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Old 16-06-2007, 10:25 AM
Rob_K
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Rob_K is offline
 
Join Date: Oct 2006
Location: Bright, Vic, Australia
Posts: 2,165
Nice dark skies tonight, Fri 16 June, but seeing poor - lots of star twinkle even at zenith. Flushed with my recent 'success' as outlined above, decided to flush out a few more dim globular clusters with the Tasco (114x900 reflector on Alt/Az mount, using 21mm Celestron X-Cel eyepiece). Saw these:

NGC6366 in Ophiuchus: Very very dim, amorphous largish glow in averted vision, Mag 10.0;
NGC6426 in Ophiuchus: Extremely dim, small glow in averted vision. Appeared round. Popped in and out of vision, and no wonder at mag 11.2, the dimmest glob I have yet seen;
NGC4147 in Coma Berenices: Easy to see – tiny bright fuzzy glow, starlike. Mag 10.3.

Had a quick go at NGC6717 in Sagittarius (mag 8.4 but said to be challenging even in a large scope because of the obscuring starfield) and NGC6256 in Scorpius (mag 11.3), but no go - need to do more work on these to pin down their precise positions in relation to surrounding stars. When you're working with limited aperture on dimmies, you need to know you are staring at the exact spot because there are bits of nebulosity all over the place!

Cheers -
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