SH 2-274 (Medusa Nebula)

SH 2-274
SH 2-274

A Planetary Nebula in constellation Gemini about 1500 light years from earth. At first it was thought to be a Supernova remnant, but more recent measurements of the expansion velocity suggest it to be more likely a Planetary Nebula. These are the outer shells of a sun-like star which have been expelled at the end of the active live of the star.

Acquisition Details

Scope: Borg 90FL/500 with 1.08x Flattener
Filter: IDAS NGS1
Camera: ZWO ASI 2600MC Pro
Mount: Skywatcher HEQ5 Pro
Guiding Scope: MiniBorg 50
Guiding Camera: ZWO ASI 290MM
Guiding Software: PHD2
Acquisition Software: APT
Light Frames: 24x300sec
Flats, Dark Flats, Bias, Darks
Camera settings: Gain 100, Offset 20
No moon
Bortle 4-5
Acquisition Date: Feb 13, 2021


Stacking Software: DSS
Imaging: PixInsight