Re: [APML]: "AstroPhoto" program?

[GeneHays@aol.com]

In a message dated 97-08-18 20:44:30 EDT, Wayne wrote:

<< Another option to the software you are looking for would be a book I have
 found called "Astrophotography" by Barry Gordon. 
 He has created a very unique method of assigning what he calls an "fx value"
 to all deep sky and planetary objects. Based on each object's FX value, he
 has created a chart that quickly and accurately figures the time of exposure
 needed. It will take into account your film speed, f ratio, and filters if
 applicable. I have found this book absolutely indespensible.
 It sells for $19.95 and its available from Wilman-Bell, Inc. (804-320-7016)
  give it a try.
 
 Wayne Cukras
  >>
 
I concur with Wayne's evaluation.   If you can learn to use.......and if you
keep a copy of the main chart handy, good exposure times can be calculated
very quickly.
Gene Hays