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RRaubach
AstroCowboy
Reged: 01/26/05
Posts: 2173
Loc: Douglas (Converse County),WY
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Re: Favorite Challenge Objects for dark skies
07/20/08 07:02 PM
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I have observed Pal 7, Pal 8, Pal 9, Pal 11, and Pal 12 in my TMB 203 f/7. On the other hand, I have tried several times for Pal 13 with my 12.5" Discovery, to no avail. Of the previous 5 globulars listed, Pal 12 is by far the most challenging. I only saw it as a hazy spot that "came and went" with AV. I did pick out 3 stars within the cluster with AV about 75% of the time, although there is a question as to whether or not they're cluster members or foreground objects.
Barnard's Galaxy is quite a bit easier than Pal 12, if your skies are clear and dark. I was able to see Barnard's Galaxy in my departed TMB 175. It takes a bit of playing around with magnification to gain the optimal contrast, however.
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Rodger
Meade SN-10 (UHTC) on Tak EM-200 mount/Antares rotating rings. Moonlite focuser.
Parallax 14.5" Newtonian on HD 200 mount (arriving soon!) w/ conical Royce mirror.
TMB 203 f/7 APO refractor on Tak NJP-160 mount.
Discovery 12.5" PDHQ
Schneider 18x80 "Flakfernrohr" binoculars/tripod mounted. Canon 15x50 IS binoculars
Unihedron Sky Quality Meter
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