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Digitized Sky Survey (DSS) Image Information for NGC 4945 | |||
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DSS Acknowledgement , DSS Copyright Notice | DSS Image Generation: 1st Generation DSS Image | ||
Image Center (2000): 13h 05m 27.1s; -49º 28' 03" | Image File Name: n4945.jpg | ||
Image Size (arcminutes): 20' x 20' | Image Size (pixels): 353 x 353 | ||
Original NGC Catalogue Data for NGC 4945 | |||
General Catalogue Designation: 3386 | William Herschel Designation: ... | ||
John Herschel Designation: 3459 | Other Observers: Dunlop 411 | ||
Right Ascension (Equinox 1860): 12h 57m 14s | Annual RA Precession (Equinox 1880): +3.46s | ||
North Polar Declination (Equinox 1860): 138° 32.1' | Annual DEC Precession (Equinox 1880): +19.4" | ||
Summary Description: B, vL, vmE 38.7° | |||
Notes: … | Comments: … | ||
Discovered by: James Dunlop (1793 - 1848) | Year of Discovery: 1826 | ||
Telescope Aperture (Inches): 9 | Telescope Type: Reflector | ||
Understanding the 'Summary Description': Summary Description Abbreviations List | |||
Contemporary/Current Data for NGC 4945 | |||
Right Ascension (2000): 13h 05m 27.1s | Declination (2000): -49º 28' 03" | ||
Object Type: Galaxy | Object Classification: Sc-Irr | ||
Constellation: Centaurus | Position Angle: 43 ° | ||
Visual Magnitude: 8.9 | Surface Brightness: 13.5 | ||
Blue Magnitude: 9.4 | Object Size: 20.0'X3.8' | ||
Also Cataloged As: | ESO 219-G024, h 3459, GC 3386, AM 1302-484, IRAS 13025-4911, PGC 45279, LGG 344-001 | ||
Catalogue Notes: Prominent in group. | |||
Book / Chart References for NGC 4945 | |||
Luginbuhl & Skiff (Page): 68 | Burnham's (Volume : Page): ------ | ||
Uranometria 2000: 402,429 | Herald-Bobroff Astroatlas: C-83,C-84,D-32 | ||
Microsky: N/A | GSC Small Region Number: 8254 | ||
POSS Blue Plate #: N/A | POSS Red Plate #: N/A | ||
Database Update Level: 2 (Complete) | |||
Contemporary Visual Observation(s) for NGC 4945 | |||
NGC 4945 = ESO 219-024 = LGG 344-001 = PGC 45279 13 05 27.5 -49 28 06 V = 8.6; Size 20.0x3.8; SB = 13.2; PA = 43d 13.1" (2/19/04 - Costa Rica): beautiful, huge edge-on spiral oriented SW-NE. Appears ~15'x2' at 166x with tapering tips which fade out towards the ends of the extensions. There is only a broad concentration with gently bulging core, although the surface brightness was somewhat irregular or mottled due to dust. The galaxy fades a bit to the SW of the core and then brightens slightly further SW. The NE extension seems a bit splotchy or mottled. I was very surprised the view from Costa Rica was a bit better than from Bargo, outside of Sydney, Australia, with a similar aperture. 12" (6/29/02 - Bargo, Australia): this long edge-on spiral is fairly bright and broadly concentrated with a slightly bulging core, extending SW-NE ~14'x2.5'. The surface brightness is relatively uniform with a weak central brightening and dimming towards the tips. Set in a rich star field peppered with faint stars. Member of the Centaurus Group including M83 and NGC 5128 and is reddened by dust within our galaxy. This galaxy is comparable in dimensions to N4565 although the dust lane on the south edge was not evident. Located just N of a line connecting mag 4.8 Xi 1 Centauri 18' ESE and mag 4.3 Xi 2 31' SE. N4976 is situated 30' E. | |||
Data Sources Used to research NGC 4945 | |||
[NGC] New General Catalogue / [IC] Index Catalogue (Dreyer - 1888, 1895, 1908) [OHCDSO] Observing Handbook and Catalog of Deep-Sky Objects (Luginbuhl & Skiff - 1990) [GD-NGCDDB] NGC Discoverer's Database (DeLange - 1987 to 2006) [IRAS] IRAS Survey (NASA - 1989) [ESO] The ESO Uppsala Survey of the ESO(B) Atlas (Lauberts - 1982) [RE-AZDB] The Arizona Database®, V15.5 (Erdmann - 1987 thru 2006) [HC-PPL] NGC/IC Accurate Positions List Database (Corwin - 1996 thru 2006) [SG-NGCO] NGC/IC Observations Database (Gottlieb - 1998 thru 2006) [PGC] Principle Galaxy Catalog (Paturel et al. - 1989, 2003) [MOL] Master List of Nonstellar Optical Astronomical Objects (Dixon & Sonneborn - 1980) [DSS] Digitized Sky Survey - 1st (102 CD-ROM) and 2nd (Web Site) Generation (STScI - 1994) [NED] NASA's Extragalactic Database (NED) located at http://nedwww.ipac.caltech.edu/ | |||
Additional Notes | |||
• 1st generation images were generated from the 102 CD-ROM version of the Digitized Sky Survey (DSS) • 2nd generation images were generated at the DSS web site located at http://archive.stsci.edu/cgi-bin/dsswin • Luginbuhl & Skiff page numbers are from 'Observing Handbook and Catalogue of Deep-Sky Objects' by Christian B. Luginbuhl and Brian A. Skiff, produced by Cambridge University Press • Burnham's refers to 'Burnham's Celestial Handbook' in three volumes produced by Dover Publications, Inc. • Uranometria 2000 chart numbers are for those printings authored by Tirion, Rappaport & Lovi, and are not for the most recent printings authored by Tirion, Rappaport & Remaklus in which the charts were re-numbered, all of which were and/or are produced by Willmann-Bell, Inc. • The Herald-Bobroff Astroatlas is by D. Herald and P. Bobroff of Canberra, Australia and is produced by HB2000 Publications • Microsky® is the microfiche rendition of the Palomar Observatory Sky Survey (POSS) produced by Deen Publications (P.O. Box 867088; Plano Texas 75086) • POSS refers to the Palomar Observatory Sky Survey produced by The National Geographic Society in conjunction with The California Institute of Technology • All DSS image annotation was performed by Robert E. Erdmann, Jr., and is ©Copyright 1996 through 2008 by Robert E. Erdmann, Jr. - All rights reserved • All product names, trademarks, and copyrights are the property of their respective owners • Contemporary/Current Data for this object was hand collected and entered from the data sources listed in the "Data Sources Used" section of this table above.- Robert E. Erdmann, Jr. |
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