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Old 04-09-2019, 09:40 PM
JA
.....

JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 1,482
Hello Martin,
If you want to get an idea of the sort of improvement that hopefully you've made, then take say a 5minute dark frame WITH and WITHOUT the fan operating and compare the two.

Best
JA
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