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NGC 253 (Sculptor Galaxy) | by steschu
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NGC 253 (Sculptor Galaxy)

NGC 253, the Sculptor Galaxy, is the brightest member of the 10 million light-years away Sculptor Galaxy Cluster, which is one of the neighbouring clusters of our own, the Local group. Though at a very low position from northern skies, NGC 253 is always an impressive target.

 

Object: NGC 253, Sculptor Galaxy

Optics: Lacerta Newton 12" F4 + 3" Wynne-Corrector

Mount: Skywatcher EQ8

Camera: ZWO ASI 183MM Pro @-20°C, Gain=53, Offset=10

Filter: ZWO EFW 7x36mm, ZWO 36mm Filters

Exposure: total ~1.6h, R 16x120sec, G 16x120sec, B 17x120sec, L (derived from RGB), 200 Bias, 40 Darks, 40 Flats per channel

Date: 2018-07-15, 2018-07-16, 2018-07-17

Location: ATHOS Centro Astronómico S.L., La Palma

Capture: Sequence Generator Pro

Guiding: Off-Axis, ASI120MM, PHD2

Image Acquisition: Stephan Schurig

Image Processing: Stephan Schurig

AstroPixelProcessor 1.062: Calibration, Registration, Normalization, Integration, Channel Combination, Background Calibration, Star Colors Correction, Auto Digital Development

Photoshop 19.1.5: Curves, Exposure (Exposure, Offset), Masked Nik Dfine 2 Denoise, Masked Dynamic (Dynamic, Saturation), Star Shrink, Masked Nik Output Sharpener

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Taken on July 18, 2018