SH2-135

Image Description and Details :

SH2-135, a faint emission nebula very often missed by the amateur astrophotographers.
There aren't too many photos of this target and most of them are in HaRGB. The Oiii is nearly invisible and I had to stretch the stack as much as I possibly could to highlight the Oiii areas.

Equipment used:
AZEq6-GT
AstroTech 106LE with upgraded Moonlite focuser
TSFlat 2" field flattener
ASI294MM Pro Cmos camera, cooled at - 15°C
8x1.25" ZWO USB filterwheel
Chroma 3nm 1.25" Ha, Oiii and Sii filters
Qhyccd QHY5L-IIM guide camera
OPTICSTAR AR90 F5.5 guidescope
Qhyccd Polemaster

Software used:
Eqmod, SGP - Sequence Generator Pro, PHD2, Stellarium with stellariumScope, SharpCap for polar alignment

Date: 15.09 to 25.10.2021

Location: Bushey Herts, UK, bortle 7

Ha: 80x300sec Bin 2x2, Gain 200 Offset 10
Oiii: 52x300sec Bin 2x2, Gain 200 Offset 10
Sii: 60x300sec Bin 2x2, Gain 200 Offset 10
Total integration time 16 hours

Stacked in AstroPixel Processor and processed in Pixinsignt and Photoshop CC 2021

Copyright: Emil Andronic