Spectroscopic Observations on Beta Persei (Algol) | Shelyak Instruments
Observer's Challenge – The Eclipses of Algol – British Astronomical Association
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Spectroscopic Observations on Beta Persei (Algol) | Shelyak Instruments
Algol (β Persei) | Facts, Information, History & Definition
An impression of the system Algol (Beta Persei). A blue spectral class B8 star with a diameter of 3 solar diameters and red-yellow spectral class K2 star of about 3.5 solar diameters
Psi Persei and Phi Persei, spectroscopy - Scientific Amateur Astronomy - Cloudy Nights
Algol (β Persei) | Facts, Information, History & Definition
Spectroscopic Observations on Beta Persei (Algol) | Shelyak Instruments
Algol - Wikiwand
Algol (Beta Persei)
Astronomy - Changes in brightness of eclipsing binary star Algol or Beta Persei. Illustration Stock Photo - Alamy
Algol (Beta Persei): Star System, Facts, Name, Location, Constellation | Star Facts
Algol - Beta Persei
Spectroscopic Observations on Beta Persei (Algol) | Shelyak Instruments
Algol (Beta Persei): Star System, Facts, Name, Location, Constellation | Star Facts
Algol star hi-res stock photography and images - Alamy
Algol / Beta Persei 3
Spectroscopic Observations on Beta Persei (Algol) | Shelyak Instruments
Algol - Beta Persei - β Per - The Demon Star | freestarcharts.com
Spectroscopy Observing Section | aavso
Algol - Wikipedia
Omicron Persei - Wikidata
Algol - Beta Persei - β Per - The Demon Star | freestarcharts.com
Epsilon Persei - Wikipedia
