Right ascension 13h 33m 32.97s
Declination −65° 58′ 26.7″
Distance 3000 ly
Apparent magnitude (V) 8.2, 8.5p
Apparent dimensions (V) 90 × 62 arcsec
Constellation Musca
Physical characteristics
Radius ~1 ly
Notable features A peculiar PN with a binary in the centre
Designations Spiral Planetary Nebula, Gum 47, IC 4274, He2-94, Sa2-95, PK 307-3.1
NGC 5189 (Gum 47, IC 4274, nicknamed Spiral Planetary Nebula) is a planetary nebula in the constellation Musca. It was discovered by James Dunlop on 1 July 1826, who catalogued it as Δ252.[1] For many years, well into the 1960s, it was thought to be a bright emission nebula. It was Karl Gordon Henize in 1967 who first described NGC 5189 as quasi-planetary based on its spectral emissions.
Equipment
GSO 10" f/8 Truss RC Losmandy G11 Mount guided PHD2 Orion Starshoot on 60mm guide scope
QHY 268c one shot colour camera, -10c, . Gain 57 Offset 30, Optolomg L Extreme filter. NINA plate solved and sequenced
Time/Locale
3hrs in 90 lights, 2min subs captured 22-23/03/2023 Bortle 5/6 sky between 09:40pm and 01:00am, Najm Nazm Observatory Kelmscott WA, no moon, no wind cool evening high humidity
Stacked DSS, Processing: PS CS2, CS6
Nice, one of my favourite PN's, I last imaged it 10 years ago and was considering a crack at it again, when I get another particularly good steady night up on the mountain
