Hemisphere:  Northern  ·  Contains:  PGC 1699302  ·  PGC 1705448  ·  PGC 1705658  ·  PGC 66428  ·  PGC 66471  ·  PGC 66506  ·  PK072-17.1
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Abell 74 (PK072-17.1), 



    
        

            Boris US5WU
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Abell 74 (PK072-17.1)

Getting plate-solving status, please wait...
Abell 74 (PK072-17.1), 



    
        

            Boris US5WU
Powered byPixInsight

Abell 74 (PK072-17.1)

Acquisition details

Frames:
Astrodon B: 24×150(1h) bin 1×1
Astrodon G: 24×150(1h) bin 1×1
Astrodon Ha 1.25 5nm: 44×900(11h) bin 2×2
Astrodon O3 1.25 3nm: 52×900(13h) bin 2×2
Astrodon R: 24×150(1h) bin 1×1
Integration:
27h

RA center: 21h16m53s.74

DEC center: +24°0759.8

Pixel scale: 1.052 arcsec/pixel

Orientation: -1.890 degrees

Field radius: 0.514 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 2735x2194

File size: 7.3 MB

Locations: Home observatory, Chervonograd, Lviv region, Ukraine

Data source: Backyard

Description

Abell 74 (PK072-17.1) is a large, ancient planetary nebula in the constellation Vulpecula. The object is mostly circular with an apparent diameter of 13.5 arcminutes although it appears to have additional structure extending N-S to perhaps 15 arcminutes. The central blue star, presumably the progenitor star, is very small, but clearly visible just above and to the left of the bright central white star. It has a close small white companion star. The white dwarf central star (WD 2114+239) has an effective temperature of 108,000 K. Distance measurements for planetary nebula have a wide variance. The distance provided for Abell 74 is about 2,500 light years. Abell 74 is interacting with the interstellar medium (ISM).

This image taken over several nights in October 2021.

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