy observing them even more.

Eclipses actually happen quite frequently but appears very rare to the general public because they do not know in advance when and where to look for them.

Learn how to read eclipse charts and find out about upcoming solar and lunar eclipses. There is even one visible from Singapore next Wednesday early evening!

Weather permitting, we will be conducting live stargazing during/after the talk. My friends and I will be deploying our telescopes just outside the main entrance of the library.

So bring your family and friends along and join in the fun!

Saturday, September 13, 2014

Public Stargazing at SAFRA Jurong - 13 Sept 2014


Weather permitting, there will a free public stargazing session at SAFRA Jurong tonight from 7:45pm. Admission is free. Telescopes will be deployed for stargazing.

For more info, please contact SAFRA Jurong at 6686 4333 or email them at jrclub@safra.sg.

The are located at  333 Boon Lay Way Singapore 649848 (near Boon Lay MRT station):






Saturday, September 6, 2014

Free Stargazing Talk - Binocular Astronomy



The next public stargazing talk is titled "Binocular Astronomy".

Date: Saturday, 6 September 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!

Enjoy looking through the telescope with one eye?

Why not use both of them through a binocular?

In this talk, you will learn how to observe the sky with a pair of binocular and how to choose a pair that is suitable for you if you intend to get one in the future.

Come attend this info-taining multimedia talk and discover these treasures in the sky that looks amazing especially through a pair of binocular. Participants will also be taught how to read a printed sky map which will be distributed during the talk (while stock lasts).

Since it is also Mid-Autumn Festival (aka Mooncake Festival), I will also talk about some interesting lunar facts near the end of the talk.

On the same evening, there is mid-autumn festival celebration just outside Toa Payoh Public Library. There will be a stargazing booth managed by members from Singastro Forum. Weather permitting, do take a look at the stars, moon and planets through these telescopes!

Thursday, July 31, 2014

Free Stargazing Talk - The Summer Triangle


The next public stargazing talk is titled "The Summer Triangle".

Date: Saturday, 2 August 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!

Three bright stars from three constellations form the asterism known as the Summer Triangle. And our Milky Way galaxy cuts right across it! Some of the most spectacular celestial objects will remain "hidden" in these constellations to those who do not know their of their existence, let alone trying to find them in the sky.

So come attend this info-taining multimedia talk and discover these treasures in the sky. Participants will also be taught how to read a printed sky map which will be distributed during the talk (while stock lasts).

Weather permitting, there will be live stargazing during or after the talk at the open grounds just outside the main entrance of Toa Payoh Public Library. Come see the Moon, Mars, Saturn, star clusters. star clouds up close and personal through our telescopes!

Wednesday, July 30, 2014

Singapore Science Festival Sidewalk Astronomy


As tweeted a couple of weeks ago, the Singapore Science Festival for this year is from 18 July to 3 August 2014. This festival is jointly organised by the Agency for Science, Technology & Research (A*STAR) and the Science Centre Singapore.

Various science related activities have been conducted. The most interesting activity to us amateur astronomers will be their Sidewalk Astronomy sessions at various locations in Singapore on the same evening on Friday 1 August 2014.

These live stargazing sessions are of course *weather dependent* as usual.

From the Science Festival official Facebook page, these are the locations:

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(1) SCOB – Science Centre Observatory
15 Science Centre Rd, Singapore 609081

(2) Yew Tee : Outside Yew Tee MRT (Between Yew Tee Square & Yew Tee Shopping Mall)
Venue provider Yew Tee RC Zone 10
61 Choa Chu Kang Drive

(3) Paya Lebar Methodist School (Basketball court at level 3)
298 Lorong Ah Soo, Singapore 536741
Location Map

(4) Christchurch Secondary School
20 Woodlands Drive 17, Singapore 737924

(5) Toa Payoh Public Library
6 Toa Payoh Central, Singapore 319191

(6) Ang Mo Kio Ave 10 Area between Blk 453A & Blk 449

The official contact person of this Sidewalk Astronomy session is Mr Alfred Lim from Science Centre Singapore. His email is alfred_lim@science.edu.sg.

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Work schedule permitting, I may drop by at Toa Payoh Public Library to participate in the activities on that day. Inside the library, they will be various short talks conducted at 7:45pm, 8:10pm and 8:35pm.

Children can also take part in the sundial making activity in the library's activity room.

This is the poster of the event outside the library's Programme Zone:


Weather permitting, live stargazing through telescopes at open grounds just outside the main entrance of the library from 7:45pm to 10pm. This is the same regular spot where we conduct sidewalk astronomy sessions at Toa Payoh Central.



Do follow my tweets for more updated information about Science Festival activities at Toa Payoh Public Library. Wishing all participants having a good time on that day learning more about the oldest science known to human being!

Friday, July 4, 2014

Free Stargazing Talk - Meteor Showers



The next public stargazing talk is titled "Meteor Showers".

Date: Saturday, 5 July 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!


