Image Description and Details : IC 1795 (Fish head), is a diffuse nebula identifiable in the constellation of Cassiopeia, towards the border with the Giraffe. It is part of an extensive nebular complex that is the site of very active star formation which includes the areas W4 (Heart Nebula) and W3 (IC 1795 and NGC 896).
For the acquisition of the signal, very narrow band filters (3nm) were used in order to create the Hubble palette which associates HII, OIII and SII to the G, B and R channels.
A total of 21 hours of exposure were required, carried out in the Valle degli Ulivi (Taranto-Italy) at 80m a.s.l.
Technical data
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Sky: SQM 20,45
Lights: 83x300s Ha(3nm) + 80x300s OIII(3nm), 88x300s SII(3nm)
Telescope: Skywatcher Quattro 250P + GPU Coma corrector
Camera: QHY 294M Pro
Mount: Sky-Watcher AZ-EQ6 GT
Filters: Optolong SHO 3nm
Processing: DeepSkyStacker, Photoshop CC, PixInsight

Copyright: Tommaso Massimo Stella