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

Image Description and Details : The Fish head Nebula (IC1795) is a star forming region in Casseopeia, and part of the Heart Nebula Complex. Often seen as an appendage in wide field shots, close up it has some fascinating dust lanes, back lighting and reflection as well as emission components.
Its relatively close to Earth at 6000 light years. This image is shot in SHO ( Hubble) Palette and is full frame ( no crop) at 2650mm Focal length.

I shot this over 4 nights about two weeks ago on my Planewave CDK14 out in the New Mexico desert.

This was my first test of 15 min unguided sub shooting on the Planewave mounted on an L-350 mount. I was able to use about 80% of all subs.

Tech stuff:
Scope : Planewave CDK14
Mount : Planewave L-350
Camera : ZWO ASI 6200 MM Pro ZWO filter wheel Astronomik filters
35 x 15 min Ha 12nm
30 x15 Min OIII 12nm
24 x15 Min SII 12nm
Shot as Bin 1 downsampled to Bin 2x2 in Pixinsight
Processing Pixinsight and PS 2021

Copyright: Richard Whitehead 2021