Stars do not shoot around in the Universe! :)

Attend this astronomy talk to find out more about Meteor Showers - what they really are, how and when to observe them.

Weather permitting, there will be live stargazing during or after the talk at the open grounds just outside the main entrance of Toa Payoh Public Library. Come see the Moon, Mars, Saturn, star clusters. star clouds up close and personal through our telescopes!

Feel free to join in the fun with your family and friends. And for soccer fans, you may catch free live screenings of World Cup Quarter-finals at Toa Payoh Central Community Club which is just across the street.

Wednesday, June 25, 2014

Stargazing at Bidadari



There is a big dark field inside Bidadari that is suitable for stargazing and astrophotography.

This is the map of that location (open grounds at right of Upper Serangoon Road):


Since I need to attend an appointment at Potong Pasir in the late afternoon yesterday, decided to recce this site alone for myself for the first time last night. Somehow didn't manage to visit this site earlier even though I stay in Toa Payoh which is relatively near and this site has been mentioned every now and then in singastro astronomy forum over the years.

While checking Potong Pasir map online for my appointment, saw this nearby big green patch. Thought it may be a good location for stargazing without realising/remembering this is the same woodleigh/potong pasir field/bidadari area that was mentioned in this forum and on newspapers. Turns out this may be good thing for me as I could evaluate this place without much bias. More on this later.

Firstly, clear up some potential confusion about the naming (which may have contributed to my not recalling this site). Here are some names used in singastro forum previously by various members, in online maps and newspaper reports:

(1) Cemetery off Upper Serangoon Road
(2) Observation site or open field near Woodleigh MRT
(3) Former Muslim/Christian Cemetery
(4) Field near Potong Pasir
(5) Field near Upper Serangoon Road / Upper Aljunied Road
(6) Bidadari
(7) Bidadari Park
(8) Bidadari New Town

Turns out, they are all referring to the same field/observation site which is the big open field between Potong Pasir MRT and Woodleigh MRT! (5) is probably the most descriptively accurate "name" but is too wordy. To those who stay near that area and nature lovers of Bidadari (especially birders), this may not be confusing. But for the rest of us who are not very familiar with that place, it can be!

So for the sake of common discussion and ease of future forum searching, I suggested we just call this site/field "Bidadari" from this point onward! And if you prefer to shorten it and to call it more affectionately like some birders do, "Bida". :)

By the way, interesting fact I read from Nature Watch (Nature Society Singapore): " "Bidadari" was derived from the Sanskrit word "widyadari"; meaning a nymph or fairy."

Before I begin my brief recce report, some history and credits about Bidadari mentioned in singastro forum.

It was mentioned at least as far back in 2007 by forum members Kay Heem & Hommel in the General Astronomy forum (you won't find this thread if you search for "bidadari" instead of "potong pasir".)

Check out the nice panoraomic photo and annotated google map of Bidadari in Kay Heem's zip attachment.

It was mentioned as recently as last year 2013 by George when he posted about shooting Milky Way and Comet ISON at Bidadari.

In between these posts, several other forum members must have discussed about it too. This is an example which initially started off as a discussion about Dempsey observation site in Coffee Corner.

Those who are interested to find out more about such previous discussions can continue your research by searching "bidadari" in singastro forum.

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Now back to my recce report. Most if not all of these observations may be the same as observed/reported by others who have visited Bidadari earlier:

Big open spaces, no lighting inside the field, low grass level, didn't hear any mosquito or got bitten by any.

Here's a low quality video from my phone:



Nice pavement/track in decent condition for joggers. Occasional pot holes. Should not be a problem for pushing astro gear along it on a trolley. Better than over grass anyway.

Spot where the above video was taken later in the evening.

Saw joggers continue to jog when the sky/field is dark, i.e. 8pm++.

Comparing the google map satellite photos Kay Heem took in 2007 and current ones and from onsite observation, there are fewer trees.

No big glaring lights from the nearby roads and houses especially if you walked closer towards the center of the field.

Facing South. Brighter stars of Centaurus and Crux captured with phone in HDR. Silhouette of jogger in the background. 

The field is like a very gentle hill with the highest point in the center. So if you walked beyond that and further away from the main Upper Serangoon Road, the hill itself can be used to completely shield off some of the distant lights from the street lamps and some far away building lights.

Jupiter (white "star") setting in the west.

Near Potong Pasir MRT and Woodleigh MRT. Overall, the whole field is slightly nearer to Woodleigh MRT. Additional advantage of Woodleigh MRT is you do not have to cross any road if you come out from Exit A. There's a lift and wheelchair friendly slopes near this exit. You may just walk a few meters on grass from there to reach the nearest field track. To the stargazer, this translate to less hassle and time saved to transport your astro gear to the darker areas in the dark field.

Quite a few bus stops near the field. There's one near Woodleigh MRT Exit A.

Woodleigh MRT Exit A

Woodleigh MRT at far left. Bidadari at right.

