sponsored by psychohistorian.org

DOCdb

Deep Sky Observer's Companion – the online database

 

Welcome, guest!

If you've already registered, please log in,

or register an observer profile for added functionality.

List:

log in to manage your observing lists

 browse:

 

 position:

 

 next:

 

 options:

summary

rename

prune

trim

remove

close

copy

combine

plan

bookmark

load

new

delete

marathon

favourite!

Full database:

Entire DOCdb database of 18,816 objects.

 browse:

 position:

NGC 1980 (3,758 of 18,816)

 next:

oc gc pln bn dn gx gxcl ast aka lost

Object:

list

bookmark

finder chart

altitude today

altitude (year)

 search:

½°, , in DOCdb


Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/yivumoo/public_html/show_object.php on line 167

show browsing

NGC 1980

NGC 1980, Ced 55f, Cl Collinder 72, C 0532-059, LBN 977, Ocl 529.0, COCD 76, V 31, h 361, GC 1183

RA: 05h 35m 24s
Dec: −05° 55′ 0″

Con: Orion
Ch: MSA:278, U2:270, SA:11

Ref: SIMBAD, Collinder (1931), DAML02, Archinal&Hynes (2003)

(reference key)

Type: open cluster, 33mn

Mag: B=?, V=2.5

Size: 20′
PA: ?

Historical observations

William Herschel (c.1784)

Synonyms:H V-031

Discovered in 1786 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "Iota Orionis with its neighbouring stars are involved in eF milky nebulosity to a great extent."

Published comments

Pickering, E.C. (1890)

Detection of new nebulae by photography. Annals Harv Coll Obs., 18, 113. Bibcode: [1890AnHar..18..113P]

Photographs taken with the Bache telescope, a photographic 8-inch f/5.5 doublet, covering 10 degrees square, were examined by Mrs M Fleming with a magnifying glass.

Table 1: List of nebulae (p115)

No. 11 "A nebulous band extends south preceding from DM -6 1234 for about 6'. Plate 2325 shows that the whole of this region is included in No. 12 [NGC 1976, M42]. Dreyer 1980 is near, and perhaps refers to this object."

Cederblad, S. (1946) [VII/231]

Ced 55f (NGC 1980)

Position (1900): RA 5 30.5, Dec - 5 58

Star: Cl (Mp=3.0, , SpT=O8, B)

Spectrum of nebula: emission spectrum (inferred from sp.t. of exciting star)

Classification: Nebulous cluster (milky neb cover the clusters, eg NGC 1976)

Size: 14'x14'

Notes: "Ced 55 f = NGC 1980 = GC 1183 = h 361 = H V 31. Disc. 1786. WP 67. (30, 114, 174, 194, 304, 558, 578, 630 Pl 34, 631.). R. This is the nebula around {iot} Orionis = -6 1241 = HD 37043 = Boss 6937. Ced 55: The Orion region. History and bibliography: (118, 119, 186, 188, 191, 276, 352). The nebulous groundwork and the exterior nebulosities: (20, 21, 26, 53, 58, 78, 142, 143, 186, 191, 206, 207, 278, 279, 281, 282, 289, 305, 312, 438, 480, 519, 540. 541, 593, 594, 595, 620, 625, 628, 630 Pl 34, 663, 675, 715, 726 No 41, 769, 782, 802, 818). R. It is shown on several photographs, e.g. (630) Pl 34, that the whole region of the constellation Orion is filled up by vast masses of nebulosity. As is well known, there are several condensation which seem to stand out from the general background, and which have been separately discovered and studied. Such subnebulae, will be individually discussed below. Taken as a whole, No 55 of the catalogue should be classified as C. 2 in addition to the separate classes of the subnebulae."

Lynds, B.T. (1962)

Lynds, B.T. (1962) Catalogue of dark nebulae. Astrophys.J.Suppl.Ser. 7, 1-52. [also: computer datafile: VII/7A]

Sulentic & Tifft (1973)

(Sulentic and Tifft 1973) notes that this is a 2.5 mag cluster associated with nebulosity.

Bailey, S.I. (1908)

"neb; 2 bright and several faint * in neb."

Bailey, S.I. (1908) A catalogue of bright stars and nebulae. Ann.Harv.Coll.Obs., 60(8), 199.

Modern observations

Forbes, Le (1993)

Forbes (Stoke, St. Mary Bourne, Hampshire) observing from Siding Spring, Australia, writes in The Webb Society Nebulae and Clusters Section Report No. 11, January 1993: "Surrounds Iota Orionis. Most of the nebulosity is to the east of the star, with a bright patch to the north-west. Comma-shaped. (12.5-inch, x76, Seeing A I-II)"

Ancient City Astron.Club (1980)

described as "31' south of M42, 14'x14'. Visibility of the nebulosity surrounding bright field stars will be enhanced by using averted anmd by sweeping slowly across the field. A hint of nebulosity is evident using this technique, surrounding iota Ori. Field stars are a brilliant colour of blue-white. Magnitude hard to estimate. 8-inch, 48x."

Tom Lorenzin

Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "Iota ORI, mag 3.0, 11.5" separation @ PA 141; 3-7M; 0.5 degree S of the "Trapezium" ( Theta ORI); blue-white/yellow; faint nebulosity surrounding Iota ORI is N1980 (H31-5); 10' to ESE is tight, unequal DBL ST, Struve-754 (5" separation @ PA 287; 5.7-8.9M); worth looking for."

Steve Coe

Steve Coe, using a 13" f/5.6, notes: " Faint, large, irregular, not brighter in the middle at 100X. This nebula surrounds Iota ORI, the end star on the sword of Orion. If you are like me, the first time you looked at NGC 1980, you didn't know that you were looking at an object that has a seperate designation from the Great Orion Nebula."

Steve Gottlieb

OCL-529 & Lund 189

05 35.4 -05 54

13: very faint, large nebulosity of low surface brightness surrounding Iota Orionis (V = 2.8). Very difficult to distinguish from glare of Iota. M42 lies 30' N.

Favourite lists

Lacaille's catalogue

The Messier objects

Dunlop's catalogue

The Bennett objects

The Caldwell list

Named DSOs

Object search

First search phrase

    and

Second search phrase

Type of object to include:

open cluster
globular cluster
planetary nebula
bright nebula
dark nebula
galaxy
galaxy cluster
asterism & stars
unverified/lost
nova

The Bug Report

DOCdb is still in beta-release.

Known issues, feature requests, and updates on bug fixes, are here:

> Bug Report

Feedback

Found a bug? Have a comment or suggestion to improve DOCdb? Please let us know!

> Contact us

Help!

DOCdb is a free online resource that exists to promote deep sky observing.

You could help by sharing your observations, writing an article, digitizing and proof-reading historical material, and more.

> Find out more

Everything on DOCdb.net is © 2004-2010 by Auke Slotegraaf, unless stated otherwise or if you can prove you have divine permission to use it. Before using material published here, please consult the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 License. Some material on DOCdb is copyright the individual authors. If in doubt, don't reproduce. And that goes for having children, too. Please note that the recommended browser for DOCdb is Firefox 3.x. You may also get good results with K-Meleon. Good luck if you're using IE. A successful experience with other browsers, including Opera and Safari, may vary.