Distance: 22.2 kly
https://en.wikipedia.org/wiki/Messier_13

Equipment configuration and exposure data:

Mount: Orion HDX110 German equatorial mount controlled by TSXPro (Software Bisque) via EQASCOM
Telescope: Celestron RASA 11 V2. 11" f/2.2 Rowe-Ackermann Schmidt Astrograph, 620mm FL
Imaging camera: ZWO ASI2600MC Pro. Gain 100; Offset 21; Filter: Optolong L-Pro. Image capture scale: AS/P=1.238" (i.e., unbinned). Resized to 50% for display.
Image capture software: Software Bisque TSXPro Camera Addon
Exposures: 9 @ 60s, beginning 03/19/2021 02:56:01.720 AM MST. Calibration: 0 bias frames, 0 darks, 0 flats; Autoguided.
Guide camera: ZWO ASI120MM Mini. Autoguide software: PHD2 Guiding 2.6.9dev3. Tracking: 0.46" Total RMS.
Post processing software: ImagesPlus6.5; LuminarAI from SkyLum; ThumbsPlus Pro 10.

Source image: 20210319_M13_CombExcAvgIP-ddp-LumAI-TPadj2.tif