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Pinwheel Galaxy – M101

Pinwheel Galaxy

This is the pinwheel galaxy which is located near the tail of the Big Dipper (ursa major).  The galaxy is hard to capture on a little scope but after 2 hours and 80 sub-exposures of 60 seconds, they were stacked and processed into this.  Filters were Luminance, Hydrogen Alpha, Red, Green, Blue and put through a lot of processing to bring it all out from the data.

Equipment

Telescope:  Meade 6000 series 70mm Quadruplet @ f/5
Main Camera:  ZWO ASI 1600mm-pro Monochrome
Mount:  Skywatcher EQ6r-Pro
Guide Scope:  William Optics 50mm Uniguide
Guide Camera:  ZWO ASI 290mm-mini
Computer:  ASIair PRO

Location

Location:  Pendleton, Oregon
Bortle:  4
Long & Lat:  45.67N, 118.79 W

Shoot Parameters

Ha Filter: 10×60″
Red Filter: 20×60″
Green Filter: 20×60″
Blue Filter:  20×60″
Light Filter:  10×60″
Calibration Bias: 20
Calibration Dark: 20
Calibration Flat: 20
Bad Pixel Map from APP

Integration Time:  ~80 minutes total
Gain:  139 (unity)
Cooling:  -20
Processing Software
:   Photoshop CC, Astro Pixel Processor, Starnet, ASIair PRO

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Feel free to use any of the images on here as you see fit.  You can either give credit or not give credit if you use an image, the pictures taken on this site free to use wherever and however you like.  Drop us a line if you use any so we can see how they look!

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Link to: Rose Cluster – M5 Link to: Rose Cluster – M5 Rose Cluster – M5 Link to: Elephant’s Trunk Nebula – IC1396 Link to: Elephant’s Trunk Nebula – IC1396 Elephant’s Trunk Nebula – IC1396
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