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NGC 1808 (3,404 of 18,816)

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NGC 1808

NGC 1808, Dunlop 549, AM 0505-373, ESO 305-8, LEDA 16779, MCG-06-12-005, SGC 050559-3734.6, Bennett 31, h 2740, GC 1021

RA: 05h 07m 42.3s
Dec: −37° 30′ 46.2″

Con: Columba
Ch: MSA:396, U2:358, SA:19

Ref: SIMBAD

(reference key)

Type: galaxy (Seyfert 2), Sbc

Mag: B=10.7, V=9.89

Size: 7.079′ x 3.235′
PA: 133°

Image gallery

Sketches  (1)

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Photos  (1)

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Historical observations

Dunlop, James (1828)

Dunlop, J. (1828) A Catalogue of Nebulae and Clusters of Stars in the Southern Hemisphere, Observed at Paramatta in New South Wales. Phil. Trans. Roy. Soc., 118, 113-151. [1828RSPT..118..113D]

James Dunlop discovered this galaxy from Paramatta, New South Wales, and included it as No. 549 in his catalogue of 1827. Using a 9-inch f/12 telescope, he described it as "a faint nebula, about 2.5' long, and fully 1' broad, extended S.p. and N.f.; a very minute star near each extremity, not involved." He observed it twice.

John Herschel

John Herschel recorded it as "B, E, 3' long, 1.5' broad; in a field strongly illuminated by the moon in her first quarter." On a second occassion he called it "B, L, lE, first gradually then psmbM."

Ellery, R.L.J. (1885) Melbourne Observations

Recorded in "Observations of the Southern Nebulae made with the Great Melbourne Telescope".

See the discussion of Lithograph M.3.26 for the details.

Published comments

Sanford (1989) Observing the Constellations

Sanford calls it "cigar-shaped, measuring more than 7' x 4' with a brighter nucleus and an overall magnitude of 11.4."

Helwan Obs. Bulletin No 15 (1915)

F, 4'x1', mE 145deg, B centre, spiral.

de Vaucouleurs, G. (1956)

De Vaucouleurs (1956) "Survey of bright galaxies south of -35° declination", Mem. Mount Stromlo, No. 13. (photographic study, plates taken with the 30-inch Reynolds reflector, 20-inch diaphragm).

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 11.0 mag galaxy. Their coded description reads S,EL,BM,BDDIF ARMS.

de Vaucouleurs, G. et al. (1991) Third Ref. Cat. of Bright Galaxies (RC3)

This galaxy is listed in the "Third Reference Catalogue of Bright Galaxies" as having an outer ring of 6.49 arcminute diameter.

Ryder & Dopita (1993)

Included in the CCD-atlas of Ryder S.D. & Dopita M.A. (1993) "An H-alpha Atlas of Nearby Southern Spiral Galaxies" Astrophys.J.Suppl. 88, 415. They note: "This galaxy is in fact somewhat abnormal, displaying nuclear hot sports and starburst activity rather reminiscent of M82. Optical images reveal dusty filements emanating radially from the nucleur region."

Photo index

Photo Index by Jim Lucyk: Sky&Tel. 2/77 p103, Cat.of South.Peculiar Gal.and Ass. Vol 2 (Arp&Madore, 1987) p8.34.

Modern observations

Hartung, E.J. (1968) Astron.Obj.South.Tel

Hartung notes: "This is another fine interesting field with a long bring elliptical nebula 4.5' x 1.5' in pa 145 deg constrasting well with scattered stars. It has a small bright lengthened nucleus about 20 arcsec across which 7.5cm will show."

Walter Scott Houston

Houston observed this galaxy with 5-inch binoculars: "[NGC 1792] has a neighbour [NGC 1808] 2/3 degree away, very similar in size and shape but a bit fainter."

Clarke, W.P. (1992)

William P. Clarke (San Diego, California, USA) writes in The Webb Society Nebulae and Clusters Section Report No. 10, July 1992: "Bright streak with an elongated nucleus. No dust lanes or other detail seen. (21-inch f/20, x140)."

Bahr-Vollrath, Gerd (1992)

Gerd Bahr-Vollrath (Noosa Heads, Queensland, Australia) writes in The Webb Society Nebulae and Clusters Section Report No. 11, January 1993: "A fairly large and bright spindle. The whole galaxy appears to be mottled. The broad nucleus seems to be broken into fragments of bright patches. (8-inch f/12 SCT)"

Tom Lorenzin

Tom Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "11.2M; 4'x 1' extent; bright, large oblong with very faint outer arms; bright nucleus; SP GAL N1792 is 40' to SW; both are good supernova prospects."

