The Dumbbell Nebula

Dumbbell Nebula

Other names:NGC 6853, M27
Distance:860 light years
Date:08, 10 and 22 -Jul-2018
Telescope:GSO RC8 carbon
Field of view:39' x 22'
Cameras:Canon 600D, Canon T3i mono mod
Filters:Baader 7nm Ha, Baader 8nm O-III
Mount:Skywatcher EQ6-R
Guiding:ZWO OAG, Lacerta MGen-II
Exposure time:7h 02min
Ha 20 x 10min
O-III 12 x 10min
OSC51 x 2min
Sizes 1920 x 1080 | 3840 x 2160 | 2018 version 1920 x 1080
optional processing OSC only | HOO
This image replaces the first light with my RC8 carbon that was poorly collimated by the time. I was not happy with the poor result and the bad color balance. This time, using Ha and O-III for the nebula and OSC for the stars the result is much better.