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M107, Ophiuchus, 6/29/2008, KCMO, 22-inch, 31mmT5, 22T4, 17T4, 22/17 w/2xPM, T:6/S:5 This was a much more challenging object than I had anticipated. I almost gave up on it. I finally spotted it with the 31mm (82.9x). After figuring out precisely where it was, I was able to see it at many magnification levels. It had a grainy appearance in the 31mmT5, and I was able to resolve quite a few stars with the 22T4/2xPM (203x) combo. Maybe as many as two dozen winking in averted. I could not fully resolve the cluster even with the 17T4 & 2xPM (263x). It is a loose GC with minimal central brightening and lots of faint nebulosity. A fine but subtle object.

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Over the years I haven't logged too many entries for this object. My first observation of it was on June 5, 2000 from a dark site with a G9.25. I described it as quite faint and expressed skepticism regarding Stephen O'Meara's value of 7.8 mag for it.

I found a second observation for the cluster, logged during my first observing session with my C11 on July 21, 2001. I described it as loose with some central brightening and 10-12 stars winking in and out of averted vision in a generally grainy patch of nebulosity. I also noted I could see the object in my 50mm finder in averted vision.

I haven't found any log entries for observations of M107 from my backyard. It seems surprising to me that the June 29 observation is the first time I have looked at it in an urban sky, but perhaps it is. I plan to try it with a few smaller scopes to see if it can be seen at all with less aperture from my backyard.

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Fiske Miles
Nikon 8x42 LX / 12x50 SE Binos
Mini Borg 60ED, TV-101, AT80Ach, XT-8, C11/CI-700, 22-Inch Dob
Way too many Nagler eyepieces
http://www.fiskemiles.blogspot.com/
www.fiskemiles.com

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