Guide_Star_Catalog
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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 exc
* Calculated from Wikipedia data.
Accuracy is not guaranteed.
| Alternative names | Hubble Space Telescope, Guide Catalog |
|---|---|
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