Epsilon Lyrae (Double Double)
From the author of Sizing Up The Universe
Close-up showing that ε-Lyrae is a Double Double
23:04 EDT Jun 22, 2007.
Starlight Express SXV-H9 on 10" RCOS at f/9.
L=3x0.08 sec, R=4x0.3 sec, G=2x0.2 sec, B=2x0.3 sec.
A wider field of view shows the Baby Coathanger asterism
21:32 EDT Aug 9, 2018.
Starlight Express Trius SX-694 on 10" RCOS at f/9.
R=15x5 sec, G=11x5 sec, B=12x5 sec.