Large Magellanic Cloud

LMC 6 Supergiant Shell

Steve Gottlieb’s Observations

S-L 105 = KMHK 280

04 55 24.3 -68 32 27; Dor
V = 12.3; Size 1.0′

25″ (10/17/17 – OzSky): at 244x; moderately bright, fairly small, round, 35″ diameter. Contains a relatively large bright core but there was no resolution. Situated nearly at the midpoint of NGC 1732 13′ SW and NGC 1770 13′ NE. LMC Supernova remnant N86 lies 6′ SSE.

Notes: Robert Innes discovered S-L 105 on plates taken with the 10-inch Franklin-Adams camera before 1924 at the Union Observatory in Johannesburg, South Africa. It was included in his 1924 “Catalogue of Clusters and Nebulae Near the Large Magellanic Cloud” and called a “four-armed spiral.” Shapley listed it as #12 of 166 LMC clusters found on Bruce plates in the 1931 Harvard College Bulletin #884 (“Notes on the Large Magellanic Cloud, IV. The Galactic Clusters.”

Shapley-Lindsay: 40″ diameter; “Round, outer resolved”

 

S-L 116 = KMHK 315

04 56 25 -68 48 17; Dor
V = 12.3; Size 0.8′

18″ (4/6/16 – Coonabarabran, 236x): fairly bright glow picked up while observing NGC 1785 (Milky Way asterism) located 12′ E. Appears unresolved and perhaps 30″ diameter. A mag 10.2 star (HD 268799) is just 1.7′ SE. S-L 117 lies 10′ S.

Notes: Robert Innes discovered S-L 116 on a photograph taken with the 10-inch Franklin-Adams camera of the Johannesburg (Union) Observatory. It was catalogued in the 1924 “Catalogue of Clusters and Nebulae Near the Large Magellanic Cloud” as a “nebulous patch” and “small nebula.” Shapley listed it as #14 of 166 LMC clusters found on Bruce plates in the 1931 Harvard College Bulletin #884.

Shapley-Lindsay: 40″ diameter; “Partly very condensed.”

 

LMC-N92B = H-S 74 = KMHK 339 = LH 11 = DEM L 38

04 57 00 -68 45 00; Dor
Size 0.55′

18″ (4/6/16 – Coonabarabran, 236x): moderately bright LMC cluster/nebula, fairly small, round, 0.4′ diameter, smooth glow except for a single resolved star. A small nebulous patch, ~15″ diameter, is ~1.5′ ENE and is the brightest knot in emission nebula N92. Picked up 10′ NW of NGC 1785, a Milky Way asterism. Situated along the SW side of supergiant shell LMC 6.

 

LMC-N92A = DEM L 38

04 57 14.5 -68 44 32; Dor
Size 1.5′

18″ (4/6/16 – Coonabarabran, 236x): a small nebulous patch, ~15″ diameter, was seen ~1.5′ ENE of the nebulous (N92B) cluster H-S 74. N92A is the brighter of the two small knots forming N92. Picked up 10′ NW of NGC 1785, a Milky Way asterism. On the DSS, this is a very small knot, surrounded by fainter nebulosity extending over 1.5′. Situated along the SW side of supergiant shell LMC 6.

 

S-L 176 = KMHK 448

05 01 29 -68 42 44; Dor

18″ (4/6/16 – Coonabarabran, 236x): this LMC cluster was picked up 16′ NW of NGC 1785, a Milky Way asterism superimposed on the LMC. It appeared fairly faint, round, 20″, even surface brightness. It is situated midway between a mag 10.7 star 3.6′ SSW and a mag 11 star 3.4′ NNE.

Notes: Robert Innes discovered S-L 176 on a photograph taken with the 10-inch Franklin-Adams camera of the Johannesburg (Union) Observatory. It was catalogued in the 1924 “Catalogue of Clusters and Nebulae Near the Large Magellanic Cloud” as a “small nebula with variable star.”

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