Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!usc!zaphod.mps.ohio-state.edu!ncar!midway!ellis.uchicago.edu!lrm3 From: lrm3@ellis.uchicago.edu (Lawrence Reed Miller) Newsgroups: comp.sys.mac.apps Subject: Re: Star mapping program for the Mac available? Message-ID: <1990Aug15.191050.28796@midway.uchicago.edu> Date: 15 Aug 90 19:10:50 GMT References: <35810@ut-emx.UUCP> <2091@wn1.sci.kun.nl> <442@fbihh.UUCP> Sender: news@midway.uchicago.edu (News Administrator) Distribution: comp Organization: University of Chicago Lines: 22 Unfortunately, he Guide Star Catalogue is not generally useful as a star atlas. While it does contain over 18 million stars and galaxies, they are all below magnitude 7, which makes it the largest collection of uninteresting objects ever compiled! None of the stars in the catalog are visible to the naked eye. Neat stuff like Vega, Messier objects, planets, etc are not included in the catalog. The display software included with the program, while useful for planning out observations with the Hubble Space Telescope, does not produce displays that are very useful for finding things for a small telescope (I have not seen any information on display software other than the "Pickles" program which is shipped with the disk. If anyone knows of any other programs for viewing the Catalog, I would love to hear about it!). While there are certain applications for which the Catalog is useful, I have not found it particularly handy for "normal" amateur astronomy. Software which could read data off of the GSC disks and display it along with a database of "interesting" objects would be really ideal, but I don't think anything can do this yet. Still, it is fun to have the precise positions and magnitudes of 18 million objects lying around on your desk. The fun thing is that, at $55, its only about $0.0003 per object!!! :^) However, of you are looking for a catalog, I would look elsewhere. Lawrence Miller