Or take a picture of the Moon. This is approx 0.5 degrees across which gives you the scaling factor you need.
________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of Sander Pool Sent: 20 May 2009 14:49 To: [email protected] Subject: Re: [skychart-discussion] Re: Finder circle for DSLR camera[Scanned] Hi Harry, the official way to do step 1 is to plate solve. To be honest that's too involved to explain here. You may want to google for it. A poor man's plate solve is something like this: - take an image - find two stars that are in opposite corners of your image - use CdC to find the names of these stars - use CdC to find the distance between these stars (click on one, then the other, bring up properties window, distance at the bottom) - use a paint program to find the distance in pixels between the stars in your image - do basic math to find your pixel scale - do basic math to find your image size in arc minutes Then enter this size into the Display->Finder rectangle settings dialog. Sander crayonharry wrote: > > > > > > im not sure how to do either ... determine the field of view and also > how to enter it in the program. > [Non-text portions of this message have been removed]
