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Contains:  NGC 1283, NGC 1282, NGC 1278, NGC 1277, NGC 1275, NGC 1273, NGC 1272, NGC 1270, NGC 1268, NGC 1267, NGC 1265, IC 312, NGC 1260
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The Perseus Cluster - Abell 426, 





    
        

            Andrea Alessandrelli
The Perseus Cluster - Abell 426

The Perseus Cluster - Abell 426

Technical card

Resolution: 2240x1680

Dates:Sept. 24, 2017Sept. 25, 2017Sept. 26, 2017

Frames:
Baader Planetarium B-CCD 1.25": 60x60" (gain: 139.00) -20C bin 1x1
Lumicon Deep Sky 1.25": 326x60" (gain: 139.00) -20C bin 1x1
Baader Planetarium G-CCD 1.25": 71x60" (gain: 139.00) -20C bin 1x1
Baader Planetarium Ha 1.25" 7nm: 20x180" (gain: 139.00) -20C bin 1x1
Baader Planetarium R-CCD 1.25": 71x60" (gain: 139.00) -20C bin 1x1

Integration: 9.8 hours

Darks: ~30

Flats: ~20

Bias: ~50

Avg. Moon age: 5.04 days

Avg. Moon phase: 26.40%

Bortle Dark-Sky Scale: 6.00

Temperature: 11.00

Astrometry.net job: 1745426

RA center: 49.726 degrees

DEC center: 41.488 degrees

Pixel scale: 1.427 arcsec/pixel

Orientation: 271.803 degrees

Field radius: 0.555 degrees

Locations: Home Backyard, Geleen, Limburg, Netherlands

Description

Finally after 23 cloudy nights in a row, I had 2 nights (and a half) without clouds. Seeing was good but unfortunately humidity reached 100%, transparency was affected by the mist and light pollution was boosted by the reflection of the water in the air. I even had to use my hair dryer on the guide scope because of the dew!

This is one of the two targets I photographed and is very dim (reported 13.0 magnitude on DSO browser), so a good test for my scope, camera and sky.

Comments

Author

Epox
Andrea Alessandrelli
License: None (All rights reserved)
2272
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Revisions

  • The Perseus Cluster - Abell 426, 





    
        

            Andrea Alessandrelli
    Original
  • The Perseus Cluster - Abell 426, 





    
        

            Andrea Alessandrelli
    B
  • The Perseus Cluster - Abell 426, 





    
        

            Andrea Alessandrelli
    G
  • The Perseus Cluster - Abell 426, 





    
        

            Andrea Alessandrelli
    H
  • Final
    The Perseus Cluster - Abell 426, 





    
        

            Andrea Alessandrelli
    I
  • The Perseus Cluster - Abell 426, 





    
        

            Andrea Alessandrelli
    J

B

Annotated version, the number of galaxies is impressive.

G

Uploaded in JPG format to see if it display the correct histogram

H

Full frame and with a bit more "natural" look

I

Now it looks more like a galaxy cluster doesn't it? :) It was big work, the image was full of gradient because of a green channel that is actually obscene in terms of quality.

J

I generated a text file with the galaxies list, the count is 115 (excluded the ones at past the border... funny PI solved them :)

Sky plot

Sky plot

Histogram

The Perseus Cluster - Abell 426, 





    
        

            Andrea Alessandrelli