« on: March 29, 2017, 10:38:32 AM »
Was looking through the good old Night Sky Observers Guide last night, curious about double stars in Cygnus - I am out before dawn these days and Cygnus is up high then.
I came across 61 Cygni, aka Struve 2758. Its a wide double, 30.3" separation, which makes it good for binoculars. Its the color I'm really interested in seeing - here's the description from the book:
"61 Cygni, a wide, easy separated double of two orange K-type dwarfs, is only 11.2 light years distant, the twelfth nearest star or star pair to the Solar System. The two stars orbit each other in a period of 650 years, and will achieve maximum separation, 34", bout 2100 A.D. The components have luminosities of only 8% and 4% of the Sun's. Their color is probably at its best in binoculars, with which both stars are a stunning chrome orange-red.
4-6" Scopes - 75x: An easy target for small telescopes, 61 Cygni is a wide pair of bright orange stars."
Its easy to find, just off Tau Cygni behind the western wing. Anyone seen this double?