NGC 3351 (M95, Messier 95) barred spiral galaxy in Leo

RC 12" Astrograph (LRGB)

35' x 35' FOV

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Bigger size: 1800 px
© Velimir Popov & Emil Ivanov 2020

Cross-identifications for the galaxy NGC 3351: M 95, Messier 95, UGC 5850, LEDA 32007, MCG+02-28-001


RA (2000): 10h 43m 56.99s
Dec (2000): +11° 42' 02.8

NGC 3351 is a barred spiral galaxy located about 9.93 Mpc (32.4 Mly) away towards the constellation Leo. The galaxy has a morphological classification of SB(r)b with the SBb notation indicating it is a barred spiral and an (r) meaning an inner ring surrounds the bar (Buta et al.,2007). NGC 3351 has an inclination towards our line of sight of 41 degrees (Muraoka et al., 2019).

The galaxy has an oval envelop of low-surface brightness features it with the diameter of 11.7 arcmin corresponding to physical diameter of 33.8 Kpc (Rich et al., 2019). Lots of studies concern low-surface brightness features around galaxies. Why low-surface brightness features are so important? Primarily because the predictions are robust: they rely on the assumption that structure formation is hierarchical down to small scales - one of the fundamental predictions of cold dark matter cosmologies. The galaxy-size dark matter halos should be built by the steady accretion of smaller, dwarf-size dark matter clumps (e.g. Cole et al. 2000; Stewart et al. 2008; Fakhouri et al. 2010).

Charts and image details obtained from



Image and FOV details

Details for the image
Center of field RA 10:43:56.99s (h:m:s)
Center of field DE +11:42:02.8 (deg:m:s)
FOV 35.6 x 35.6 (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: 3.03.2013
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: LRGB: L 10x10 min, R 5x10 min, G 5x10 min, B 5x10 min
  Bin 1, Total Exposure Time - 250 min (4h10min)
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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