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If you have astronomical imaging of the sky with celestial coordinates you do not know—or do not trust—then Astrometry.net is for you. Input an image and we'll give you back astrometric calibration meta-data, plus lists of known objects falling inside the field of view.
We have built this astrometric calibration service to create correct...
Clear Sky Charts
Based on a numerical weather model, Clear Sky Charts are perhaps the most accurate and the most usable forecasters of astronomical observing conditions for over 6300 observatories and observing sites in North America.
Light Pollution Map
A color-coded map of the world showing sources and levels of light pollution (man-made...
The Texas Chapter of the International Dark-Sky Association seeks to protect the “Stars at Night” that are “big and bright …. deep in the heart of Texas.” That heritage of star-filled night skies has been taken away from us in many parts of our great state. Our members are a volunteer educational group working to engage citizens and public...
www.lightpollutionmap.info is a mapping application that displays light pollution related content over Microsoft Bing base layers (road and hybrid Bing maps). The primary use was to show VIIRS/DMSP data in a friendly manner, but over the many years it received also some other interesting light pollution related content like SQM/SQC...
The Evening Sky Map
The Evening Sky Map (PDF) is a 2-page monthly guide to the night sky suitable for all sky watchers including newcomers to Astronomy.
Designed to print clearly on all printers, The Evening Sky Map is ready-to-use and will help you to:
Identify planets, stars and major constellations
Find sparkling star clusters, wispy...
Welcome to Astro What?, a forum for those interested in astronomy and astrophotography. Our community is welcoming of all abilities, from beginners, right through to very experienced. We hope you find your visit here enjoyable. Please note: you will generally find specific topics in our general area using 'prefixes' instead of having numerous areas for discussion.