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BETA CYGNI

Albireo (β Cyg)

Double star · Cygnus

Excellent at 22:00Current setup · 150 mm reflector

Educational visual approximation · angular framing calculated

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Your observing guide

A celebrated contrasting pair: a warm gold star and a fainter blue companion.

70.8°Altitude now
201.9°Azimuth now
3.1Visual magnitude
0.6′Angular diameter
Clear of your local horizon

How to observe it

Try 30–60×. This is a rewarding target even under an urban sky.

Filter advice

No filter needed

A classic gold-and-blue pair, and one of the easiest doubles in the sky to split — any small telescope, even steadily-held binoculars, will show two distinctly coloured stars sitting side by side.

Across your observing night

Excellent at best
20:27–00:27Suggested window
72°Highest in this night
Rise 13:15Transit 21:30Set 05:50

Fixed-target events sampled every 5 min; no crossing may mean circumpolar or never rising. Unobstructed horizon. All times in Europe/Zurich.

A good fit from your setup

Ideal

150 mm reflector

6 mm eyepiece · 125× magnification

0.48°True field
1.2 mmExit pupil

Recommendations balance field, magnification and aperture. Seeing is not forecast; try lower power when the air is unsteady. Suitability is a heuristic, not a purchase recommendation.

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