DWB111 – The Propeller Nebula in HST variation | Craig & Tammy Temple

Craig & Tammy Temple
Location of photo
Hendersonville, TN, USA
Date/Time of photo
June 19 - 21, July 7, 11 & 12, 2013
Telescope: Sky Watcher Quantum 120 Apo @ f/7 Accessories: SW Quantum matched flattener; Dew control by Dew Buster; Alnitak Flat-Man; Gerd Neumann Aurora flat panel Mount: Takahashi EM-200 Temma2 Camera: QSI583wsg CCD @ -10.0C Guiding: Starlight Xpress Lodestar via PHD Filters: Astrodon 5nm Ha, OIII, SII filters Exposure: 18 x 20min. binned 1x1 each in Ha, OIII, SII Acquisition: ImagesPlus 5.0 Camera Control Processing: PixInsight 1.8; Adobe PhotoShop CS5; Noel Carboni’s Actions
The Propeller Nebula is an HII emission nebula in the constellation Cygnus. Not much is known about it. Information such as the source of excitation and distance remain undetermined. It is believed that its mass is quite low, probably less than 50 solar masses. There is obscuring dust associated with this peculiar structure, but seems to occur mostly in front of it. Designations for this nebula are DWB-111, Semeis 57 and MRSL 479.
All comments must follow the Sky & Telescope Terms of Use and will be moderated prior to posting. Please be civil in your comments. Sky & Telescope reserves the right to use the comments we receive, in whole or in part, and to use the commenter’s username, in any medium. See also the Terms of Use and Privacy Policy.


This site uses Akismet to reduce spam. Learn how your comment data is processed.