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RA: 05h 39m 39.3s
Dec: −69° 44′ 38″
Ch: MSA:495, U2:445, SA:24
Ref: SIMBAD, NGC/IC
Type: bright nebula
Mag: B=?, V=?
Size: 15′ x 11′
Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "The north preceding of the four principle nuclei of the nebula of Plate III, fig. 4." Herschel's sketch shows a complex object with four condensations or nuclei, involved in nebulosity. The four objects in this grouping are NGC 2078, 2079, 2083 and NGC 2084.
Henize (Catalogues of Hydrogen Alpha Emission Stars and Nebulae in the Magellanic Clouds, Astrophysical Journal Supplement 2, 1956, p315) notes that it is equivalent to his nebula LH N 120-159F. He says it measures only 48 x 47 arcseconds, is round with a slightly irregular edge and some structural detail.
Shapley and Lindsay ("A Catalogue of Clusters in the Large Magellanic Cloud", Irish Astronomical Journal, Vol. 6, 1963) group NGC 2078, 2083 and NGC 2084 together, giving the dimensions as 3.4' x 2.3'. They remark "scattered bright stars in dense nebulosity."
The RNGC (Sulentic and Tifft 1973) notes that this is a cluster+nebulosity in the LMC.
15cm - 195x: fairly f neb in vsm sparse cl 30" diam. wk UHC enhancement. BS,
object in N2078/79 etc. group
15cm - sm f 20" spot in center of box. mild UHC enhancement. 195x. BS,
The Messier objects
The Bennett objects
The Caldwell list
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