[Updated image]
Has been quite a while since I last imaged this large, beautiful spiral galaxy in the southern constellation of Sculptor, NGC 253 known as the Silver Dollar Galaxy, Silber Coin Galaxy, or just Sculptor Galaxy.
A lot of H-alpha data has been used, thus the rendition is different from the DSLR attempts back in 2016.
More Details at Astrobin.
IAS – Internationale Amateursternwarte e.V. – Hakos Observatory, Namibia
IAS remote telescope “Dieter”
Lacerta 12″ Newton f/4, ASA DDM85XL-A, QHY268M, Baader LRGB Ha 6.5 nm filters
Guiding with OAG and Lodestar X2
167x L, 49x R, 50x G, 45x B 120s, 106x Ha 180s, mode 1, gain 56, offset 10, -5C, 20 flats, 30 darks, 50 bias
Total time: 56400s / 15h40
Data acquisition: IAS remote team / Martin Junius
Data calibration/integration: PixInsight WBPP
Image processing: PixInsight, BlurXTerminator, NoiseXTerminator, StarXTerminator, Lightroom
Previous attempt from 2016, reworked for the DSLR AIP group‘s challenge C048:
