Object: Messier 13 or M13, also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of several hundred thousand stars in the constellation of Hercules.
Taken: June 13, 2019
Telescope: Astro-Tech 14” RC (2850mm focal length)
Mount: Paramount ME II unguided
Camera: ZWO ASI1600MC-Pro (cooled to -15C; unity gain) Bin 2×2.
Focuser: Moonlite Nitecrawler
Filters used: Luminance on a ZWO 8 position filter wheel
Exposures: 10×60 sec. for a total exposure time of 10 minutes calibrated with 100 bias frames, 25 dark frames, 32 flat frames with 32 dark-flats
Seeing Conditions:
Processed with PixInsight and Photoshop CC 2019