No temporary shelters. If it rains suddenly, run to nearest MRT/bus stop.

No car parks nearby. According to George, some drivers park their vehicles here temporarily, somewhere between the two MRT stations along Upper Serangoon Road, slightly nearer to Potong Pasir side:



Back to being able to evaluate this place with lesser bias. Since I didn't know it was Bidadari, I did not realise then it was a CEMETERY! For many minutes with no joggers in sight, I was just enjoying the peace, darkness and starry night in the field alone. Every now and then, I will squat down to take some photos with my mobile phone in HDR mode (else all black images as it was too dark and/or phone camera sensor not sensitive enough).

I did not recall seeing or feeling anything unusual or eerie and my photos and videos didn't not capture anything strange too. Just saying how I felt then as a matter of fact, not trying to disprove if eerie things are still present there for those who believe.

So the more "scary" part of this recce to me is to realise now it is *the* Bidadari that will be gone soon! Now I remembered all the news about Bidadari turning into a HDB New Town soon and Nature Society trying to protect as much of it as possible. Also recalled attending this Bidadari New Town exhibition at Toa Payoh Central last year. A quick check with recent news online seems to suggest that the earliest construction work could be as soon as next year 2015.

Here's the official video by HDB regarding the future of Bidadari:



After watching the video, I find it ironic Nature has to be destroyed to build a garden for the community. And destroying the Heritage of the cemetery and important resting place for migratory birds to build a heritage walk to admire the "heritage" of a new concrete jungle? And don't get me started on those three searchlights beaming into the sky! You never know when robbers might parachute into your house at night! :)

Unless we find a super rare one-in-a-billion bird species in Bidadari, this field turning into a New Town is a forgone conclusion.

Growing up as an urban kid, I hear stories from my older friends and relatives about growing up in kampungs (villages) in Singapore. For example, the fun and horror stories of walking back home late night across pitch dark cemeteries after a late night hangout with friends.

Last night, I walked around this field, said hello to joggers and people walking their dogs, stopped every now and then to take a photo and admired the dark starry night sky. For that magical hour or two in the dark and alone, I felt I got a little closer to experiencing what my friends and relatives were always reminiscing about - the good old kampung days where much more stars and Milky Way were still visible in Singapore on a clear night.

So to all stargazers, photographers, joggers, historians and nature lovers, do check out this place at least once before it is all fenced up for construction in a few months!

Wednesday, June 18, 2014

Stargazing tonight outside Courts Toa Payoh


Weather permitting, I will be stargazing at open grounds outside Courts Toa Payoh tonight.

Date: Wed, 18 Jun 2014
Time: From 8:00 PM onwards
Venue: Open grounds outside Courts Toa Payoh  [Google Map] [Street View]

Come see Saturn and stars through telescope(s)! Free and open to public. All are welcomed.

There's a pasar malam going on outside Toa Payoh Public Library. You may enjoy some nice finger food there. :)

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Update 4 July 2014:

This is a brief report and pics of the 18 Jun sidewalk astronomy session at Courts Toa Payoh.

Thanks to all for coming, especially Hong Lian for helping out with his dobsonian telescope. Able to spend more time explaining stuff to a smaller weekday crowd - how to read sky maps, pros and cons of different types of telescopes, ...etc. Good views of Saturn and Jewel Box. Saw Martian ice caps again in the dobs.

Highlight of the evening was encountering 2 police officers on patrol. They had a great time looking through the telescopes and understanding what we are doing. They walked away without even asking us to show any identification.

Thanks to them, some of the residents sitting around there who have been watching us from a short distance couldn't endure their growing curiosity anymore. They came and queued behind the police officers and patiently waited for their turn to take a look through our telescopes. Needless to say, nobody dared to cut the queue!






This is a single shot phone pic of Saturn through my 10-inch dobsonian telescope, slightly enhanced in photoshop. The actual live view at that time was of course way much better than this! One would be able to see very sharp contrasty bands, rings and moons of Saturn nearby!



Friday, June 6, 2014

Free Stargazing Talk - Basic Stargazing Skills


The next public stargazing talk is titled "Basic Stargazing Skills".

Date: Saturday, 7 June 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!


It's a huge pity the general public is not able to appreciate and enjoy stargazing better due to lack of understanding of basic astronomical concepts and observation techniques. Most of these concepts and techniques can be easily acquired with proper explanation in simple language, presentation slides and live demonstrations.

Weather permitting, there will be live stargazing during or after the talk at the open grounds outside the library. Come see Moon, Jupiter, Mars, Saturn, star clusters and nebula (star cloud) through telescopes!

So feel free to join in the fun with your family and friends. It's the June holidays after all!

Saturday, May 24, 2014

New Meteor Shower - Camelopardalids


Update 24 May at 5:20pm : The predicted peak hour is over. But from online feedback, not many meteors seen. So do not have very high hopes of seeing many meteors in Singapore even if the sky is clear.

