LRGB image of M81 made with the 12inch F/9 Ritchey Chretien telescope.
LRGB = 340:420:290:275 minutes and each sub has been exposed for only 300 seconds.
Peter Shah - Collimation & Telescope servicing.
Visit my personal imaging website at astropix.co.uk For Image Processing Tutorials
Contact: pete@ccdimaging.co.uk
We can supply your new high quality Newtonian or Dall Kirkham Astrograph