Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Contains:  M 101, M101, NGC 5422, NGC 5457, NGC 5474, NGC 5485, NGC5368, NGC5422, NGC5447, NGC5449, NGC5450, NGC5451, NGC5453, NGC5455, NGC5461, NGC5462, NGC5471, NGC5473, NGC5474, NGC5477, NGC5484, NGC5485, NGC5486
Getting plate-solving status, please wait...
M101 Wide Field, 


            Riedl Rudolf
Powered byPixInsight

M101 Wide Field

Technical card

Dates:March 16, 2020

Frames: 43x182" ISO1600

Integration: 2.2 hours

Darks: ~25

Flats: ~25

Bias: ~25

Avg. Moon age: 22.23 days

Avg. Moon phase: 49.12%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 21.50

Temperature: -5.00 job: 3332503

RA center: 14h 3' 4"

DEC center: +54° 19' 10"

Pixel scale: 3.159 arcsec/pixel

Orientation: 0.986 degrees

Field radius: 1.552 degrees

Resolution: 2938x1973

Locations: Home, St. Peter/O., Steiermark, Austria

Data source: Backyard


This is a picture with the new Sharpstar 2032PNT. This is a slightly cropped FF picture. The Sensor in SLR cameras is deep inside the camera. Vignetting is therefore big. I still do have problems with Flats. They look strange - making the picture rather worse than better.
The overall optical quality of the scope is really good, the corrector gives sharp stars over the full field of view. Corrected field works with FF-cameras.



Riedl Rudolf
License: None (All rights reserved)

Sky plot

Sky plot


M101 Wide Field, 


            Riedl Rudolf

In these public groups

Nikon Imagers