Astrophotographers hangout. Invite friends and notice chat bar on bottom.
EtaCarina in Narrowband, O3 and Ha Data with Orion Parsec Mono thru' 80mm Meade Series 5000 Refrac one hour each. combined with registar finetuned with PS CS 5.1; O3 blue, Ha Red, Synthetic green generated with with N. Carbonis Astrotools; Bendleby Ranges South Australia 15.03. 2018