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Contains:  M 81, Bode's nebulae, NGC 3031
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M81 Luminance Unguided, 





    
        

            ollie
M81 Luminance Unguided

M81 Luminance Unguided

Technical card

Resolution: 2153x1874

Dates:Feb. 20, 2017

Frames: 10x120"

Integration: 0.3 hours

Avg. Moon age: 23.64 days

Avg. Moon phase: 34.39%

Astrometry.net job: 1468123

RA center: 9h 55' 33"

DEC center: +69° 4' 15"

Pixel scale: 0.758 arcsec/pixel

Orientation: -2.940 degrees

Field radius: 0.301

Locations: Sky Ranch Observatory, Cerrillos, New Mexico, United States

Description

I started taking a lot of LRGB images and later noticed that I had messed up some settings with image capture and that I still had collimation problems. I went ahead and stacked (10) 120 second Luminance frames just to salvage something from that evening.

BTW, this is kinda cool: https://cottonbureau.com/products/rogue-nasa

The inverted image with annotation was to see apparent magnitudes of the dimmer stars with (1) 120 second L frame. It looks like I got down to ~18.5.

Comments

Author

ollie
ollie
License: None (All rights reserved)
2060
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Revisions

  • Final
    M81 Luminance Unguided, 





    
        

            ollie
    Original
  • M81 Luminance Unguided, 





    
        

            ollie
    B

Sky plot

Sky plot

Histogram

M81 Luminance Unguided, 





    
        

            ollie

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