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Old 06-09-2016, 07:07 PM
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luka
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Join Date: Apr 2007
Location: Perth, Australia
Posts: 1,164
M20 Trifid Nebula and M21 Open Cluster

IR modded, cold-finger cooled (to 2C) Canon 450D on ED80 (with Hotech flattener)
EQ5 with custom-built belt drive
Orion luminance filter + Astronomik CLS filter
Location = few km from CBD

lights = 18 x 3min (54min total)
darks, flats and bias
Stacked in DSS and processed in StarTools

Unfortunately the clouds prevented my plans of few hours exposure.

I cracked my Baader UV/IR cut filter so I used the Orion luminance filter instead (thank you DJScotty), sticky-taped to the flattener
It worked great to stop blooming around stars.

Thanks for looking
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