Gallery » Alfirk

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Alfirk, roughly translated 'the flock,' is the name of a triple star system that is classified as β Cephei (Beta Cephei). It is a part of the outline of the Cepheus constellation. The main star is a blue subgiant and gives it the distinctive blue color.
Telescope:   Stellina
Length:   400mm
Aperture:   80mm
F-stop:   f/5.0
Sessions:   1
Captured:   2021-10-09
Lights:   21
Exposure:   10
Total exposure:   3 m
Ra:   21h 28m 15.8s
Dec:   +70° 34' 30.934
Size:   61.98 x 41.54 arcmin
Radius:   0.622 deg
Scale:   0.549 arcsec/pixel