NGC 3507 / NGC 3501 Date: Exposure: FWHM: Additional Notes: 19 March - 8 April 2010 12.8 hours LRGB (384:92:115:176 min.) Telescope: Mount: Camera: Filters: 18” f/4.5 Newtonian Heavy Forkmount SBIG ST10-XME Astronomik Typ II.c LRGB The content of the entire website is subject to German copyright law. Copyright 2012 Astro-Kooperation All rights reserved. [click photo to enlarge]