Despite my efforts to finish acquiring another target ( I have a small window of about 1 hour & 5 minutes every night), I have being imaging this target after 11pm for the last few days, I had scale this image to .80% and droplet size to 0.85 and I am very please with the results, and it seems finally I got a very good collimation out of my RC. any comments or how to improve my images are welcome. Sh2-261, also known as Lower's Nebula or Sharpless 261, is a large faint region of predominantly ionized hydrogen located on the outermost edge of the Milky Way between the Orion and Perseus arm. It was discovered in 1939 by Harold and Charles Lower, who were amateur astronomers. The nebula is surrounded by LBN 862 and LBN 864, and there are several dark nebulae in this field.2 The distance of the nebula is estimated to be about 3000 light years away. The nebula has a size of 80.7 x 53.8 arcmin and a radius of 0.808 deg. Source Sky & Telescope
Telescope TS-Optics 300mm/12" f/8 Ritchey-Chrétien Astrograph (truss)
Camera ZWO ASI2600MC DUO
Mount iOptron CEM120
Filters Antlia Triband RGB Ultra Filter - 2.00'' Mounted, Player One Anti-Halo Pro Dual-Band Ha+OIII Filter 2"
Location: Matthews, NC
Date: November 2023