I shot M13 in 2022, about a year and a half into my astrophotography journey. This is 7 hr 57 min, 90 sec. exposures (RGB: 124 subs, L: 194 subs), gain 100, temp. -10 C.

ASI2600MC Pro, IDAS LPS D3 filter (RGB); L with ASI2600MM Pro, both RGB and L imaged with my WO FL156mm, CEM120