Background extraction Siril AutoBGE, denoise with GraXpert, green noise removal with Siril, platesolving. Stars and nebula separated (with Starnet++) and stretched. Stars only lightly with GHS (Generalized Hyperbolic Stretch), background and nebula with Veralux HyperMetric Stretch and lightly with GHS. Then star recomposition with Siril.
1 Comment
Target: NGC7023 (Iris Nebula)
Total integration: 3 hours 44 minutes
Exposure: 224 x 60 sec.
Camera: SvBony Sv405cc (IMX294)
Telescope: SvBony 550 80ED (80/480 Apo f/6)
Filter: SVBony UV/IR Cut Filter
Mount: EXOS-2 (with onStep Kit)
Control: Raspberry Pi 5
Guiding: no
Focuser: Gemini autofocuser
Calibration frames: darks, flats, darkflats
Software: EKOS / Kstars, PHD2, Siril 1.4.3
Background extraction Siril AutoBGE, denoise with GraXpert, green noise removal with Siril, platesolving. Stars and nebula separated (with Starnet++) and stretched. Stars only lightly with GHS (Generalized Hyperbolic Stretch), background and nebula with Veralux HyperMetric Stretch and lightly with GHS. Then star recomposition with Siril.