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Contains:  NGC 2403
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NGC 2403 Galaxy, 





    
        

            Michael Timm
NGC 2403 Galaxy

NGC 2403 Galaxy

Technical card

Resolution: 7136x4951

Dates:Feb. 15, 2019

Frames: 351x60" (gain: 120.00) -20C bin 1x1

Integration: 5.8 hours

Darks: ~105

Flats: ~50

Flat darks: ~50

Bias: ~250

Avg. Moon age: 10.03 days

Avg. Moon phase: 76.71%

Bortle Dark-Sky Scale: 4.00

Temperature: 2.00

Astrometry.net job: 2528060

RA center: 114.216 degrees

DEC center: 65.605 degrees

Pixel scale: 0.403 arcsec/pixel

Orientation: 95.133 degrees

Field radius: 0.487 degrees

Locations: Backyard, Vechelde, Niedersachsen, Germany

Data source: Backyard

Description

I have really a strong issue with noise. This is NGC 2403, a wonderful galaxy in the M 81-group. The image was taken under a nearly 80 % moon and therefor lacks details. But the annoying noise is lousy, i dont know how to get rid of it. Tonight i will try imaging with the native focal length, maybe the reducer has something to with it (but i doubt it).

[Edit]: Image 'B' shows the noise blob by using the ExtractWaveletLayer-scipt in PI.

Due to high clouds i could not image last night, so i could not check if the CCDT67 is the problem.

Comments

Author

khrrugh
Michael Timm
License: None (All rights reserved)
1751
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Revisions

  • Final
    NGC 2403 Galaxy, 





    
        

            Michael Timm
    Original
  • NGC 2403 Galaxy, 





    
        

            Michael Timm
    B

B

The annoying 'noise blob' in the center. Can be better viewed in my previous image of M81.

Sky plot

Sky plot

Histogram

NGC 2403 Galaxy, 





    
        

            Michael Timm