Nice object off the beaten path Victor.
I visited this guy 15 years ago from my new mountain observing side with good transparency and darkness.
With my former 16-inch I wrote:
without filter, nothing visible in the searching eyepiece (51x) but a hint of a glow with mid sized EP's; good reaction on [OIII] filter, steadily visible as a uniform illuminated round disk at 360x
sketch: 16", 360x, [OIII], NELM 6m5+, Seeing III BV3.jpg home