NGC2403 (Caldwell 7)

The first opportunity to do some imaging in a long time. We opted for a fairly simple target and one we haven't imaged for 6 years. With a very clear night and everything working properly, we were able to get a lot of exposure on this object which resulted in a much better image and easier processing.

NGC 2403 (also known as Caldwell 7) is an intermediate spiral galaxy in the constellation Camelopardalis. It is approximately 8 million light-years distant and 90,000 light-years in diameter. It bears a similarity to M33, containing numerous star-forming H II regions.

 

15-16/03/2025

063 x 300-second exposures at Unity Gain (139) cooled to -11°C to -13°C

079 x dark frames

065 x flat frames

100 x bias/offset frames

Binning 1x1

Total integration time = 5 hours and 15 minutes

 

Captured with APT

Guided with PHD2

Processed in Nebulosity and Photoshop

Astrometry assistance from ASTAP

 

Equipment

Telescope: Sky-Watcher Explorer-150PDS

Mount: Skywatcher EQ5

Guide Scope: Orion 50mm Mini

Guiding Camera: ZWO ASI120MC

Imaging Camera: ZWO ASI1600MC Pro

Baader Mark-III MPCC Coma Corrector

Light pollution filter

Done