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A star shed this ring of ionized gas as it collapsed into a white dwarf.
Telescope:   Stellina
Length:   400mm
Aperture:   80mm
F-stop:   f/5.0
Sessions:   2
Captured:   2021-06-19 to 2021-09-09
Lights:   107
Exposure:   10
Total exposure:   17 m
Ra:   18h 53m 34.9s
Dec:   +33° 01' 49.641
Size:   31.657 x 21.434 arcmin
Radius:   0.319 deg
Scale:   0.618 arcsec/pixel