β Cygni

Beta Cygni, Albireo, may well be the most colourful binary in the heavens; the primary is a deep yellow, often described as ‘golden’, while its companion is a bluish-green, or sapphire:
      3.2, 4.7; 55º, 34.7". A perfect binocular double.

Albireo is just inside the Summer Triangle, midway between Vega and Altair.

Struve 2557 is a vast star system (which goes under several names). It's found just south of phi Cygni. The components (B through M) are all fainter than 10 but most are accessible with binoculars:
     AD 7.5, 10.3; 146º, 47.7"
     AE 7.5, 12.2; 164º, 65.6"
     AF 7.5, 10.49; 179º, 89.0"
     AG 7.5, 12.9; 229º, 39.2"
     AH 7.5, 10.5; 92º, 103.7"
     AI 7.5, 12.1; 115º, 100.2"
     AJ 7.5, 14.0; 123º, 27.6"


About four binocular fields east is the intriguing Veil Nebula. It's easier to find if, with the naked eye, you trace your way back toward alpha, stopping at gamma, then making a sharp left, southwest to epsilon. The Veil Nebula is several degrees below epsilon: binoculars.

The Veil Nebula show the remnants of a supernova, which occurred between 10,000 and 15,000 years ago. Although it has a collective visual magnitude of 7, since it is so spread out the actual magnitude is extremely faint. An 8 inch telescope with an OIII filter will bring out the fine lacework. Also, on a perfect night, it can be enjoyed with large binoculars.

Once experienced, the Veil Nebula remains as one of the most impressive sights in the heavens.


There are two binaries in the neighbourhood, Struve 2716 (49 Cygni) and Struve 2700 - just outside the viewing area to the west.
      Struve 2716 - two white stars: 5.8, 8.1; 52º, 3.5".
      Struve 2700 - an orange primary and pale bluish companion: 7.0, 8.8; 284º, 25.1" This star is found in a 'miniature Cygnus' in the position of Deneb.

Raise your glasses north until epsilon is close to the bottom of your field of view; nearly centred will appear lambda Cygni, a multiple star system. Component B can be split with difficulty in large telescopes, while component C is an easy binocular double.
      AB: 4.7, 6.3; 5º, 0.9" (white and yellowish)
      AC 4.7, 9.7; 106º, 82.9"

Now drop again to have epsilon on the northern edge, and move east one binocular field, until zeta Cygni is centred, near the southern edge. A nice telescopic double star here with (perhaps) similar coloured stars:
      Otto Struve 437 (two yellow-orangish stars): 7.2, 7.4; 20º, 2.5"

Just out of this binocular field, to the north, is upsilon Cygni, a multiple star system (Otto Struve 433):
      AB: 4,4, 10.0; 222º, 14.2"
      AC: 4.4, 9.9; 181º, 21.2"
      AD: 4.4, 12.0; 308º, 57"

From upsilon, north a half binocular field brings 61 Cygni into view. Click on 61 Cygni on the map for its details.

Finally mu Cygni is a multiple system for large binoculars (except for its closest neighbour). From zeta Cygni move southeast about one and a half binocular fields.
      AB: 4.8, 6.2; 316º, 1.8"
      AC: 4.8, 12.9; 292º, 76.6"
      AD: 4.8, 6.9; 45º, 197.5"
      AF: 4.8, 12.6; 72º, 111.5"
      AG: 4.8, 13.8; 73º, 168"

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