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Reged: 11/22/05
Posts: 109
Loc: Finland
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Re: Favorite Challenge Objects for dark skies
07/22/08 11:21 PM
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From dark skies, low surface objects will be a worthy challenge.
NGC 6822 is visible even with binoculars. Brighter Palomars with large binoculars as well as small refractors. It is more about the conditions than it is about the size of the telescope. Jones 1 is no longer a challenge in my books - it is visible as long as you have a nebula filter (O-III worked for me).
Good ones here are NGC 4236 and UGC 10822 that Dave suggested, as well as IC 1613. IC 1296 might work too.
And for example, G1 in M31 is rated at 13.7 magnitude, being visible at least with a 4" telescope. G73 and G76 should be visible with a 10" scope as well, probably more.
/Jake
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Jaakko Saloranta - Some basic sketches.../
8" Orion DSE
4" Sky-Watcher
3" Konus RFT
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