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Astronomers are predicting that there will be new meteor shower visible today (24 May). Its name is Camelopardalids as the meteors will seem to radiate from the constellation Camelopardalis (aka Giraffe constellation).

Can we see it from Singapore? Answer is YES provided *both* of the following conditions are met:

(1) The sky is clear and dark enough.
(2) Observer is patient enough to keep looking at the northern sky from sunset of Saturday 24 May.



The peak of the meteor is expected to be from 2pm - 4pm Singapore time today (UT+8). So the best location to see it is in countries high up above the equator and experiencing night time during this time period - e.g. North America and Canada.

From Singapore, most of Camelopardalis will be *just below* the horizon from sunset to sunrise. You can find it in free planetarium apps like Sky Map (Android) and Planets (iOS). But just because you cannot see the constellation does not necessary means you will not see any meteors!

Meteors "shoot out" from an apparent radiant point. In this case, shooting out in all directions from the north near horizon across the rest of the sky. Parts of this rest of the sky is still dark and visible from Singapore and that's why it is still possible to see some of them here. Not as much and as long as North America but not totally zero either.

The peak of this activity is from 2pm - 4pm Singapore local time. Meteors do not suddenly disappear from potentially hundreds to zero immediately after the peak hour. No doubt the rate will decrease from peak hour making the possibility of seeing them lower but not totally impossible in the few hours before or after peak hour.

Moreover, meteor peak hour predictions may not be 100% accurate. So it may actually peak earlier or later. The fact that this is a brand new meteor seen for the first time adds to the chance of peak hour prediction errors.

So the strategy to view them in Singapore is to observe at the night closest to this peak hour as possible. That would be tonight 24 May. Especially just shortly after sunset when the sky is dark enough.

As for the best location in Singapore, most probably along Changi Beach facing the north. For those who can't go there, find the next best alternatives:

- Go to dark park with open skies, i.e. away from nearby glaring lights especially from the north.
- Go up high to minimise ground level local light pollution. e.g. sky parks and roof top gardens.

If can't leave your house and have a good enough view of the northern sky, try to switch off all the lights in the house and observe! At least your eyes will be able to dark adapt better then being outdoors with bright lights shining into your eyes.

If you are able to stay awake till Moon rise at about 3:53am you may see something that is quite extraordinary through a telescope - meteor shower visible in the unlit side of the thin crescent Moon! You may see them as sudden but tiny flashes.

For those who are into photography, this may be interesting opportunity to shoot star trails with meteors radiating across them.

Always learn how to manage your expectations when it comes to observing meteor showers:

(1) Camelopardalids is & *predicted* to have a rate of hundreds of meteors per hour. Some even say 1000! Meteor rate predictions is not exact science. So set you expectation low so even if you see a couple over a few hours, you can be quite contented.

(2) All astronomical events are totally dependent on the weather. Plan to spend your Saturday evenings in more enjoyable ways in advance in case the weather is not promising.

(3) If portions of the sky is clear enough and you have access to a telescope or binoculars, whey not observe the stars and the planets while hunting for meteors? Mars, Saturn, Jupiter appear early in the evening and Venus and Moon couple of hours before sunrise.

(4) Make use of the time to catch up with your family and friends. You can still talk to them face to face or or on the phone while staring at the northern sky. Or listen to your favourite music, recorded lecture or audio book which you can't seems to find the time to listen to.

Recommended reading about Camelopardalids:

- http://www.space.com/25982-rare-meteor-shower-camelopardalid-comet-unknowns.html
- http://earthsky.org/tonight/best-times-to-watch-friday-nights-meteor-shower

WEATHER PERMITTING, my friends and I *MAY* be going to Bishan Park to observe this meteor and/or conduct a free public stargazing session tonight. This will most probably be a very last minute decision so stay tuned to my blog, twitter or Singapore Sidewalk Astronomy facebook page.

Wishing for clear skies tonight and good luck meteor hunting! We may the first human species to see this meteor shower for the very first time in history!

Saturday, May 10, 2014

Saturn Opposition 2014


The best time to observe/photograph Saturn this year is this weekend 10/11 May 2014.

Saturn will be in opposition - Saturn, Earth, Sun forming an imaginary straight line with Earth in the middle. Thus, the distance between Earth and Saturn will be short and this means Saturn will look bigger in the same size telescope compared to other days in 2014!

If you miss observing Saturn this weekend, do not worry. It will not suddenly shrink into a very small apparent size overnight. It will very gradually become smaller. So you can continue to observe/photograph it for many more weeks on any clear enough night.

How to find Saturn in Singapore?

(1) Use a free smart phone app - Sky Map (Google Android) or Planets (Apple iOS).

(2) Use the most sophisticated computer in the whole universe - your vision system and brain!

Look at the following illustration of the sky at 8pm facing East (east-southeast to be exact).

Step 1 - Locate Mars and Spice in the sky. They look like a pair of bright "stars" in the sky. Mars look like a red or bright orangy "star". Spica, a white star.

