One of the most well-known objects in the night sky is the supernova remnants from the Crab Nebula. I captured this across two nights with my large refractor telescope.

Targets:
Crab Nebula (M1)

Imaging Telescope:
Explore Scientific FCD100 Series 127mm Refractor Telescope

Imaging Camera:
ZWO ASI1600MM Cool

Focuser:
MoonLite 2.5" Focuser with Motor Auto-Focus

Field Flattener:
HoTech 2" SCA Field Flattener

Mount:
Celestron CGX

Polar Alignment:
QHYCCD PoleMaster

Guide scope:
Orion ST80

Guide Camera:
Lodestar X2

Frames:

Crab Nebula:
Optolong Ha: 146x240" (gain: 139, offset: 21)
Optolong OIII: 54x240" (gain: 75, offset: 15)
Integration: 13.33 hours

Guide Software:
PHD2

Calibration Frames:
Darks: 50, Bias: 50, Flats: 50

Capture software:
Sequence Generator Pro (SGP)

#astronomy​​​ #astrophotography​​​