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Contains:  NGC 7243
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Open Star Cluster NGC 7243, Caldwell 16, 





    
        

            Steven Bellavia
Open Star Cluster NGC 7243, Caldwell 16

Open Star Cluster NGC 7243, Caldwell 16

Technical card

Resolution: 5494x3670

Dates:Sept. 7, 2019

Frames:Astronomik L2 UV/IR Cut: 30x120" (gain: 100.00) -15C bin 1x1

Integration: 1.0 hours

Darks: ~30

Flats: ~30

Flat darks: ~30

Avg. Moon age: 8.70 days

Avg. Moon phase: 63.79%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 20.00

Mean FWHM: 6.00

Temperature: 15.00

Astrometry.net job: 2921266

RA center: 333.804 degrees

DEC center: 49.887 degrees

Pixel scale: 1.993 arcsec/pixel

Orientation: 176.419 degrees

Field radius: 1.829 degrees

Data source: Backyard

Description

NGC 7243, Caldwell 16, is an open cluster in the constellation Lacerta. It lies approximately 2,800 light-years away, and is thought to be just over 100 million years old, consisting mainly of white and blue stars.
The first image ("original") was First Light for the William Optics 51mm f/4.9 Petzval "RedCat" Apo refractor. The next ("final") image was after tweaking the collimation and support screws around the objective cell, while viewing an artificial star. Both images are deliberately un-cropped.

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Author

bellavia
Steven Bellavia
License: None (All rights reserved)
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Revisions

  • Open Star Cluster NGC 7243, Caldwell 16, 





    
        

            Steven Bellavia
    Original
  • Final
    Open Star Cluster NGC 7243, Caldwell 16, 





    
        

            Steven Bellavia
    C

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Open Star Cluster NGC 7243, Caldwell 16, 





    
        

            Steven Bellavia