Step 2 - From Mars to Spica, imagine and extend the same distance about 2 times. You should see another bright "star" nearby - Saturn! You can use your fingertips to do this rough estimation of distance.




For those who are curious about how to process and photoshop Saturn from a captured raw video, this is a nice YouTube tutorial by Caleb Piercy:





Weather permitting, my friends and I will be deploying our telescopes for free public viewing at Bishan Park McDonald's. From 7:45pm till late. So come see Saturn (and Moon, Jupiter, Mars too!).

You may bring your Mother along and let her enjoy a very special Mother's Day weekend!

Saturday, May 3, 2014

Free Stargazing Talk - Spectacular Saturn


The next public stargazing talk is titled "Spectacular Saturn".

Date: Saturday, 3 May 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!



Discover the fascinating facts about the Lord of the Rings and learn how to observe it with your own eyes right here in Singapore!

Weather permitting, live stargazing during/after the talk at the open grounds outside the library. Come see Moon, Jupiter, Mars, Saturn, star clusters and nebula (star cloud) through telescopes! Feel free to join in the fun with your family and friends!

Friday, April 4, 2014

Free Stargazing Talk - Magnificent Mars


The next public stargazing talk is titled "Magnificent Mars".

Date:   Saturday, 5 April 2014
Time:   7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!

Credit: Wikipedia

Discover the fascinating facts about the Red Planet and learn how to observe it with your own eyes right here in Singapore!

Weather permitting, live stargazing during/after the talk at the open grounds outside the library. Come see Mars, Jupiter, Saturn, star clusters and nebula (star cloud) through telescopes! Feel free to join in the fun with your family and friends. Looking forward to catch up with astro friends and their latest new toys! :)

After 2 years of presenting these talks on a low performance netbook,  this will be the first time I am using a much faster laptop, i.e. higher definition videos and animations! :)

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Update 14 Apr 2014:

Big thanks to Toa Payoh Public Library for hosting the talk and all who came to attend despite a very discouraging cloudy early evening! Was a little tired after giving a talk at National Junior College the previous evening (totally enjoyed that session too!). But the wonderful response from the library audience kept me awake and feeling alive. And the coffee from Thomas too! :)

Happy to see Mr Chia in the audience. I hope I get my solar facts right! :)

Thanks to James for being so optimistic about the sky when I have already given up a few hours before the talk. The sky turns out to be clear enough to observe Moon, Jupiter and Mars! Too busy setting up and manning the 10" dob and only got to see Moon through James' scope. Very contrasty and the 2-speed focuser is very smooth. As usual, once we start to help the first person to shoot Moon with his/her handphone, the rest of the queue saw and automatically took out theirs and standby. Thank goodness it's a tracking mount. :)

Manage to take a look at Mars through the 10" dob. At about 195x magnification, Syrtis Major was an obvious dark bluish patch. The ice cap was so shiny white! Better than what I saw during last week's Earth Hour sidewalk at Bishan Park because the seeing was better. Magnificent Mars indeed! Didn't have a chance to push the magnification more as the main focus was to let as many people see Mars as comfortably and as long as possible.

Sky was totally clouded from about 10:30pm. By the time the sky was drizzling, we have already packed up and enjoying our nice supper at the nearby McDonald's.

Once again, thanks to all who came especially the stargazing volunteers. Hope to see you all again for Spectacular Saturn!

Some handphone photos of the event:





Saturday, March 29, 2014

Earth Hour Stargazing 2014


Today we celebrate Earth Hour in Singapore. Organisations and individuals that support this movement will switch of their non-essential lightings from 8:30pm - 9:30pm.

The ambassador for this year is Spider-man.



The crew at Astronomy.sg has done a good job compiling all the stargazing related events, you can visit their webpage here --> http://astronomy.sg/earth-hour.

Basically, there are 6 locations celebrating Earth Hour which includes live stargazing session through telescopes and/or binoculars:

- SAFRA Jurong (near Boon Lay)
- Bishan Park (at open grounds in front of McDonald's)
- Kebun Bahru Heights Resident Committee (RC), Ang Mo Kio
- Woodlands Galaxy Community Club
- East Coast Park (near carpark D1)
- Marina Barrage rooftop

Timing wise, they are generally from sunset till at least 9:30pm.

These are great opportunities to stargaze with your friends and family and learn more about amateur astronomy and its related equipment.

Please observe proper stargazing etiquette when participating in such events:

- Do not touch any part of the telescope/binocular setup. You just need to look through the eyepiece which is attached to the telescope.
- Queue orderly and patiently wait for your turn.
- Do not shine bright lights in the observing area

Do take note stargazing events are totally weather dependent. In the event of bad weather, please check with the relevant event organiser for their latest updates.

Wishing all of you clear skies and happy stargazing!

***********************************************

Update 14 April 2014:

No need to go KL and even local my evening work appointment got postponed last minute. So decided to join and help out my astro friends at McDonald's Bishan Park. Too tired and didn't bring any telescope with me.

