Chaple’s Arc and The Cygnus Fairy Ring – Asterism In Cygnus
The following pencil sketch by the writer using a 10-inch reflector @ 57x with a 1.1º true field of view, a blank 5 x 8 notecard with the colors inverted using via a scanner. Only a No. 2 pencil and an eraser were used. RI
To read the complete Observer’s Challenge report. Click on the following link.
august-2016-observers-challenge-chaples-arc
I observed Chaple’s Arc from the foothills of North Carolina with a 10-inch f/4.5 reflector on August 13, 2015. Transparency was poor due to very high humidity but seeing was excellent.
I located and recognized immediately the asterism known as Chaple’s Arc and the Cygnus Fairy Ring using a 32 mm eyepiece @ 36X with a 1.8º FOV. The first star I noticed was double star H1470 with the primary being a ruddy or rust color. When increasing the magnification, using a 20 mm eyepiece @ 57X with a 1.1º FOV, I could see at least eight or more separate pairs of double stars making a circle. This beautiful ring of double stars was framed very nicely within the 1.1º field.
