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Old 05-11-2021, 07:30 PM
Startrek (Martin)
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Startrek is offline
 
Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,703
A Quick Tarantula

After capturing NGC 247 the other night , the Tarantula had just cleared my rear roof line so gave it a go as I hadn’t imaged this object in Sydney for 2 years. I only had an hour or so before a massive council tree would eventually obstruct it. Down at my Obs on the South Coast I have an clear view to the NSEW from 25 degrees to zenith

Managed to capture about 45 minutes of usable data ( 15 x 3 minute subs ) with neighbours lights blasting my yard again ( For the life of me I don’t know why folk have their backyards lit up like downtown Las Vegas and no one is out there )

6” f6 Bintel GSO newt
Skywatcher EQ6-R mount
ZWOASI2600MC set in Ascom to highest dynamic range Gain 0 , cooled to -10C
Optolong L Extreme filter
15 x 3 min dithered guided subs
30 x Flats
30 x Bias
Tracking and Goto EQMOD and Ascom Stellarium
Captured in APT
PHD2 Multistar guiding ( 0.62 to 0.70 arc sec error total )
Stacked in DSS
Processed in Startools V1.7 Compose Bi Colour OSC Linear data set

Due to the small amount of data I had to use quite a few methods / modules to mitigate the noise

RGB ratio CIELab version
SHO version

Comments welcome
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