Continuing with the star theme this group in Cygnus is another delight through the eyepiece or binoculars with its contrasting colours. Situated between Deneb & Rukh the brightest components are 30 & 31 Cygni with 31 Cygni dominating. This is itself a spectroscopic binary of type K0 @ 4th magnitude. Details: 10" f4.3 Newt. 20 x various exposures (up to 3 minutes) @ iso1600 with CLS in DSS, FIV, CS2 & XAT.20.8.11
31 Cygni group
Continuing with the star theme this group in Cygnus is another delight through the eyepiece or binoculars with its contrasting colours. Situated between Deneb & Rukh the brightest components are 30 & 31 Cygni with 31 Cygni dominating. This is itself a spectroscopic binary of type K0 @ 4th magnitude. Details: 10" f4.3 Newt. 20 x various exposures (up to 3 minutes) @ iso1600 with CLS in DSS, FIV, CS2 & XAT.
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