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(IAAC) Obj: IC 10 (Dwarf Galaxy) - Inst: 13" f/5.6
Observer: Steve Coe
Your skill: Intermediate
Date and UT of observation: Unknown
Location & latitude: 100 miles from Phoenix, AZ, USA
Site classification: rural
Transparency: 9/10 (10 highest)
Seeing : 7/10 (10 highest)
Moon up (phase?): No
Instrument: 13" f/5.6 (Dobson?)
Magnification: 100x
Filters used: None
Object: IC10
Category: dwarf irregular galaxy in local group
Constellation: Cassiopeia
Object data: mag 10.3, size 5.1' X 4.3'
RA/DE: RA 00 20.4' Dec 59 18'
Description:
Nick, et al,
I picked out IC 10 from a dark Arizona site with my 13" f/5.6 but it
was tough. I said it was: extremely faint, pretty large,
elongated 2X1 in PA 90 with a somewhat brighter middle. At 100X
it grows with averted vision. It is in a very rich starfield
and there is an 11th mag star on the western tip of the galaxy.
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That was on a night I rated 7/10 for seeing and 9/10 for
transparency at a site that is 100 miles from Phoenix, AZ.
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Save this low surface brightness galaxy for a really transparent
night and be dark adapted.
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Clear Skies,
Steve Coe