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Contains:  IC 342
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IC 342 Galaxy, 





    
        

            star-watcher.ch
IC 342 Galaxy

Technical card

Imaging telescope or lens:Canon EF 400mm f/5.6L USM

Imaging camera:Canon EOS 70D

Mount:SkyWatcher Star Adventurer

Guiding telescope or lens:Orion Mini 50mm Guide Scope

Guiding camera:Lacerta MGEN 2

Software:Adobe LightroomPleiades Astrophoto PixInsight

Resolution: 3281x2245

Dates:Sept. 7, 2016Sept. 8, 2016Sept. 9, 2016

Frames: 123x180" ISO1600

Integration: 6.2 hours

Darks: ~51

Bias: ~115

Avg. Moon age: 6.50 days

Avg. Moon phase: 40.77%

Bortle Dark-Sky Scale: 6.00

Temperature: 15.00

Astrometry.net job: 1254615

RA center: 56.712 degrees

DEC center: 68.089 degrees

Pixel scale: 2.152 arcsec/pixel

Orientation: 178.758 degrees

Field radius: 1.188 degrees

Locations: Derendingen 454m, Solothurn, SO, Switzerland

Description

f/5.6

IC 342 Galaxy:
In the year 1935 IC 342 was declared by Harlow Shapley as the third largest spiral galaxy by angular size, smaller only than the Andromeda Galaxy (M 31) and the Triangulum Galaxy (M 33).

Image A/B: 7. Sep. 2016 (1 session)
40x180" ISO1600 (2h)
21 darks, 39 bias

Image C: 7./8. Sep. 2016 (2 sessions)
62x180" ISO1600 (3.1h)
39 darks, 76 bias

Image D/E: 7./8. Sep. 2016 (2 sessions)
64x180" ISO1600 (3.2h)
33 darks (sorted out 6 darks with distinctly lower temperatures than the others...), 76 bias
I used for the first time SubFrameSelector in PixInsight to sort out bad subs (I'd to fight with clouds...). 64 lights re-processed (total 90 lights from 2 sessions).

Image F: 7./8./9. Sep. 2016 (3 sessions)
110x180" ISO1600 (5.5h)
51 darks, 115 bias

Image G: 7./8./9. Sep. 2016 (3 sessions)
123x180" ISO1600 (6.2h)
51 darks, 115 bias

Comments

Author

star-watcher.ch
star-watcher.ch
License: None (All rights reserved)
7891
Like

Revisions

  • IC 342 Galaxy, 





    
        

            star-watcher.ch
    Original
  • IC 342 Galaxy, 





    
        

            star-watcher.ch
    B
  • IC 342 Galaxy, 





    
        

            star-watcher.ch
    C
  • IC 342 Galaxy, 





    
        

            star-watcher.ch
    D
  • IC 342 Galaxy, 





    
        

            star-watcher.ch
    E
  • IC 342 Galaxy, 





    
        

            star-watcher.ch
    F
  • IC 342 Galaxy, 





    
        

            star-watcher.ch
    G
  • Final
    IC 342 Galaxy, 





    
        

            star-watcher.ch
    H

B

7. Sep. 2016 (1 session)

C

7./8. Sep. 2016 (2 sessions)

D

7./8. Sep. 2016 (2 sessions) - completely new stacked and processed

E

7./8. Sep. 2016 (2 sessions) - less contrast

G

7./8./9. Sep. 2016 (3 sessions)

H

More noise reduction

Sky plot

Sky plot

Histogram

IC 342 Galaxy, 





    
        

            star-watcher.ch