NGC 1530 - type SB(rs)b bared spiral galaxy towards the constellation Camelopardalis

RC 12" Astrograph (LRGB)

28' x 28' FOV

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Bigger size: 1600 px
© Velimir Popov & Emil Ivanov 2020

Cross-identifications: NGC 1530, UGC 03013, PGC 015018, LEDA 15018, MCG+13-04-004


RA (2000): 04h 23m 27.1s
Dec (2000): +75° 17' 44.1"

Not so often imaged by the amateurs NGC 1530 is one of the most studied galaxies by the professionals. NGC 1530 type SB(rs)b bared spiral galaxy at a distance of 35.7 Mpc (116.4 Mly) from us. “SB” notation indicating it is a barred spiral, “b” means intermediate type spiral having relatively more open, knotty arms and a small bulge and (rs) refers to partial inner rings having a spiral character - called “inner pseudorings”, (Buta et al.,2007).

NGC 1530 is a very strongly barred galaxy (Font et al. 2014). Something more it is double-barred galaxy. Double-barred galaxies account for almost one third of all barred galaxies, suggesting that secondary stellar bars, which are embedded in large-scale primary bars, are long-lived structures (Wozniak H., 2014). The bar of NGC 1530, which has a major axis length of ∼24 kpc and a bar class 7 (Buta et al. 2003), is one of the largest and strongest ever observed. The bar of NGC 1530 has prominent straight bar dust–lanes. The investigations of Zurita & Perez 2008, promote the hypothesis that star formation in bars takes place principally on the trailing side of the bar, in places where high gas density is present.

NGC 1530 has an inner nuclear ring with semi-major axis r = 1.20 kpc with ellipticity e = 0.80 (Comeron et al. 2010). Nuclear ring at center of the galaxy exhibit strong star formation activities. An early study of NGC1530 shows a concentration of star forming regions solely at the ends of the galactic bar or around the nucleus. Reynaud & Downes (1998) concluded for NGC 1530 the existence of weak velocity transitions at the ends of the bar which are inversely correlated with strong star formation in the same areas, including the nuclear ring location.

Charts and image details obtained from



Image and FOV details

Details for the image
Center of field RA 04:23:26.3 (h:m:s)
Center of field DE +75:18:01.7 (deg:m:s)
FOV 28 x 28 (arcmin)
Pixel scale: 1.04 (arcsec/pixel)

RC 12" Astrograph (IRIDA South dome)

Imaging details

Optic(s): RC 12" with Astro-Physics corrector @ f/5 (RC)
Mount: ASA DDM85 Premium
Camera: ATIK 4000 M
Filters: Astronomik II: Lumиnance
Dates/Times: 3.09.2013
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: LRGB: L 24x10 min, R 12x10 min, G 12x10 min, B 12x10 min
  Bin 1, Total Exposure Time - 600 min (10h)
More details: Bias, dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013-2020. All Rights Reserved
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