Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 108  ·  M 97  ·  NGC 3556  ·  NGC 3587  ·  NGC 3594  ·  Owl Nebula  ·  PK148+57.1
Getting plate-solving status, please wait...
Cosmic perspective : M97 deep version & M108, 



    
        

            Jean-Baptiste Auroux
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Cosmic perspective : M97 deep version & M108

Getting plate-solving status, please wait...
Cosmic perspective : M97 deep version & M108, 



    
        

            Jean-Baptiste Auroux
Powered byPixInsight

Cosmic perspective : M97 deep version & M108

Acquisition details

Dates:
April 3, 2021 ·  April 4, 2021 ·  April 5, 2021
Frames:
Astronomik B 1.25": 24×300(2h) -20°C bin 2×2
Astronomik G 1.25": 24×300(2h) -20°C bin 2×2
Astronomik Ha 6nm: 12×600(2h) -20°C bin 1×1
Astronomik L 1.25": 36×600(6h) -20°C bin 1×1
Astronomik OIII 6nm: 18×600(3h) -20°C bin 1×1
Astronomik OIII 6nm: 12×600(2h) -20°C bin 2×2
Astronomik R 1.25": 24×300(2h) -20°C bin 2×2
Integration:
19h
Darks:
64
Flats:
12
Bias:
101
Avg. Moon age:
22.22 days
Avg. Moon phase:
49.24%
Bortle Dark-Sky Scale:
4.00

RA center: 11h13m03s.30

DEC center: +55°2010.9

Pixel scale: 1.530 arcsec/pixel

Orientation: -9.445 degrees (flipped)

Field radius: 0.744 degrees

More info:Open 

Resolution: 2729x2188

File size: 25.0 MB

Data source: Backyard

Description

A classic of the spring sky: the duo of the galaxy M108 with the Owl planetary nebula (M97) in Ursa Major.

M97 is 2000 LY away, while M108 is 32 millions LY away (16.000 times more distant).

I completed the LRGB with exposures with Ha and especially OIII, in order to gain signal on M97: the much more faint outer ring of M97, not so often seen, is visible. Some pretty little galaxies are also visible in the background !

Comments

Revisions

  • Final
    Cosmic perspective : M97 deep version & M108, 



    
        

            Jean-Baptiste Auroux
    Original
    Cosmic perspective : M97 deep version & M108, 



    
        

            Jean-Baptiste Auroux
    B
    Cosmic perspective : M97 deep version & M108, 



    
        

            Jean-Baptiste Auroux
    C

B

Description: OIII layer, showing the outer ring of M97.
Raw file + STF for visualization.

Uploaded: ...

C

Description: AAPOD² celebration ! :) (27/04/2021)
https://www.aapod2.com/blog/cosmic-perspective-pn-m97-amp-m108

Uploaded: ...

Sky plot

Sky plot

Histogram

Cosmic perspective : M97 deep version & M108, 



    
        

            Jean-Baptiste Auroux