Celestron C11 (standard, not Edge)
Meade Flip Mirror
Televue 2x barlow (yielding f/21)
Precise Parts spacer
ZWO Atmospheric Dispersion Corrector
ZWO ASI224 Camera with Astronomik UV/IR cut filter (~0.1 arcsecs/pixel)
Captured in Firecapture v2.6
Stacked in AutoStakkert! 3.1.4 (setting Advanced>Experimental Features>Vertical and Horizontal Blur to 1.5 pixels each to avoid aligning on grid patterns)
Sharpened with Multiscale Linear Transform in Pixinsight
Captured 29 Nov 2020