Longmore 16 is a infrequented planetary nebula in Scorpius ; magnitude:13.3 ; size: 1.4' ; roundish with slight elongation; doesn't seem to be as dim as the magnitude given, OIII filter works well on this object. A 12th magnitude star sits right on it's northern edge. I used a 8mm Ethos at 198x with a Lumicon OIII Gen 3 filter with my 14.5Starstructure Dob f/4.3
Infrequented planetary nebula (Longmore 16)
Posted 29 June 2020 - 04:09 AM
very nice observation, thank you for giving all the useful details to flush out that dim PN
Clear sommer sky,
Posted 29 June 2020 - 01:05 PM
Fine sketch of Infrequented Planetary Nebula (Longmore 16) .