Re: AP900 handles a wind storm

Ken Sablinsky

Thanks!  I love the ~1100mm focal length image scale/fov, and the slower focal ratio doesn't hurt at all with these CMOS cams that take such short exposures.  Do I wish I had an f/6 version also?  Sure! But I won't trade this f/8.35 away for anything.  Years ago with my old SBIG ST-8 and a narrow H-A filter, I'd have to shoot 15-20 minute subs, but since the mount tracked so well, who cared!

5 minute subs with a 5nm HA filter is as long an exposure as I've probably needed:


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