Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  M 81  ·  NGC 3031
Getting plate-solving status, please wait...
M81 - finally something..., 



    
        

            maudy2u
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M81 - finally something...

Getting plate-solving status, please wait...
M81 - finally something..., 



    
        

            maudy2u
Powered byPixInsight

M81 - finally something...

Acquisition details

Dates:
Jan. 21, 2021
Frames:
336×90(8h 24′)
Integration:
8h 24′
Avg. Moon age:
7.92 days
Avg. Moon phase:
55.75%

RA center: 09h55m39s.470

DEC center: +69°0400.21

Pixel scale: 0.400 arcsec/pixel

Orientation: -90.343 degrees

Field radius: 0.306 degrees

More info:Open 

Resolution: 4424x3307

File size: 24.9 MB

Data source: Backyard

Description

M 81discovered by Johann Elert Bode, along with M 82 in 1774, described it as a "nebulous patch", which "appears mostly round and has a dense nucleus in the middle." It was the second Galaxy my son and I first saw years ago with the our SE6.

After attempting to capture M81 for the past four years, this year on January 20 and 21 (21st day of the the 21st year of the 21st century) finally offered two clear nights after 2 months of cloud.

- 210 Lum

- 50 R

- 41 G

- 35 B

Comments

Revisions

  • M81 - finally something..., 



    
        

            maudy2u
    Original
  • M81 - finally something..., 



    
        

            maudy2u
    B
  • M81 - finally something..., 



    
        

            maudy2u
    C
  • M81 - finally something..., 



    
        

            maudy2u
    E
  • Final
    M81 - finally something..., 



    
        

            maudy2u
    F

B

Description: More noise reduction

Uploaded: ...

C

Description: Adjusted background

Uploaded: ...

E

Description: Another background adjust, attempt to pull out the Ha and star fix.

Uploaded: ...

F

Description: Played with contrast and colour again :)

Uploaded: ...

Sky plot

Sky plot

Histogram

M81 - finally something..., 



    
        

            maudy2u