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M20 Trifid Nebula

Posted: Mon May 30, 2022 10:51 am
by Startrek
Captured M20 Trifid Nebula last night under Southern Hemisphere City suburban skies
Haven’t imaged this object for at least 18 months
A fair amount of gradient to deal with but managed to clean up the image at the expense of some fine detail

No moon around
Bortle 8 skies
6” f6 GSO Newt
Skywatcher EQ6-R mount
ZWOASI2600MC cooled to -10C , Gain 100 LRN
TS GPU coma corrector
No filter
52 x 90sec dithered guided subs
40 x Flats
50 x Bias
EQMOD, Stellarium and APT
PHD2 Multistar guiding ( 0.60 arc sec total)
Stacked in DSS
Processed in Startools V1.7 OSC linear data set

Comments welcome