NGC 1981
DSS image of NGC 1981
Overlaid DSS image of NGC 1981, 60' x 60' with north at top and west to the right

Aladin viewer for the region around NGC 1981

Type  Open Cluster w/Nebulosity
Magnitude  4.6
Size  25'
Right Ascension  5h 35' 9.6"  (2000)
Declination  4° 25' 30" S
Constellation  Orion
Description  Cl, vB, lRi, st L, sc
Classification  III 2 p n
Observing Notes

Andrew Cooper
Jan 13, 2018    Kaʻohe, Mauna Kea, HI (map)
28cm f/10 SCT, NexStar 11" GyPSy @ 80x
Seeing: 7 Transparency: 7 Moon: 0%

A large, bright cluster just north of the great nebula of Orion, a dozen or so bright magnitude 5-7 stars scattered over a 10' area, appears to be a continuation of NGC1977 without the bright nebula amoung the stars

Rev. T.W. Webb
May 19, 1885    Hardwick, Herefordshire, England (map)

Brilliant field, containing Σ750 and Σ743, supra. A grand neighborhood; sweep well over the whole space, from 42 to Iota, which star large apertures involve in a haze, connected by a long faint loop with the Great Nebula.
― Celestial Objects for Common Telescopes, T. W. Webb, 1917

Captain William Henry Smyth
Oct 16, 1835    No. 6 The Crescent, Bedford, England (map)
150mm f/17.6 refractor by Tully 1827

[From entry CCXVII for θ1 Ori...] A delicate double star in the wide-spread cluster on Orion's sword. A 6, lucid white; B 9, pale blue. The principal members of this group of stars, are of the 6th and 7th magnitudes, with some smaller; and from their brightness and disposition form a capital test for the light of a telescope. It was examined by H., and entered on his Catalogue of 1830; whence it may lay claim to being an aggregated and connected assemblage, and, comparatively speaking, not very remote from us.
― A Cycle of Celestial Objects Vol II, The Bedford Catalogue, William Henry Smyth, 1844
Other Data Sources for NGC 1981
Associated objects for NGC 1981
Nearby objects for NGC 1981

Drawings, descriptions, and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

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NGC 1981