Imaged the galaxy M64 on the nights of May 26 and June 18, 2023.  M64 has an apparent magnitude (v) of 8.5 and an apparent size of 10.7 × 5.1 arcsec. 

Per Wikipedia (reference:https://en.wikipedia.org/wiki/Black_Eye_Galaxy):  "The Black Eye Galaxy (also called Sleeping Beauty Galaxy or Evil Eye Galaxy and designated Messier 64, M64, or NGC 4826) is a relatively isolated spiral galaxy 17 million light-years away in the mildly northern constellation of Coma Berenices. It was discovered by Edward Pigott in March 1779, and independently by Johann Elert Bode in April of the same year, as well as by Charles Messier the next year. A dark band of [url=mw-redirect=https://en.wikipedia.org/wiki/Interstellar_dust]absorbing dust[/url] partially in front of its bright nucleus gave rise to its nicknames of the "Black Eye", "Evil Eye", or "Sleeping Beauty" galaxy.  The morphological classification in the De Vaucouleurs system is (R)SA(rs)ab,=reference[4] where the '(R)' indicates an outer ring-like structure, 'SA' denotes a non-barred spiral, '(rs)' means a transitional inner ring/spiral structure, and 'ab' says the spiral arms are fairly tightly wound.=reference[13] Ann et al. (2015) gave it a class of SABa,=reference[14] suggesting a weakly barred spiral galaxy with tightly wound arms.M64 is a type 2 Seyfert galaxy=reference[15] with an HII/[url=mw-redirect=https://en.wikipedia.org/wiki/LINER]LINER[/url] nucleus." 

Imaged with a William Optics GT81 at F4.7 (382 mm focal length) using Flat6A II field flattener/0.8x reducer, UVIRcut filter, and ZWO ASI 533MC Pro.  Total integration time of ~2.5 hours: 100 subs at Gain = 100 with an exposure time of 120 sec.

Pre-processed using Pixinsight's weighted batch pre-processing script (WBPP) to perform calibration, debayering, registration, local normalization, and integration.  Background removed using GradXpert.  Initial post-processing in Pixinsight:  spectrophotometric color calibration, blur x terminator, and noise x terminator.  Unscreened stars using StarXTerminator, then further processed the starless and stars images separately:  generated rangemask and applied for subsequent steps for starless image, masked stretch, generalized hyperbolic stretch, HDR transformation using EasyHDR script, local histogram transformation, and color saturation adjustment, and lastly re-screened stars using PixelMath. 

Original version:  M64 OSC RGB image

Rev B:  M64 OSC RGB image, starless version

Rev C:  M64 OSC RGB image, inverted version