Steve Coe

Steve Coe, using a 13" f/5.6, notes: "Pretty bright, pretty large, elongated 2 X 1 in PA 165, much brighter middle with an almost stellar nucleus at 135X."

Steve Gottlieb

05 07.7 -37 31

17.5: bright, fairly large, small elongated core, long thin arms 4:1 NW-SE.

A mag 14 star is off the NW end. This is a very pleasing galaxy.

8: fairly bright, elongated NW-SE, moderately large, bright core.

Brian Skiff

POSS: m14.0 * 3'.25 NW; m13.0 * 2'.75 SW; m13.5 * 1'.16 NW. implies 15cm size 6'x1'.2. br part of gx in pa140.

ESO: pa133:.

ApJ 151:99 - photo.

L&deV: * 1'.2 W: V=14.04/0.90.

T&B: * at NW end: V=14.4; star at SE end: V=12.8; * NW of center: V=14.0.

15cm - brtr of two parallel gxs in 50x/1.2 deg fld w/N1792. velong in pa145, 6'x1'.5. tips of halo nrly reach m14 * N (S of brtr * that way) and m12.5 * S. m13.5 * 2' NW of core: width approx equal distance to this *. halo has mod broad concen w/some struc parallel to maj axis twd center. core is vthin vmuch brtr streak 2'.5x0'.5 w/vsm oval 10" nuc. this streak lies W of maj axis. 10' N/sl E is un= pair res @ 50x. BS, 17Feb1990, LCO.

25cm - lg, br. elong in nrly same angle as N1792. narrower and longer: 3'.5x1'. mod br nuc and sm core. extensive outer arms [halo].

30cm - elong pa145, 5'x1.5 w/diffuse losfcbr halo. a f *ar nuc vis in an uneven core. m12.5 * jus S of SW side.

Contemporary observations

Gabriel Giust

1995 January 25

8-inch Newtonian, 66x: 1995-01-25 "Observing directly to star 'A', you spot it as a faint patch elongated in the North-South direction. Very very faint." [Gabriel Giust, San Isidro, Argentina]

Magda Streicher

2010 February 9

Location: Polokwane

16-inch f/10 SCT (127x 290x 462x)

A lovely edge-on galaxy neighbouring NGC 1792 around 48arc minutes to the north-east. The thin brighter nucleus slightly off centre towards the north-east, with a much hazier north-western edge.

1997 July 4

Location: Pietersburg South 23o 53. East 29o 28.

Sky conditions: Clear.

Date: 4 Julie 1997.

Field of view: 52.7 arc minutes.

ASSA-DSO - Report J

1808 mag 9 size 7

Elliptical large, bright, extended galaxy with a sudden brighter nucleus. Proceeding to the Southeast. Busy starfield.

(no date)

12-inch f/10 SCT

A beautiful, outstandingly bright, oval shaped galaxy, with a brightness that is evenly spread over its whole surface. With careful observation the nucleus brightens relatively fast to a small compact inner core. With higher magnification (218) a somewhat rougher texture can be discerned. The oval ratio is about 1 to 5 in a northwest to southeast direction. The north side appears somewhat hazy, faint stars can be seen comfy close west of the galaxy. With higher magnification (346x) the whole galaxy appears to be mottled, and some of the parts breaking off in brightness. (Mag 9.9' size 5.2' x 2.3'; SB 12.4; PA 138)

Richard Ford

2015, Sunday, 18th January

Location:Perdeberg.

Time:2:25am.

Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.

Instrument:12-inch Dobsonian.

This galaxy has a spiral shape with two extensions visible at both ends of this galaxy which is seen edge on at both 57x and 75x. This galaxy is also well defined and to note there are areas of even brightness being visible at both extensions of this galaxy. This galaxy measures 5.7'x 3.5'with P.A. NW/SE.Chart No.174,NSOG Vol.1

2009 March 21

Perdeberg

12-inch Dobsonian f5 (EP: 20mm UW, 7mm UW)

Conditions: The fainter parts of the Milky Way are barely visible. Haziness only visible on the horizon. Atmosphere stable with little interference. Limiting Magnitude: 4.9.

NGC 1808 is a bright galaxy that is easy to observe in very dark skies. It is seen as a bright smudge of faint light. It has some spiral structure. It is seen edge-on and is oriented to the South-South West. There are a few faint stars near the galaxy, which has no darker areas or areas of uneven brightness.

Tom Bryant

2010 11 5 4:17:3

Observing site: Fall Star Party

Telescope: C-11

[5h 7m 42s, -37 31' 0"] A lovely, edge on spiral with an elongated nucleus. Fairly bright. B:Sb.

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