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Messier 101

Messier 101

Object Name:  Messier 101, also known as NGC 5457
Object Type:  Spiral galaxy
Constellation: Ursa major
Acquisition Date: April 25, 2020
Location: Tierra del Sol, San Diego County, California
Equipment:
• Imaging Scope – Takahashi FSQ-106 EDX IV
• Imaging Camera – ZWO ASI1600MM-C with EFW2
• Filters – Baader 36mm unmounted luminance filter
• Guiding – Borg 77ED with ZWO ASI120MM-S
• Mount – Astro-Physics 900GTO
Camera Control – Sequence Generator Pro
Guider control – PHD2
Acquisition Details:
• Imaging Camera – gain 76, offset 15 – cooled to -15
• Exposures – 100 x 180 second subexposures – 5 hours total exposure time
Processing:
PixInsight and Photoshop CC were used to process the images.
• PixInsight –
⁃ Image calibration, alignment and integration
⁃ HistogramTransformation for histogram adjustment
• Photoshop –
⁃ additional adjustments to histogram
Thanks for looking.  Click on the image below for a larger version.  The second image below is an annotated version which identifies some of the many background galaxies in the field.

Messier 101
Messier 101
Messier 101
Messier 101

 

Posted in Galaxies

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