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RA: 04h 14m 36.38s
Dec: −56° 03′ 39.5″
Ch: MSA:458, U2:420, SA:24
Type: galaxy (in group), Sa:
Mag: B=12.5, V=11.57
Size: 3.019′ x 1.621′
John Herschel recorded it as "pB, R or lE, bM to an elongated nucleus." His second observation was recorded as "pB, lE, gbM to an extended nucleus. A double star precedes."
This spiral galaxy is recorded in the NGC as "pretty bright, slightly elongated, gradually brighter towards the middle forming an extended nucleus, double star preceding."
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:
NGC 1546 RA = 4h 12m, Dec 57deg 55min. Bright irregular mass with no spiral structure, but no doubt of the spiral class."
A footnote reads: "Identification with NGC 1546 doubtful"
If the coordinates are assumed to be 1900.0, the precessed position places it very near to NGC 1543.
Ann.Harv.Coll.Obs., 88 (5) - Table II, p 110: Size estimate: 4', 150°.
"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).
(Astrophysical Journal, 202, 563-582) notes that this galaxy is a member of the Dorado Group. Members include NGC 1515, NGC 1533, NGC 1536, NGC 1543, NGC 1546, NGC 1553, NGC 1566, NGC 1574, NGC 1596, NGC 1617 and IC 2056. Possible additional members include NGC 1559, NGC 1602, NGC 1672, NGC 1688, NGC 1703 & NGC 1705
(Sulentic and Tifft 1973) notes that this is a 12.5 mag galaxy.
(1966, Mon. Not. R. astr. Soc., Vol 131, p351-363) notes that this member of the Dorado Cluster has V = 11.72, B-V = 0.87 and U-B = 0.27. It measures 1.3 by 0.4.
15cm - fairly br gx w/dbl* on W @ 80x. 140x: m11,12.5 pair in pa315. gx is
1'.75x1' in pa 135 (parallel to pair) w/occas fntr extns. mod even
concen overall, but stepwise brtning for core, which is broadly concen.
BS, 11Nov1993, LCO.
In a 15.5-inch telescope at 220x the galaxy is shown to lie near a triangle of stars. Averted vision is needed to see it easily. There is no nuclear brightening, and no detail is visible. It appears as a diffuse elongated glow. When stars are included in the field, it is more difficult to see the galaxy than when the stars are moved out.
12-inch f/10 SCT (95x 218x)
What a lovely open spiral in a large oval impression situated in a star field that compliments the galaxy.
Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.
This galaxy has a slightly elongated shape with small faint extensions on both sides seen at both 57x and 75x and that the nucleus of this galaxy is centrally condensed.The nucleus of this galaxy somewhat grows slightly brighter compared to the far outskirts of this galaxy.There are some darker areas within the far outskirts of this galaxy while I have found a few areas of uneven brightness towards the bright regions of this galaxy.This galaxy measures 5.7'x 1.9'with PA NNW-to-SSE.Challenge Rating:Difficult.Chart:No.115,NSOG Vol.3
The Messier objects
The Bennett objects
The Caldwell list
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