AC 2015 Photos are out!

The Day 1 and Day 2 photos have been uploaded to our Facebook Page

AstroChallenge 2015 Results, Questions and Solutions

As promised, the AstroChallenge questions and solutions have been released. As usual practice, the top 50% scores for each round have also been released. All this can be downloaded under the tab ‘More Information On AstroChallenge

Photos of AstroChallenge 2015 will be uploaded at a later date directly to our Facebook Page. Stay tuned!

PS: Should any schools wish to enquire about their scores, please contact us directly at, or our Head Quizmaster at more<dot>options<d0t>exist<at>gmail<d0t>com

AstroChallenge 2015 Champions!

After the AstroChallenge 2015 Finals held at LT27, Faculty of Science, National University of Singapore, the champions of this year’s AstroChallenge for both the Senior and Junior Category have emerged!

For the Junior Category

Best Astronomer: Lee Vint Ve, Raffles Institution

Best Project: Bukit Panjang Government High, Team 2

2nd Runner Up: NUS High, Team 1

1st Runner Up: Bukit Panjang Government High, Team 1

Junior Champions: Raffles Institution, Team 1


For the Senior Category

Best Astronomer: Keven Loo, Hwa Chong Institution

Best Project: Raffles Institution, Team 1

Best Observation Team: Raffles Institution

Best Newcomer: Ngee Ann Polytechnic

2nd Runner Up: Victoria Junior College, Team 3

1st Runner Up: Hwa Chong Institution, Team 1

Senior Champions: Raffles Institution, Team 1

Congratulations to Raffles Institution in claiming the challenge trophies for both the Senior and Junior Category this year!

We hope that it has been a memorable and educational experience for everyone who had embarked on the journey with us in both Day 1 and Day 2.

Once again, congratulations to everyone and we hope to see you again next year!

AC Project Round Brief

As promised, the AC Project Round Brief can be found here.

Note for Senior Observation Round Teams

All schools participating in the Senior Observation Round will have to inform the Quizmasters of the following details on Day 1:

  • Names of the participants in the Observation Round
  • Telescope/Mount used (if different from registration)
  • All reference materials that will be used during the Observation Round (to be submitted for review)
  • Any other materials/equipment that will be used during the Observation Round

The deadline for this declaration will be 1330 hours on Day 1 (before the start of the DRQ Round). All non-electronic reference materials will be submitted for review during declaration. Electronic reference materials (e.g. Stellarium on laptops) do NOT need to be submitted for review, but they need to be declared to the Quizmasters.

Approved reference materials will be returned during the Observation Round. Non-approved references will only be returned after the Observation Round ends.

Finally, as the Observation Round is meant to mimic an actual observation session, teams are encouraged to bring items that are typically used in observation sessions (e.g. red torch lights, trash bags/rain covers in case of wet weather, mats etc.)

AC 2015 Information Letter is OUT!

Dear Participants,

The AC Information Letter (and associated information about the Project Round) may be found here. Do note that the registration deadline has been extended by 1 week (to 23rd May), and the Observation Round has undergone a major revamp this year. For more information about the Observation Round, please read our briefing here.

Should you have any queries, you may contact us via email, or our Facebook Page.

An Invitation to AstroChallenge 2015

Dear all,

We are pleased to invite you to take part in AstroChallenge 2015, Singapore’s largest astronomy competition! Prospective participants may view the Invitation Letter and peruse past papers here.

To aid preparation, we have also included a set of guidelines about the content of AstroChallenge, as well as the full syllabus. Should you have any enquiries, please email us at

PS: For future updates, do like our new Facebook page!

Photos for AC 2014

Photos for both AC 2014 Day 1 and Day 2 have been uploaded.

We hope you all enjoyed your time in AC 2014. All the best and hope to see you again next year!

Results and Answers for AC 2014!

Congratulations to all AstroChallenge participants and award winners!
The results of AstroChallenge 2014 are as follows:
Junior category
Champion – NUS High School Team 1
1st Runner-Up – Raffles Institution Team 1
2nd Runner-Up – National Junior College Team 1
Best Astronomer – Lee Vint Ve, Raffles Institution
Best Project – Raffles Girls School Team 1
Senior category
Champion – NUS High School Team 1
1st Runner-Up – Raffles Institution Team 1
2nd Runner-Up – Victoria Junior College Team 1
Best Astronomer – Wang Fan Francis, NUS High School
Best Project – Raffles Institution Team 1
Best Observation – NUS High School
The AstroChallenge 2014 Committee, would like to express our gratitude to our Guest of Honor, Prof. Leek Meng Lee and our judges, Mr. Soh Rong’en , Ms. Anne An Nguyen and Mr. Lim Kia Yee for their precious time with us. We would also like to thank our event’s sponsor, Star Optics Singapore, for their invaluable support.
Most importantly, we will like to thank all participants for making this event a success. We hope to see you  again in AstroChallenge 2015!
PS: Questions and Answers for AC 2014 have been uploaded under the “More Information” tab. Photos will be uploaded shortly.

AstroChallenge 2014 Formula Book

The new AstroChallenge Formula Book has been uploaded here. Participants are advised to familiarise themselves with the Formula Book before the competition. All materials (including this Formula Book) can be found under the ‘More Information On AstroChallenge’ tab.

Organised By

Supported By

Sponsored by