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NGC 2185 (4,114 of 18,816)

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NGC 2185

NGC 2185, Ced 70, DG 95, LBN 213.86-11.90, LBN 997, VDB 73, Magakian 182, IV 20, h 383, GC 1375

RA: 06h 11m 0s
Dec: −06° 13′ 36″

Con: Monoceros
Ch: MSA:276, U2:272, SA:11

Ref: [2003A&A...399..141M]

(reference key)

Type: reflection nebula

Mag: B=?, V=?

Size: 2′ x 2′
PA: ?

Historical observations

William Herschel (c.1784)

Synonyms: H IV-020

Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "a star of the 11 or 12 mag, affected like the foregoing [NGC 2170: 'with milky chevelure, irregularly elliptical'], but vF."

Burnham, S.W. (1894)

Publ.Lick.Obs. Volume 2."Observations of Nebulae with the 36-inch Refractor of the Lick Observatory", p 168.

[Noticed while observing 2182]

.. closely follows [2183] but is too large to be seen to any advantage with the lowest micrometer eye-piece, and its extent could not be properly estimated. The brightest part of it seems to be about a star 10-11th magnitude.

Published comments

Helwan Obs. Bulletin No 21 (1920)

pF, pL, ? gaseos, around BD-6° 1440; four other stars, all very faint, are involved, also there is a dark rift.

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

Ced 70 (NGC 2185)

Position (1900): RA 6 6.2, Dec - 6 11

Star: Anon (Mp=12.9, V=12.5:, SpT=B6)

Spectrum of nebula: continuous spectrum (observed)

Classification: Neb associated with mainly one star (which may be multiple) - star surrounded by a neb envelope without conspicuous structure (eg. lambda Scorpii)

Size: 2.5'x2.5'

Notes: "NGC 2185 = GC 1375 = h 383 = H IV 20. Disc. 1784. (114, 153, 296, 304, 366, 578, 631)."

Lynds, B.T. (1962)

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

Dorschner & Gürtler (1963)

Untersuchungen uber Reflexionsnebel.

DG 95

= NGC 2185, Ced 70

Pos (1950.0) 06:08.6, −6:11

Size: 2x2 (blue), 2x1 (red).

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a diffuse nebula.

Magakian T. Yu. (2003)

= DG 95, VdB 73, N2185, GN 06.08.7, Ced 70

Class: C (reflection neb)

Photo index

Photo Index by Jim Lucyk: Vehrenberg's Atlas of Galactic Neb-1 p88.

Modern observations

Tom Lorenzin

Tom Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "11.5M; 2' diameter; faint nebulosity includes N2183-4, very, very faint to W; use N-filter and high-x."

Ancient City Astron.Club (1980)

Listed by the Herschel Club, described as "mag estimated at 11, bright, fuzzy, concentrated area, situated with NGC 2183 and NGC 2184 in field. 8-inch, 96x."

Steve Coe

Steve Coe, observing with a 13" f/5.6, notes: "in the same field [with NGC 2183] near Beta Mon. Even at a very dark site on a night I rated 7/10 for seeing and transparency there is not much here. At 100X in the 13" there are several fuzzy stars in a field that is noticably void of stars compared to the nearby Milky Way. 2185 has star in the center of pretty faint and round nebula, 2183 is dimmer and has no star. The UHC filter does not help."

Contemporary observations

Richard Ford

2011 January 8th, Saturday

Location:Perdeberg.

Instrument:12-inch Dobsonian Telescope.

Eyepieces:26mm Super Wide Field Eyepiece.

20mm Ultra Wide Field Eyepiece.

Sky Conditions:The fainter parts of the Milky Way are barely

visible.

Transparency of the Sky:Haziness only visible on the horizon.

Seeing:Atmosphere stable with little interference.

Limiting Magnitude: 4.9.

1.NGC 2185

1.1.Object Type:Nebula.

1.2.First Impression:This object looks like a cloud of delicate wisps of gas.

1.3.Location:Monoceros.

1.4.Time:11:00pm.

1.5.Chart Number:No.54(Extract taken out of "Herschel 400 Observing Guide").

1.6.Size:26mm Eyepiece:Field Of View:57'/10=5.7'.

20mm Eyepiece:Field Of View:50'/9=5.5'.

5.7'+ 5.5'=11.2'.

11.2'/2=5.6'.

1.7.Brightness:Magnitude 11.2.

1.8.Brightness Profile:This nebula's outer edges are very faint while towards the centre of this nebula it is still very faint.Therefore this nebula is very faint all over.

1.9.Challenge Rating:Noticeable.

1.10.Description

-----------

When I observed this nebula surrounding a bright star,I

have found that this nebula is broken into patches of

light.

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