IC 1795 (Fishhead) + Tommaso Massimo Stella + SHO-3nm

IC 1795 (Fishhead) 

Credit: Tommaso Massimo Stella 

Filters: Optolong SHO-3nm

 

 

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).
The distance from our solar system is estimated to be around 7500 light years.
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

Sky: SQM 20,45
Lights: 83x300s Ha(3nm) + 80x300s OIII(3nm), 88x300s SII(3nm)
Telescope: Skywatcher Quattro 250P + GPU Coma corrector
Camera: QHYCCD Astronomy Imaging 294M Pro
Mount: Sky-Watcher AZ-EQ6 GT
Filters: Optolong Astronomy Filter SHO 3nm