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-GTAstroTech 106LE with upgraded Moonlite focuserTSFlat 2" field flattenerASI294MM Pro Cmos camera, cooled at - 15°C8x1.25" ZWO USB filterwheelChroma 3nm 1.25" Ha, Oiii and Sii filtersQhyccd QHY5L-IIM guide cameraOPTICSTAR AR90 F5.5 guidescopeQhyccd PolemasterSoftware used:Eqmod, SGP - Sequence Generator Pro, PHD2, Stellarium with stellariumScope, SharpCap for polar alignmentDate: 15.09 to 25.10.2021Location: Bushey Herts, UK, bortle 7Ha: 80x300sec Bin 2x2, Gain 200 Offset 10Oiii: 52x300sec Bin 2x2, Gain 200 Offset 10Sii: 60x300sec Bin 2x2, Gain 200 Offset 10Total integration time 16 hours Stacked in AstroPixel Processor and processed in Pixinsignt and Photoshop CC 2021

Copyright: Emil Andronic