M13 LRGB 3 hour capture
M13 is a great astro target this time of year and I recently posted an image based on a single night's captures. My Questar telescope has a slow focal ratio -- f/16 -- which leads to big differences in images based on the total amount of capture time. In this case you can clearly see the differences in color and detail for 3 hours versus 35 minutes of exposure time. See adjacent image www.flickr.com/photos/124244349@N07/48069056958/in/photos... for comparison.
Tech Stuff: Questar 3.5" telescope at native 1400mm focal length (f/16)/QHY 163 mono camera/guided/8 second exposures captured in SharpCap live stacks/ L 14 min; R 65 min; G 36 min; B 55 min/Processed with PixInsight and AcDSee. Captured over 5 nights in June, 2019 from my yard in Westchester County, NY.
M13 LRGB 3 hour capture
M13 is a great astro target this time of year and I recently posted an image based on a single night's captures. My Questar telescope has a slow focal ratio -- f/16 -- which leads to big differences in images based on the total amount of capture time. In this case you can clearly see the differences in color and detail for 3 hours versus 35 minutes of exposure time. See adjacent image www.flickr.com/photos/124244349@N07/48069056958/in/photos... for comparison.
Tech Stuff: Questar 3.5" telescope at native 1400mm focal length (f/16)/QHY 163 mono camera/guided/8 second exposures captured in SharpCap live stacks/ L 14 min; R 65 min; G 36 min; B 55 min/Processed with PixInsight and AcDSee. Captured over 5 nights in June, 2019 from my yard in Westchester County, NY.