|
M 57, Ring Nebula
Technical data: This image was done in cooperation with the Capella-Obseratory team and using their 24"f/8-Cassegrain telescope located in Crete/Greece SBIG STL11000 with Custom Scientific-Filterset L(RHa)(GOIII)(BOIII) exposure times in total (L=9x900s; R=4x900s; G=4x900s; B=4x900s; Ha 7x900s, OIII 12x900s all unbinned) Authors: Volker Wendel, Stefan Binnewies, Josef Pöpsel
Technical data: 12"f/20-Schiefspiegler and 15"f/8 newtonian for luminance data, same newtonian for color channels SBIG ST10XME, CFW8 and AO7 LRGB = 8x900s with the Schiefspiegler and 3x900s with the 15" newtonian R=3x600s; G=3x600s; B=3x600s; color channels bin 2) Comments: FWHM 1,65-1,8", the fainter double star above the Ring has a distance of 1,8" between the two stars Author: Bernd Flach-Wilken and Volker Wendel HOME GALAXIES GALACTIC NEBULA PLANETARY NEBULA STAR CLUSTERS SOLAR SYSTEM WIDEFIELDS |