Hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  11 sig01 UMa  ·  13 sig02 UMa  ·  14 tau UMa  ·  22 UMa  ·  23 h UMa  ·  24 d UMa  ·  27 UMa  ·  28 UMa  ·  32 UMa  ·  35 UMa  ·  8 rho UMa  ·  Bode's Galaxy  ·  Cigar galaxy  ·  Coddington's Nebula  ·  IC 2389  ·  IC 2438  ·  IC 2458  ·  IC 2574  ·  IC 2600  ·  IC 2601  ·  IC 511  ·  IC 520  ·  IC 529  ·  M 81  ·  M 82  ·  NGC 2614  ·  NGC 2629  ·  NGC 2630  ·  NGC 2633  ·  NGC 2634  ·  And 49 more.
Getting plate-solving status, please wait...
M81, M82, IFN and Comet Atlas, 



    
        

            tommy_nawratil
Powered byPixInsight

M81, M82, IFN and Comet Atlas

Getting plate-solving status, please wait...
M81, M82, IFN and Comet Atlas, 



    
        

            tommy_nawratil
Powered byPixInsight

M81, M82, IFN and Comet Atlas

Acquisition details

Dates:
Feb. 24, 2020
Frames:
730×120(24h 20′)
Integration:
24h 20′
Avg. Moon age:
0.78 days
Avg. Moon phase:
0.68%

RA center: 09h50m21s.4

DEC center: +69°2006

Pixel scale: 15.647 arcsec/pixel

Orientation: -91.769 degrees

Field radius: 9.082 degrees

More info:Open 

Resolution: 3460x2351

File size: 15.7 MB

Locations: my little astrofarm, Weppersdorf, Austria

Data source: Backyard

Description

A simple tracking mount and a decent lens on a decent camera can do wonderful things, as everybody knows. Just letting it run for a couple of nights, and I was surprised to find 730 subframes on the SD card. Of course the goal was to feature the dust and weak nebula filling the field just around the popular couple M81/82, but distilling the data into a nice and clean looking picture was a nice pile of processing steps too.

As it happened, just at that time Comet Atlas passed the field before it broke apart. Its the green dot at right, almost "lost in transition" before the background of deep and deeper sky objects.

See here a small video showing its movement during the exposure sessions:

Comet Atlas Subframe Video

Comments

Revisions

    M81, M82, IFN and Comet Atlas, 



    
        

            tommy_nawratil
    Original
    M81, M82, IFN and Comet Atlas, 



    
        

            tommy_nawratil
    B

B

Description: annotated version

Uploaded: ...

Sky plot

Sky plot

Histogram

M81, M82, IFN and Comet Atlas, 



    
        

            tommy_nawratil