Disappointing weather in the late afternoon till sunset. Then the sky started clearing up. We had a good crowd looking through the telescopes deployed. Without the surrounding lights being switched off, most people didn't know realised it was Earth Hour. Nonetheless, we had good views of Mars and Jupiter!

We have not been stargazing there for a while. So some of the residents around the area were happy to see us.




Photos of Jupiter and Mars shot with my mobile phone handheld over the eyepiece of telescopes. Average sky conditions:




Friday, March 14, 2014

COSMOS, the wait is over!


33 years later, the wait for an updated and ground-breaking version of COSMOS is finally over!

COSMOS: A Spacetime Odyssey hosted by Dr Neil deGrasse Tyson will premiere in Singapore and Asia tomorrow evening!

Date: 15 March 2014 (Saturday)
Time: 10:00 pm Singapore local time (UT+8)
Channel: National Geographic Channel (StarHub TV Ch 411 and SingTel mio TV Ch 201)
Fox channels (StarHub TV Ch 503 & 507 and SingTel mio TV Ch 310 & 330)



You can watch more promotional videos from the official YouTube channel of National Geographic Channel Singapore.

On the same day 15 March at 8:00am in the morning Singapore time, catch the special 2-hour event "LIVE From Space" live on National Geographic Channel! Interact with astronauts on board International Space Station and Mission Control in Houston, Texas by using the Twitter hashtag #HelloFromEarth.



Still have no idea who is Dr Neil deGrasse Tyson and why you should watch COSMOS: A Spacetime Odyssey? Ok. Ignore the length of the following video and just click play. WARNING: You will not be able to stop watching until it is over. And at 39:11 minutes into the video, question from Singapore!



Anyone interested in winning some COSMOS memorabilia? Watch COSMOS and stay tuned for more information coming soon on this website!

Friday, February 28, 2014

Free stargazing talk - The Southern Constellations



The next public stargazing talk is titled "The Southern Constellations".

Date: Saturday, 1 Mar 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!



Learn about the beautiful constellations in the southern sky and the cosmic "treasures" in them!

Weather permitting, live stargazing during/after the talk. Come see Jupiter, star clusters and nebula (star cloud) through telescopes!

Tuesday, February 18, 2014

COSMOS Q&A at Jurong Regional Library


This is my video of Neil deGrasse Tyson's Q&A session with children at Jurong Regional Library.

Though the event was meant for children, I am very sure many adults will benefit from the wisdom shared and Neil's charismatic presentation style. Especially science educators in Singapore looking for ideas to engage young students. For example, how to explain a seemingly complex subject like parallax error to kids in a fun way.



Now that these videos are completed, can't wait to start blogging about the events of that magical 2 days in February 2014.

Sunday, February 16, 2014

COSMOS Q&A at National University of Singapore


For the rest of 2014, or perhaps for many years to come, nothing will beat what I had experienced last week on 13th and 14th of February.

I will definitely write a long blog (or mulit-part blog) about that experience and insights gained from interacting with Dr Neil deGrasse Tyson and Miss Ann Druyan. This will take sometime as my working schedule seems to get more and more busy as more and more interesting astronomical events are happening since the year started.

So in the meantime, enjoy watching my 46-minute video of the Q&A session conducted at National University of Singapore (Faculty of Science, LT27). Apologies for the camera auto-focusing problems in the first 11 minutes of the video.

For best experience, watch it in fullscreen HD. For those students who skipped class to attend this amazing event (aka pontang), please pray hard your lecturer can't identify you in the last part of the video. :)

Source: http://www.youtube.com/watch?v=g9K-wFnQKYs



Wednesday, February 12, 2014

Dr Neil deGrasse Tyson and Ann Druyan in Singapore!


Dr Neil deGrasse Tyson and Ann Druyan will be visiting Singapore from 13 - 14 Feb 2014 to promote the epic upcoming TV series - COSMOS: A Spacetime Odyssey!! Premiering on 9 March 2014 in US, 15 March in Singapore, this 13-part series will be shown on National Geographic Channel.

Check out the official trailer by Fox:



Have not heard about COSMOS or Neil Tyson? Which exoplanet in which distant galaxy have you been hiding? :)

Watch this recent interview by Bill Moyers and you will be a fan! And join the 1.64 million people that are following him on Twitter @neiltyson!



And since Valentine's Day is this coming Friday, this is a nice video by Milky Way Musings to find out who is Ann Druyan!



Big thanks to the kind invitation by Fox International Channels (Singapore), I am extremely honoured to get a chance to participate in these COSMOS-related events for the next 2 days. Neil and Ann will be attending a press connference, question-and-answer session at National University of Singapore (Faculty of Science) and a light-hearted interaction with children at Jurong Regional Library! Please take note these events are not open to walk-in public.

For the latest news on about these events, please search for the official Twitter hashtag #COSMOSSG. I will be providing event updates via my Twitter account @astrosg.

