Thread: vela SNR with Houghys cooled DSLR
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Old 05-05-2007, 02:18 PM
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avandonk
avandonk

avandonk is offline 		 
Join Date: Aug 2005
Location: Melbourne
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Scott I have found that a flat taken with an LPR filter (same optics) works fine for the Halpha. A flat taken with the Halpha seems to have as you say central brightening.

Bert
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