Galaxy NGC 300

NGC 300
NGC 300: Galaxy in Sculptor; Newton-Astrograph 305 mm f/4.6; DeepSkyPro 2600; LHaRGB 13.6h; VdS Remote Observatory, Namibia; © 2023 Eduard von Bergen [29]
NGC 300
NGC 300: Spiral galaxy in Sculptor; TEC APO 140 ED refractor f=980 mm; SBIG STT-8300 SG; Alt-6 ADN mount; L 150 min; R 60 min; G 40 min; B 60 min; -40 °C; Farm Kiripotib, Namibia; © 6 July 2013 Hansjörg Wälchli [46]

History

This galaxy was discovered by Scottish astronomer James Dunlop on 5 August 1826 using his 9 inch selfmade speculum reflector at Paramatta in New South Wales. He observed it three times, listed it as number 530 and noted: «A pretty large faint nebula, irregular round figure, 6' or 7' diameter, easily resolvable into exceedingly minute stars, with four or five stars of more considerable magnitude; slight compression of stars to the centre.» [50]

John Herschel observed this galaxy from South Africa and listed it as h 2359. His first observation was during sweep 486 (1 September 1834). He noted: «bright; very large; very gradually much brighter towards the middle; very much extended; of irregular figure; 8' to 10' long; 3' or 4' broad; has subordinate nuclei.» Few days later during sweep 488 (4 September 1834) he observed it again and noted: «faint; very large; very gradually brighter towards the middle; 4' long, 2' broad; has another neb attached.» Three years later he observed it again during sweep 803 (30 december 1837) and noted: «A large oval nebula containing 3 stars. [N.B. Mr Dunlop's nebl 530 is described by him as easily resolvable into very minute stars. Its identity with this is therefore very doubtful.]» [11] In Herschels «General Catalogue» the nebula is listed as GC 169. [467] Dreyer then added it as NGC 300 to his «New General Catalogue» published in 1888. [313]

Physical Properties

Revised+Historic NGC/IC Version 22/9, © 2022 Dr. Wolfgang Steinicke [277]
Designation NGC 300
Type Gx (Scd)
Right Ascension (J2000.0) 00h 54m 53.3s
Declination (J2000.0) -37° 41' 03"
Diameter 19 × 12.9 arcmin
Photographic (blue) magnitude 8.7 mag
Visual magnitude 8.1 mag
Surface brightness 14.3 mag·arcmin-2
Position Angle 111°
Redshift (z) 0.000480
Distance derived from z 2.03 Mpc
Metric Distance 1.970 Mpc
Identification, Remarks h 2359; GC 169; ESO 295-20; MCG -6-3-5; AM 0052-375; IRAS 00528-3758

Finder Chart

Be careful when trying to observe the galaxy NGC 300 from Switzerland. The mirror may fall out from your Dobsonian. With a declination of -37.7° in the constellation Sculptor it just reaches about 5° above southern horizon during September to November. Because the earth is round, for each 111 km more south the galaxy rises 1° higher above the southern horizon. On 7 October it in opposition with the Sun and is therefore highest in the sky at local midnight.

Finder Chart Galaxy NGC 300
Galaxy NGC 300 in constellation Sculptor. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. [149, 160]

Objects Within a Radius of 25°

References

  • [11] «Results of astronomical observations made during the years 1834, 5, 6, 7, 8, at the Cape of Good Hope ... : being the completion of a telescopic survey of the whole surface of the visible heavens, commenced in 1825» Herschel, John F. W.; London : published by Smith, Elder and Co., 1847; DOI:10.3931/e-rara-22242
  • [29] Astrobin: AstroEdy's Gallery; astrobin.com/users/AstroEdy/collections
  • [46] Astrofotografie mit Hansjörg Wälchli; upsky.ch
  • [50] «VIII. A catalogue of nebulæ and clusters of stars in the southern hemisphere, observed at Paramatta in New South Wales, by James Dunlop, Esq. In a letter addressed to Sir Thomas Makdougall Brisbane, Bart. K. C. B. late Governor of New South Wales. Presented to the Royal Society by John Frederick William Herschel, Esq. Vice President» James Dunlop;Philosophical Transactions of the Royal Society of London, Volume 118, pages 113-151, published 1 January 1828; DOI:10.1098/rstl.1828.0010
  • [149] SkySafari 6 Pro, Simulation Curriculum; skysafariastronomy.com
  • [160] The STScI Digitized Sky Survey; archive.stsci.edu/cgi-bin/dss_form
  • [277] «Historische Deep-Sky Kataloge» von Dr. Wolfgang Steinicke; klima-luft.de/steinicke (2021-02-17)
  • [313] «A New General Catalogue of Nebulae and Clusters of Stars, being the Catalogue of the late Sir John F.W. Herschel, Bart., revised, corrected, and enlarged» Dreyer, J. L. E. (1888); Memoirs of the Royal Astronomical Society. 49: 1–237; Bibcode:1888MmRAS..49....1D
  • [467] «Catalogue of nebulae and clusters of stars» John Frederick William Herschel, Philosophical Transactions of the Royal Society of London, 1 January 1864; DOI:10.1098/rstl.1864.0001; jstor.org/stable/108864