NGC 1365 Great Barred Spiral Galaxy ( Re Processed)
Starved of clear nights for a month , Friday night in Sydney presented a clear night with a 70% waning moon. Seeing wasn’t too good so picked an east broadband target ( only joking ) NGC 1365 a magnitude 10 Galaxy under Bortle 7/8 skies.At my image scale and FOV this Galaxy is tiny at 4 x 3 arc mins
Finished imaging at 3.30am
6” f6 GSO Bintel Newt
Skywatcher EQ6-R pro mount
ZWO2600MC cooled to -10C Gain 100
No filters
TS Optics GPU coma corrector
189 x 60 sec subs ( dithered every 3rd sub )
40 x Flats
60 x Bias
PHD2 Multistar guiding ( poor guiding at 0.70 to 0.80 total rms )
EQMOD, Stellarium, APT
Stacked in DSS
Processed in Startools V1.8 OSC linear data set
The LP and Moon gradient was ridiculous ( first initial stretch to inspect the data was almost a “white out” ( see attached photo )
Wrestled with processing to try and dampen and remove the noise without sacrificing to much detail
Initial Stetched image showing gradients
Final cropped processed image left in Synthetic Luminance ( I tried to process the chrominance or colour but the noise grain left red mottle throughout the arms so left it in Synth Lum
Comments welcome
Thanks
Last edited by Startrek; 21-10-2022 at 03:51 PM.
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