Nice I also pictured this last night. Not as large as your very nice pic but is is OK.
11 frames each 1 minute, 40d + 85mm / 1.8 squeezed to f/2.2 @ ISO 1600 stacked with DSS and enhanced by Photoshop.
Last night 04:00 (UTC+8) from Sanur, Bali.
http://sky.velp.info/skypics3/large2...es-rho-oph.jpg