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 1549 (2,861 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 1549

NGC 1549, AM 0414-554, ESO 157-16, LEDA 14757, SGC 041439-5542.9, Bennett 23, h 2629, GC 834

RA: 04h 15m 45s
Dec: −55° 35′ 31″

Con: Dorado
Ch: MSA:458, U2:420, SA:24

Ref: SIMBAD

(reference key)

Type: galaxy (in group), E/S0

Mag: B=10.87, V=9.94

Size: 4.677′ x 3.89′
PA: 135°

Historical observations

John Herschel

John Herschel recorded it as "B, R, 40 arcseconds."

Stewart, D. (1908) Ann.Harv.Coll.Obs., 60 (6)

Table IV: RA 13.5min.

Published comments

Shapley (1935)

Ann.Harv.Coll.Obs., 88 (5) - Table II, p 110: Size estimate: 9'.

de Vaucouleurs, G. (1975)

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.

NGC 1566 group

Part of the Dorado cloud complex (NGC 1566, NGC 1433, NGC 1672 groups).

Brightest members: 1566 ( B(0) = 10.09), 1553 ( B(0) = 10.57), 1549 ( B(0) = 11.05), 1617 ( B(0) = 11.40), 1574 ( B(0) = 11.62).

Sandage, A. et al. (1975) Galaxies and the Universe

G. de Vaucouleurs ("Galaxies and the Universe", Chapter 14 - Nearby Groups of Galaxies) notes that the five brightest members of the NGC 1566 group, a part of the Dorado Cloud complex, are NGC 1566, NGC 1553, NGC 1549, NGC 1617 & NGC 1574.

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).

It measures 2.8' across and shines at magnitude 10.9.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 11.0 mag galaxy.

Shobbrook (1966)

Shobbrook (1966, Mon. Not. R. astr. Soc., Vol 131, p351-363) notes that this member of the Dorado Cluster has V = 10.31, B-V = 0.88 and U-B = 0.5. It measures by 1.8 x 1.8.

Photo index

Photo Index by Jim Lucyk: Sky&Tel. 10/74 p227, Ast.Obj.for South.Tel. (Hartung, 1984).

Modern observations

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

Hartung notes: "In this field are two bright nebulae [NGC 1549 and NGC 1553] about 13' apart . . one is round, about 1.5' across with very bright nucleus; the other is elliptical, about 2' x 0.8' in pa 150 deg, strongly concentrated and even brighter. 7.5cm shows these nebulae plainly."

ASV Journal (1971)

ASV Journal Vol 24 No 3 June 1971: "visible at limit in 3-inch 64x."

Brian Skiff

15cm - fntr & NWrn of Messier-br pair @ 80x. involved in 5' triangle incl four

*s m9-12. 140x: gx circ, 2'.5 w/mod sharp concen to vbr sub*ar nuc.

BS, 11Nov1993, LCO.

Contemporary observations

Auke Slotegraaf

1983

In a 15.5-inch telescope at 220x the galaxy looks like a globular cluster, round and diffuse. The galaxies central condensation is slightly off-centre. It lies near some bright stars. The galaxy NGC 1553 lies in the same low-power field.

1997 November 03

1997 November 3/4, Jonkershoek. 11x80 tripod-mounted, seeing 4, transparency 3, darkness 3, lim mag = 6.0 (naked eye, pole) "Fainter of two, the other being NGC 1553. Lies just outside a half-degree triangle. Round glow; seems to be one or more small stars involved close to the galaxy."

1997 November 25

1997 November 25, Jonkershoek. 11x80 tripod-mounted, seeing 4, transparency 3, darkness 3, lim mag = 6.0 (naked eye, pole), very strong SE wind (gale force along the coast) "Two [1549 & 1553] beautiful smudges of nebulous haloes, clearly seen as fuzzy patches while sweeping."

Magda Streicher

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

NGC 1549 Mag 9 size 3

Round, small, bright starlike galaxy. Faint stars in the field. Faint star to the south. Both NGC 1553, NGC 1549 NGC 1546 and IC 2058, visible in my field of view. Last two mention much fainter, together they forms a nice circle around NGC 1553.

(no date)

12-inch f/10 SCT (EP: 2-inch 40mm SW 76x 53' fov; 2-inch 14mm UW 218x 23' fov; 2-inch 8.8mm UW 346x 15' fov)

Slightly round, small and fairly bright with a very bright slightly off-centre nucleus. NGC 1553 (galaxy), also listed as Bennett 24, is situated only 11' arc minutes to the south. More galaxies to the south make it an interesting area to study (218x). The field of view is scattered with numerous faint stars, making it rather exceptional.

Richard Ford

2015, February, 22nd

Location:Perdeberg.

Time:9:40pm.

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 almost has the shape of an out of focus rugby ball at 57x and 75x.This galaxy an oval-like structure in appearance which is well defined.The galactic nucleus of this galaxy is fairly bright and centrally condensed.This galaxy measures 3.7'x 2.4'.Chart No.115,NSOG Vol.3.

2012 January 23. Sun

Location:Perdeberg.

Instrument:12-inch Dobsonian Reflector Telescope.

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.

NGC 1549

--------

Object Type:Galaxy.

First Impression:This object looks like a galaxy.

Location:Dorado.

Time:12:20am.

Chart Number:No.15(Extract taken out of "Atlas of the Night Sky").

Size:26mm Eyepiece:Field Of View:57'/11=5.1'.

20mm Eyepiece:Field Of View:50'/10=5'.

5.1'+5'=10.1'.

10.1'/2=5'.

Size in Arc Minutes:5'.

Ratio:1:4.

Major Axis:5'.

5'/4=1.2'.

Minor Axis:1.2'.

This galaxy is 5'*1.2'.

Brightness:Magnitude 9.9.

Brightness Profile:The central nucleus of this galaxy grows brighter in the centre compared to the far outskirts of this galaxy.

Challenge Rating:Moderately Difficult.

Description

-----------

These two elliptical galaxies has an irregular shape on account that these galaxies are joined to each other as a result of gravitational rift.In fact one can see that these two galaxies are interacting galaxies which is part of the Dorado Group of galaxies.Around the outskirts of these galaxies plenty of areas of even brightness are noticed.

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.