There will be exclusive autographed photo prints of Neil and Ann to be given away as prizes! So follow my tweets to find out how to win them!

Ok. Now you can continue to Google/YouTube search on these two amazing souls!

Friday, February 7, 2014

Free Stargazing Talk - How to Choose a Telescope and Binocular



The next public stargazing talk is titled "How to Choose a Telescope and Binocular".

Date: Saturday, 8 Feb 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!


Weather permitting, live stargazing during/after the talk. Come see Jupiter, Moon, star clusters and nebula through telescopes! Due to the Chinese New Year celebrations tonight outside the library, we will be deploying our telescope at the open grounds outside Courts Toa Payoh:


View Larger Map

Wednesday, January 29, 2014

Sidewalk Astronomy outside Toa Payoh Central Starbucks - 29 Jan



Weather permitting, we will be conducting a sidewalk astronomy session at Toa Payoh Central tonight.

Date: Wednesday, 29 Jan 2014
Time: From 8:15 PM onwards till late
Venue: Open ground in front of Starbucks (NOT library)[Google Map]

Please take note of the venue. It is outside Starbucks (NOT our usual spot outside the library)! This recently opened Starbucks is located near the Toa Payoh MRT Station (NS19).




Primary focus: Pleiades and Jupiter! We will be deploying our telescopes for free public viewing.
And testing the potential of this new sidewalk location in Toa Payoh.

Check my twitter page for latest updates --> http://www.twitter.com/astrosg

So come join in the fun with or without telescope! Feel free to chat with us about Astronomy!

Thursday, January 16, 2014

In memory of John Dobson


Mr John Lowry Dobson, my hero in amateur astronomy, passed away yesterday at the age of 98.

Here's the announcement from The Sidewalk Astronomers:

"It is with heavy hearts that we must report the passing of John Dobson. He died peacefully this morning, Wednesday, January 15th, in Burbank, California. He was 98 years old. He leaves behind a son, numerous close friends, and fans and admirers worldwide.

On March 8th, in honor of John, this year's ISAN (International Sidewalk Astronomy Night) will be dedicated to his memory. Amateur astronomers around the globe can join in and celebrate John's life and continue to carry the torch that he lit back in 1968 when he co-founded the San Francisco Sidewalk Astronomers."

Who is John Dobson?

In short, one of the greatest promoter of amateur astronomy of our time. He invented a cost-effective way to mount big mirror-based telescope, i.e. the dobsonian mount. You can read up more about him from this wikipedia entry.

You may also search "John Dobson" in YouTube to experience the passion, charisma, humour and humility of this wondeful man.

For now, I will like to share how this great man has influenced me.

Can't remember the exact details but a few years ago during the mid 2000, I watched the documentary A Sidewalk Astronomer. This is a clip of the opening scene from Bullfrog Films on YouTube:



"Come see the Moon! Come see the Moon!" Within a few minutes of watching it, I was hooked. Something just clicked deep inside me. Felt so inspired and I told myself, someday, I must and will do this sidewalk thing! Just like the lady in video clip said, "Wow, I needed this right now!".

When I first watched this documentary, I have seen Moon and a couple of planets through some small to mid-size telescopes. Feeling inspired to do sidewalk astronomy, I wanted to buy a dobsonian telescope as featured in the documentary so that I can share this excitement with the general public. But to my huge surprise, the local pricing of small beginner telescopes were too high for me (and I believe for a lot of others too!), let alone a dobsonian!

To make things worse, real life was getting in the way. I had to place even more emphasis on my family, career and personal life. Gradually, stargazing took a backseat and was totally forgotten for a few years.

Fast forward to 2010, on a casual trip to Johor (West Malaysia) to visit my friend's hometown, I was absolutely stunned by the starry night sky that night! WOW! I suddenly remembered I was into amateur astronomy a few years ago. Fortunately, I was in a slightly better financial situation and thanks to the tremendous growth of internet, more competition and mass production in China, prices of astronomical equipment has dropped quite significantly.

Long story short, I bought my first telescope which was a used one from a local amateur astronomer thanks to the local singastro astronomy forum. It is a 5-inch diameter Maksutov Cassegrain Telescope. What immense joy it is to finally own a telescope and to be able to share those views with your family, friends and the general public! One very clear night, or rather clear early morning, I saw the amazing third quarter Moon. And that's when John Dobson came back into my consciousness as I remembered that was the same view that inspired him to spread the joy of astronomy.

Within a couple of months of owning my first telescope, with some research on a suitable location,  I gathered enough courage to do my first solo sidewalk astronomy session at the open grounds outside Toa Payoh Public Library. As expected, plenty of dirty looks from passerby. But for those who bothered to take a look, they had a great view of Venus (and Jupiter I think). And we had a nice sharing sessions about astronomy and the good old days in Singapore when our Milky Way galaxy was still visible. Before I knew it, I had done sidewalk astronomy for many hours till way past midnight.

