Just checked my old entry with the former 20-inch under good transparency of a Pre-Alps location. I noted:

faint, filled disk; small and nearly round, perhaps somewhat NE-SW elongated; does not respond well on [OIII] and Hß filters; CS steadily visible with averted vision; faint, small diffuse ring around central ring-like disk

sketch: 20", 575x, NELM 6m5+, Seeing III
NGC2242.jpg
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