ASTRONOMY TOOLS BY JUSTIN NG (BETA)

A collection of astronomy tools developed by astrophotographer for astrophotographers. The dates and times here are given in SGT and the data are computed based on the assumption that you're observing from Singapore. If you are observing from other locations, download our mobile app or click here to use the web-based astronomy tool instead, which can only be accessed on mobile devices. You will need to login with Facebook to use the tool and if you're concerned about the security issues, click here or read our privacy policy.


NEW: STAR CHART FOR SINGAPORE (REAL-TIME)

Identify and locate stars, constellations, planets, galaxies, Milky Way, radiant points of meteor showers and learn more about the night sky in Singapore with the star chart. Move your mouse over the star chart, click on the chart and press the "?" key to see the full list of keyboard controls.

The star chart on the left is configured to show you how the skies will look like in Singapore based on the current date and time (SGT). The ecliptic (also known as the zodiac) line , in red, is an imaginary line on the sky that marks the annual path of the sun. The outline of the Milky Way is shown in cyan color and the radiant point of a meteor shower is shown in green color. The Galactic Center of the Milky Way is located in the direction of Sagittarius and Scorpius constellations.

If you are not based in Singapore, click here to obtain the star chart for your current location or click here for larger view.

Resources:

How to read a star chart? [VIDEO] 

NEW: CLOUD COVER MAP (UPDATED EVERY 30 MINUTES)

A good seeing is essential for high resolution imaging and knowing when is the best time to visit a location will increase your chances of executing a successful imaging session. The cloud cover map on the right is made up of hundreds of tiny boxes and each box contains a number, 100 being most cloudy, that indicates the cloud cover for that particular coordinate.

A cloud on the map that is very white, is very high and cold since temperature tends to decrease with height in the upper troposphere. It can be difficult to distinguish the clouds from the land if the temperature of the clouds is very close to the land temperature. Clouds that are not bright white are usually low and mid-level clouds and clouds that are very low may go undetected. Chances of thunderstorms are high if the clouds are bright white on the map.

This cloud cover map is updated every 30 minutes and you may click on the map or click here to view larger.

NEW: ENHANCED FALSE-COLOR CLOUD COVER MAP (UPDATED EVERY 30 MINUTES)

Discover developing thunderstorms more accurately with our enhanced cloud cover map, which animates past 6-hour images, 30 minutes apart, to keep you abreast of the weather conditions.

Chance of drizzle or rain is 60% when the cloud top color is green and chance of heavy rain or thunderstorm is above 80% when the cloud top color change from red to bright white. This is applicable when you're viewing the enhanced map during the day.

After sunset, the false-color data will not be applied and when a cloud top appears to be bright white at night on the enhanced cloud cover map, it means that the cloud is high and cold.

NEW: CLOUD COVER GRAPH FOR SINGAPORE (UPDATED EVERY 30 MINUTES)

Detect the slightest change in sky condition and receive early indications on impending thunderstorms with our cloud cover graph that displays the change in sky condition for the past 12 hours in Singapore. Other countries are only available to paid subscribers.

Ascending line graph indicates incoming clouds and possible thunderstorms if the clouds are bright white on Cloud Cover Map. If the gradient is steep, it means the sky conditions are changing quickly.

Generally the sky condition is not too bad if the land cloud cover average line (in green color) falls below 20% and chance of rain is high if it's above 80%. You will see an almost clear horizon if the sea cloud cover average line (in blue color) falls below 10%. The graph is updated every hour and you may click on the graph or click here to view larger.

 

CALENDAR OF ASTRONOMICAL EVENTS (MONTHLY)

Plan ahead to witness and capture the essence of important celestial events with our astronomy calendar, which includes phases of moon, conjunctions, eclipses and meteor showers. All the dates and times here are given in SGT and so, you might need to convert to your local time if you're not observing the astronomical events from Singapore. Most of the celestial events can be observed with your naked eye.

TONIGHT'S BEST DEEP SKY OBJECTS FROM SINGAPORE (REAL-TIME)

Flaunt your astrophotography skills or put your skills into test by attempting to image the jewels of our night sky. Deep sky objects that are at least 40° above horizon after astronomical twilight are listed here in real-time and data are computed, without taking magnetic declination into consideration, based on SGT. Click here if you're not observing from Singapore.

To locate the celestial object, use your compass to find its azimuth and measure its altitude from horizon using your hands.

Resources:
How to measure the sky with your hands?


FULL FEATURES LIST

  • Time and direction of sunrise, sunset, moonrise and moonset
  • Phases of moon and % illumination daily and monthly
  • Rise, meridian and set times of Milky Way's Galactic Center
  • Current location and direction of Milky Way's Galactic Center
  • Calculate total visibility of Milky Way's Galactic Center
  • Milky Way statistics for the month
  • Automatic detection of location and timezone if GPS is enabled
  • Calendar of astronomical events on a monthly basis
  • Times of astronomical, nautical and civil twilight
  • Rise, meridian and set times of meteor showers

 

  • Current location and direction of meteor shower's radiant point
  • Calculate total visibility of meteor shower's radiant point
  • Moon phase and % illumination during meteor shower's peak
  • Display azimuths/bearings relative to magnetic north
  • Real-time cloud cover map and graph updated every 30 minutes
  • Animate up to past 24 hours of cloud cover map
  • Enhanced false-color cloud cover map updated every 30 minutes
  • List of visible deep sky objects on a daily basis
  • Generate star chart for any date, time and location

  • Graphical display on a wide selection of map types
  • Monitor and animate up to 12 different satellite data
  • Highly optimized for slow network
  • Monitor solar and aurora activities
  • Obtain weather conditions and forecasts via SMS
  • Discover dark locations with Dark Sky Finder
  • Real-time cloud cover global map updated every 30 mins
  • Receive alerts on impending thunderstorms
  • Global cloud cover data from 2013 onwards
  • Cloud cover prediction up to 6 hours in advance

Note: Features marked with star are unavailable to public.