The courage to do my first few sidewalks is from my constant reminder of the inspiration from the documentary A Sidewalk Astronomer. Through sidewalk astronomy, I have made many wonderful like-minded friends and together we had so much fun spreading stargazing awareness in Singapore over the past 3 years.

Then there are some friends who doubt sidewalk astronomy is a good idea in Singapore, i.e. the critics and naysayers. Will you be arrested by the police? Will you be robbed? Aren't you afraid of the public dirtying your telescope and optics? How long can you do this? Shouldn't you be more practical and spend more time earning more money? Will the public find it super boring to look at the Moon through a telescope? Surely they must have seen it many times by now?

Again, I drew strength and courage from John Dobson's words and action in the documentary. "Come see the Moon! Come see the Moon!". John did not give up when passer-by walked past and ignored him. For those who are keen to try sidewalk but are fearful or sensitive to public rejection and ridicule, let me quote one of the most inspiring thing John Dobson said in the documentary:

"Those people DO NOT reject us (sidewalk astronomers) for what we are, they reject us for what they SUSPECT that we are. And that is an entirely different thing!"

Three years later, we still have plenty of people queuing up behind our telescope during our sidewalks even if only the Moon was visible. Most of them *still* have not seen Moon through a telescope in their lifetime and those who did, wanted to see it again during its different phases and to relive the wonder that is live stargazing.

Just wanted to say something about the humility of this great man. Most telescope designers and inventors labelled their invention with their own name. John Dobson was not interested to do that. In fact, he kind of hated people calling his invention a Dobsonian. Dobsonian is just amateur astronomers way of crediting and thanking him for his invention which allows large telescopes to be assembled at fraction of the cost to a similarly-sized telescope of other designs. Look at the thousands of dobsonian telescopes sold commercially for the past few decades, John did not bothered to patent his design and get rich from collecting royalties. He truly wanted more (if possible, all) people to see the Universe through an affordable telescope. He lived a frugal life till his very last day yesterday.

So for those of you who have enjoyed looking through our telescopes, John Dobson is THE MAN to thank and be grateful for. Without him, I may still be hiding in some dark corner somewhere in Singapore, enjoying stargazing and hoping no passerby will come and "disturb" me!

Thanks to the support from my friends, one of the biggest highlight of 2013 for me is to finally co-own my very first 10-inch dobsonian telescope bought used from another good friend! This was after looking through some of my friend's bigger dobsonian telescopes at the starry nights in Johor (thanks for the "poison" guys!). After owning and using a few smaller telescopes of various designs for a couple of years, using a bigger dobsonian telescope is such a thrill. It is like falling in love with stargazing all over again!

As a promoter of stargazing, I do NOT recommend beginners to buy a big dobsonian telescope as their first telescope. Like all telescope design, a dobsonian will have its fair share of pros and cons. But if you are mainly into visual astronomy and can live with the disadvantages of owning one, you will always fall in love with a dobsonian telescope someday! :)

Dear John Dobson, it is a pity I will not be able to meet you this lifetime. But I still love you very much and may you rest in peace forever in the Universe you loved so much and dedicated your life to sharing it with the rest of the world!

Weather permitting, in memory of John Dobson, I will conduct a sidewalk astronomy session tonight from 8pm at the open grounds outside Toa Payoh Public Library. No points for guessing which telescope I will be bringing along! :) Jupiter is still very close to Earth for an amazing close-up view of its cloud bands, the great storm circle and its moons. And today is also Full Moon so COME SEE THE MOON!

Saturday, January 11, 2014

Astronomy Booth at Bursary Event



Thanks to National Library Board for the invitation, my friends and I will be running a small astronomy booth tomorrow in a bursary presentation event.

Event: Bishan-Toa Payoh GRC CCCs Bursary Awards Presentation Ceremony 2014
Date: 12 Jan 2014 (Sunday)
Time: 9:00am - 1:00pm
Venue: Open grounds outside Courts Toa Payoh.


View Larger Map

Admission is free. Weather permitting, we will be conducting live Sun-gazing!

Feel free to drop by and chat about astronomy with us!

Saturday, January 4, 2014

Free Stargazing Talk - Astronomical Events in 2014


There is a free public stargazing talk tonight titled "Astronomical Events in 2014".

Date: Saturday, 4 January 2014
Time: 7:30pm - 8:30pm
Venue: Toa Payoh Public Library. Level 1 Programme Zone.

Admission is free. No pre-registration required. Late-comers welcomed!


Learn about all the interesting astronomical events in 2014, including one that is happening on the very same night of this talk! Participants will also learn basic stargazing skills like how to read a star map. A free A3-size printed sky map will be distributed (while stock lasts).

*Weather permitting*, during/after the talk, there will be a live stargazing session at open ground just outside the library. You can observe the Moon, stars and the planets through our telescopes with different size and design! You can also interact with our friendly star volunteers to learn more about astronomy and telescopes.

So spread the word, bring your family and friends along to acquire skills that will enable you to enjoy stargazing for the rest of your life!