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Astronomy sketches


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Beta Cygni

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Beta Cygβ CygAlbieroDouble star in Cygnus

Beta Cygni

Object Beta Cygni
Observed at Balatonudvari, HU, 2025-07-19
NELM ~ 7.0
Aperture 127 mm
Magnification 100x
FOV 0.68°

While the location has nice Bortle 4.5 sky, I’ve created this sketch surrounded by street lights. These lights made dark adaptation extremely difficult.

Object data

Objects Beta Cyg A Beta Cyg B
Fetched as HD 183912 HD 183914
Desc. Binary of main sequence stars Blue main sequence star †
RA 19h 30m 43s † 19h 30m 45s †
Dec 27° 57’ 35” † 27° 57’ 55” †
Magnitude 3.1 (3.21 + 5.85) 5.1
Spectral class K2II + B8:p B8V †

† fetched from astronomyapi.com