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Type: galaxy (Seyfert 2), SBa
Mag: B=11.55, V=10.38
Size: 4.57′ x 1.584′
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James Dunlop discovered this object from Paramatta, New South Wales, and included it as No. 518 in his catalogue of 1827. Using a 9-inch f/12 telescope, he described it as "a very faint nebula extended preceding and following, about 1.5' long and 20 or 25 arcseconds broad; a little brighter inthe middle, or rather neaer the N.p. extremity; the S.f. extremity is very ill defined."
Observed by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "a long pB ray, 4' long, psvmbM, elongated in pos 44.7 degrees." On a second occassion he called it "B, pL, vmE in pos 41.9 degrees, pgmbM, 3' long, 20 arcseconds broad, has a star 11m, 2' dist pos from nucleus 12.9 degrees.."
Reynolds, J.H. (1921) The spiral nebulae in the zone –40° to –90° (from the Franklin-Adams Plates). MNRAS, 81, 598.
p 600: "The following spirals call for special description on account of their size:
Spindle with bright nucleus."
Table p 601: 4x1, pa45, "BN"
pF, 4'x1', E 45deg, BN spir., near edge of plate.
de Vaucouleurs, G. (1975) Nearby groups of galaxies. In: Kuiper, G. (ed) Stars and Stellar Systems. Volume 9: Galaxies and the Universe. Chapter 14, p557.
Possible foreground object: IC 5332 (in Sculptor group?)
Brightest members: NGC 7552 ( B(0) = 11.44), NGC 7424 ( B(0) = 11.46), NGC 7410 ( B(0) = 11.61), IC 5267 ( B(0) = 11.65), NGC 7582 ( B(0) = 11.84).
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).
Sandage (1975(Astrophysical Journal, 202, 563-582) notes that this galaxy is a member of the IC 1459 Grus Group. Members include NGC 7410, NGC 7412, NGC 7418, NGC 7421, NGC 7424, NGC 7496, NGC 7531, NGC 7552, NGC 7582, NGC 7590, NGC 7599, IC 1459, IC 5267, IC 5269 & IC 5273.
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads LG,B,S,MINC,BAR SUSP.
Shobbrook (1966, Mon. Not. R. astr. Soc., Vol 131, p351-363) notes that this member of the Grus Cluster has V = 10.87, B-V = 0.93 and U-B = 0.52. It measures 3.6 by 1.2.
Hartung notes: "In a rather barren field this is a large elongated nebula, 5' x 0.8' in pa 45 deg, with pointed ends and rising much to a large elliptical centre; it is a conspicuous object . . 10.5cm shows its form."
Steve Coe, observing with a 13" f/5.6, notes: "Pretty bright, pretty large, much brighter in the middle with a bright nucleus at 165X. This lens-shaped galaxy is elongated 2.5 X 1 in PA 45."
Canterbury: * 1'.7 NNE.
15cm - 2'x1' in pa45. pretty br overall w/broadly brtr center. BS, Slate Mtn.
- nice br spindle @ 80x w.m13 * on N. 140x: 3'.5x0'.8 in pa35, reaching well past m15 * in halo NE (E of maj axis?). mod even concen to fairly br ill-def oval core w/*ings but no sharp nuc. BS, 14Nov1993, LCO.
25cm - br, 3'.5x0'.6 in p45. core rectangular, 0'.7x0'.3, grainy. halo mottly. * or knot on N edge of core, another 1'.5 N. 190x. BS, Slate Mtn.
1997 October 27: Jonkershoek, seeing 3, transparency 3, sky darkness 4, lim.mag. at south pole 6.0 (naked eye), 10.7 (binoculars). 11x80 tripod-mounted. "Not seen. Nearby IC 1459 seen."
16-inch f/10 SCT
Bright, large and elongated in a northeast to southwest direction. It is a spindle galaxy (5x3), getting slowly brighter towards a soft hazy nucleus. The northern end of the galaxy getting thinner and fainter and host a faint star on its tip. Standing out lovely against a relatively faint speckled background. (Mag 10.9; size 5.0' x 2.0'; SB 12.5 mag; PA 41 deg.)
Location:Night Sky Caravan Park,Bonnievale.
Sky Conditions:Whole Milky Way is visible.The sky is clean.
Atmosphere stable with little interference.
This galaxy's diffuse extensions are seen almost edge and that this galaxy's shape is elongated and well defined.The spiral arms of this galaxy has plenty of areas of uneven brightness and I have noticed that the nucleus of this galaxy is brighter compared to the faint extensions of this galaxy.This galaxy measures 7.1'*1.4'together with P.A. North West/South East.Chart:No.140,NSOG Vol.3.
The Messier objects
The Bennett objects
The Caldwell list
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