Good morning, this is a ASOD submission:
Object Name: NGC 6572/Blue Racquetball
Object type: Planetary nebula
Location: Cittadella (Italy)
Date: June 27, 2011
Media: graphite pencil, white paper, later inverted and colored in Gimp
Instrument: 120 mm achromatic refractor (f/8.3)
Eyepiece: Planetary HR 4 mm
Conditions: Clear with some light pollution
Best Regards,
Massimo Zecchin
Massimo,
I really like this sketch of yours. You got the appearance spot on.
Frank 🙂