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Old 05-06-2007, 09:41 PM
grl570810 (Graham)
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grl570810 is offline
 
Join Date: Dec 2005
Location: Seaforth
Posts: 24
Question Overexposed now????

Guys,

Based on feedback to my first post: http://www.iceinspace.com.au/forum/s...ad.php?t=20843
I tried again last night and the results are unexpectedly ghastly!

The 'best' result I got is attached. This was at native f/10 on the C11 with the ToUcam 740 at 10 fps, shutter 1/50, brightness 40%, gamma 35%, saturation 40% and gain around 20%. The k3ccd brightness meter was pretty much bang on 200. The f/20 results are so grotty I'm not even going to post - probably out-of-focus as I was hurrying to beat a band of cloud coming across.

The seeing was not as good last night as the 2nd, but still: what the **** happened? FWIW I think it's gone too far in the over-exposed direction as even in the raw frames the central portion was just an amorphous white blob. But if that's the case how come getting a 200+ setting in the meter is 'right' for you guys but is 'wrong' for me?

Any ideas at all - unless someone has a suggestion to the contrary I'll try aiming for about 180 next time...

Onward and upward...
G
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