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Contains:  NGC 3862
Getting plate-solving status, please wait...
In and behind Abell 1367. Manually added distances (Oh, and 3 Quasars ), 





    
        

            Kees Scherer
In and behind Abell 1367. Manually added distances (Oh, and 3 Quasars )

In and behind Abell 1367. Manually added distances (Oh, and 3 Quasars )

Technical card

Resolution: 5752x3882

Dates:April 18, 2018

Frames:Hutech IDAS 2" LPS-P2: 109x300" (gain: 1.00) -20C bin 1x1

Integration: 9.1 hours

Darks: ~40

Flats: ~26

Bias: ~150

Avg. Moon age: 2.59 days

Avg. Moon phase: 7.40%

Mean SQM: 20.90

Astrometry.net job: 2025852

RA center: 176.119 degrees

DEC center: 20.179 degrees

Pixel scale: 1.113 arcsec/pixel

Orientation: 269.572 degrees

Field radius: 1.073 degrees

Locations: Knight Observatory,Quinta Castelo Novo, Serra de Tomar, Portugal

Data source: Backyard

Description

Image dates: 5,6,16,17,18 april 2018.
2 x Drizzle was used in APP (and a crop)

The "Original" revision has an inverted inset with a blow-up of NGC3842 with the 3 Quasars.

Platesolved in PI and Annotated with PGC catalog. The 290 PGC Galaxy numbers where used to find the "Modz" (Cosmological distance modulus) in the Hyperleda database: http://atlas.obs-hp.fr/hyperleda/

The modz value was converted to Megaparsecs: https://en.wikipedia.org/wiki/Distance_modulus
And finally converted to Million Lightyears and added with the PI Procees, Painting, Annotation Tool.

Only after adding the distances it becomes clear that there are 3 distinct "levels", first the 350 Million lightyears for Abell 1367 members, second a group at around 1500 Million LJ and third a group at around 2500 Million LJ. And many, many more at greater distances (not in the PGC catalogue)

Comments

Author

keesscherer
Kees Scherer
License: Attribution Creative Commons
1834
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Revisions

  • In and behind Abell 1367. Manually added distances (Oh, and 3 Quasars ), 





    
        

            Kees Scherer
    Original
  • Final
    In and behind Abell 1367. Manually added distances (Oh, and 3 Quasars ), 





    
        

            Kees Scherer
    B

B

Added Distances Manually

Sky plot

Sky plot

Histogram

In and behind Abell 1367. Manually added distances (Oh, and 3 Quasars ), 





    
        

            Kees Scherer

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