NGC 6559 Chinese Dragon Nebula in HOO (Martin Dowd)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: IC 1274 · IC 4684 · IC 4685 · NGC 6559

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NGC 6559 Chinese Dragon Nebula in HOO

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NGC 6559 Chinese Dragon Nebula in HOO

The nights have been cloudy for 2 weeks since returning from a trip so decided to reprocess NGC 6559 which was captured back in September and posted as an SHO version.
This time I processed a Bi colour HOO version which ended up having a higher noise floor to work with due to my noisy Oiii data. Capturing Oiii data under B8 skies and a moon around is not pretty , faint signal and lots of noise.
Anyway pushed the detail as far as I wanted to whilst balancing the fine noise grain.
Happy with the detail and contrast through the central core region

Same deal ……
B8 skies
Conditions poor to average ( some high cloud around )
Moon around
8”f5 Carbon Newt
EQ6-R pro mount
ZWO 2600MM with Antlia 3nm filters
3 minute dithered subs Gain 100 , -10C
12 hours of integration
Flats , Darks , Flat Darks
EQMOD , Stellarium, APT, PHD2
ASTAP
Startools V1.8 via Compose , Colour HOO preset with tweaks

Thanks for looking

Comments welcome

Martin

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