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Contains:  NGC 752, The star τAnd, The star δTri, The star 60And, The star 58And, The star γ2And, The star γTri, The star υAnd, The star Mothallah (αTri), The star βTri, The star Almach (γ1And), The constellation Triangulum (Tri)
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NGC 752 and the Constellation Triangulum, 





    
        

            Sigga
NGC 752 and the Constellation Triangulum

NGC 752 and the Constellation Triangulum

Technical card

Resolution: 1120x1080

Dates:Dec. 14, 2018

Frames: 30x179" ISO800

Integration: 1.5 hours

Darks: ~10

Flats: ~10

Avg. Moon age: 6.51 days

Avg. Moon phase: 40.72%

Bortle Dark-Sky Scale: 6.00

Temperature: -1.00

Astrometry.net job: 2588405

RA center: 30.182 degrees

DEC center: 36.913 degrees

Pixel scale: 42.933 arcsec/pixel

Orientation: 28.593 degrees

Field radius: 9.278 degrees

Locations: Garden, Hellerup, Denmark

Data source: Backyard

Description

NGC 752 (also known as Caldwell 28) is an open cluster in the constellation Andromeda. The cluster was discovered by Caroline Herschel in 1783 and cataloged by her brother William Herschel in 1786, although an object that may have been NGC 752 was described by Giovanni Batista Hodierna before 1654.

The large cluster lies 1,300 light-years away from the Earth and is easily seen through binoculars, although it may approach naked eye visibility under good observing conditions. A telescope reveals about 60 stars no brighter than 9th magnitude within NGC 752.

Triangulum is a small constellation in the northern sky. Its name is Latin for "triangle", derived from its three brightest stars, which form a long and narrow triangle. Known to the ancient Babylonians and Greeks, Triangulum was one of the 48 constellations listed by the 2nd century astronomer Ptolemy. The celestial cartographers Johann Bayer and John Flamsteed catalogued the constellation's stars, giving six of them Bayer designations.

--Wikipedia

This another serendipitous example of bad pointing (was aiming for Andromeda) and finding something interesting. I particularly like how constellation Triangulum is so apparent as is not so in sky for visual observation.

Comments

Author

Snjór
Sigga
License: None (All rights reserved)
2160
Like

Revisions

  • NGC 752 and the Constellation Triangulum, 





    
        

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    Original
  • NGC 752 and the Constellation Triangulum, 





    
        

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    B
  • NGC 752 and the Constellation Triangulum, 





    
        

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    C
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  • Final
    NGC 752 and the Constellation Triangulum, 





    
        

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    E

B

Full field image.

C

Fixed red channel and run denoise wavelet plug-in on GIMP, seem work quite nicely.

D

Fixed red channel again as I a blockhead with no attention to detail!

E

Maybe red finally fixed-OPERATOR ERROR! Yes finally fixed!

Sky plot

Sky plot

Histogram

NGC 752 and the Constellation Triangulum, 





    
        

            Sigga