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 a scanner.  Only a No. 2 pencil and an eraser were used.   Roger Ivester 

To read the complete Observer’s Challenge report.  Click on the following link.


Scanned Image 160890002

Chaple’s Arc as viewed 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.

The asterism known as Chaple’s Arc and the Cygnus Fairy Ring was easy to locate and see using a 32mm eyepiece @ 36x with a 1.8º FOV.  The most recognizable member of the group was double star H1470 with the primary being a ruddy or rust color.

When increasing the magnification, using a 20mm eyepiece @ 57x with a 1.1º FOV, I could see at least eight or more separate pairs of double stars making a circle.   

While taking a bicycle ride just the other day (August 6th 2020) I came across a yard with a true 360º Fairy Ring.  I just had to stop and take a photo.   Roger Ivester


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