Star.exe help

["John Phillips" <jdp@indy.net>]

I can sense the excitement in the group as Tom's gets ever closer to making the Mark IV work.  I am anxious to see the data from these first shots.

 

Please, have mercy on a beginner, as he changes the subject back to something you all learned long ago!

 

I have been working with Star.exe and have been able to successfully process all of the images from the 'archive of early images' page.  I then used my skymap program to create a fts file of stars near the equator.  When I ran Star.exe on this file, it didn't find any stars at all.  It seems that the 'sky' didn't have any noise in it, so the routines using sigma didn't work.  I wrote a little program to add gausian noise to each pixel.  Now Star.exe can find all of the stars in the image, but can only find the x,y coordinates of the stars.  I get the dreaded 'match to catalog failed' comment in the generated file.  I think I have the CTYPEn, CRPIXn, CDELTn, and CROTAn keywords set up properly to point Star.exe to the right portion of the sky.  At least the generated RA and DEC are very nearly right for these stars.  Still, I would get a warm fuzzy feeling if I could make the match work.

 

Does anyone have any clues to what may be going wrong?  Any comments are welcome.

 

Thanks,

 

John Phillips

jdp@indy.net

 

smime.p7s