Jump to content

Narrowband

Pinwheel Galaxy (M101)


Recommended Posts

After a couple of days of clear nights and the forecast looking good for another it seemed like a good idea to go to a place with darker skies than London and try a more challenging target. Alas, the run of good weather came to an end and upon arrival at Kelvedon Common in Essex the sky was murky with only Ursa Major bright and easily visible...so revisiting M101 made sense. The poor conditions meant that even with 6 minute exposures the galaxy was only just visible on the subs so I was pleasantly surprised at how the resulting image came out.

004 x 180 second exposures at Unity Gain (139) cooled to -20°C
014 x 360 second exposures at Unity Gain (139) cooled to -20°C
074 x dark frames
030 x flat frames
100 x bias/offset frames
Total integration time = 1 hour and 36 minutes

Captured with APT
Guided with PHD2
Processed in Nebulosity, Fitsworks, and Photoshop 

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

M101.jpg

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.