Guide Star Catalog
Catalog of stars / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Guide Star Catalog?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
The Guide Star Catalog (GSC), also known as the Hubble Space Telescope, Guide Catalog (HSTGC), is a star catalog compiled to support the Hubble Space Telescope with targeting off-axis stars. GSC-I contained approximately 20,000,000 stars with apparent magnitudes of 6 to 15. GSC-II contains 945,592,683 stars out to magnitude 21. As far as possible, binary stars and non-stellar objects have been excluded or flagged as not meeting the requirements of Fine Guidance Sensors. This is the first full sky star catalog created specifically for navigation in outer space.[1]
Quick Facts Alternative names ...
Alternative names | Hubble Space Telescope, Guide Catalog |
---|---|
Related media on Commons | |
Close