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Old 22-09-2022, 05:30 PM
Startrek (Martin)
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Join Date: Dec 2017
Location: Sydney and South Coast NSW
Posts: 6,699
NGC 55 String of Pearls Galaxy under Sydney Skies

It was great to see some consecutive clear nights in Sydney last weekend without the moon around.Captured NGC 55 for the first time in Sydney under Bortle 7/8 Skies ( I’ve captured this Galaxy many times before but down south under dark skies )

6” f6 Bintel GSO newt
Skywatcher EQ6-R pro mount
ZWO 2600MC cooled to -10C Gain 100
Protective window is an Internal UV/ IR cut filter
185 x 90 sec dithered guided subs ( over 2 nights )
40 x Flats
60 x Bias
PHD2 Multistar guiding ( 0.55 to 0.65 arc sec total )
EQMOD, Stellarium, APT
Stacked in DSS
Processed in Startools V1.8 OSC linear data set

As expected loads and loads of LP noise gradient to deal with even with shortish subs.With a few hours of processing I managed to scrap together some sort of an image

Original frame version
Crop version

Comments most welcome

Thanks

Martin
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