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(IAAC) Obj: Alpha sco/ M4 - Inst: 4" Off Axis Dobsonian f10
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Observation Poster: Shane Sweeney <shane_sweeney@hotmail.com>
Observer: Shane Sweeney
Your skills: Intermediate (some years)
Date/time of observation: 05/25/2003 0600UT
Location of site: Tahlequah, OK, USA (Lat 35 9', Elev 250M)
Site classification: Rural
Sky darkness: 8 <1-10 Scale (10 best)>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 4" Off Axis Dobsonian f10
Magnification: 79,125,255
Filter(s): None
Object(s): Alpha sco/ M4
Category: Multiple star.
Class:
Constellation: Sco
Data: mag size
Position: RA : DEC :
Description:
I have yet to split Antares!! I thought I had something but couldn't tell at 255x a little dot now and agian. I have a little bit of dust on my primary and at 255x I get little arcs around the airy disc out to about 3" on really bright stars. M4 looked agreat at 29x and was very mottled at 79x, many stars resolved all across ellipse at 129x with averted vision. 255x was very dark and started to look like a very very tight open cluster with a bit of background haze.
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