Re: [APML] Sky fog

[Aplanatic@aol.com]

Hi Tom:

>On my typical photometric runs I take 200+ 
>images per night with my C11/CB245 at 2950mm 
>focal length.  I have a pretty good handle 
>on my CCD's gain/conversion values from bench 
>testing, and its QE is pretty well known too.  
>Would it be valuable for me to send you 
>night-to-night measurements of my sky background?

Do you have an ST-4?  If so, then a direct measurement of the sky background using your CB245 correlated with an ST-4 measurement would indeed be most helpful.  Thanks.

Dave Rowe


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