NGC 2403 - spiral galaxy in Camelopardalis

RC 16" Astrograph (L-RVB)

47' x 47' FOV

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© Velimir Popov & Emil Ivanov 2023


NGC 2403, LEDA 21396, UGC 3918, Caldwell 7

NGC 2403 is a low mass, late-type (SABcd) spiral galaxy in the outskirts of the M81 group at a distance of 3.2 Mpc (10.5 Mly) (Carlin et al. 2016). NGC 2403 has some global properties similar to those of the bulgeless galaxy M33 containing large population of intermediate-age star clusters. The recent studies confirmed stellar population parameters (age, metallicity and alpha abundances) and stellar masses for 7 globular star clusters associated with NGC 2403 (Forbes et al., 2022). NGC 2403 contains numerous star-forming HII regions which are feeding by fountain-driven gas accretion over the disc of the galaxy (Li et al., 2023).

Charts and image details obtained from



Image and FOV details

Details for the image
Center of field RA 07 36 51.4 (h:m:s)
Center of field DE +65 36 09.2 (deg:m:s)
FOV 47 x 47 (arcmin)
Pixel scale: 0.69 (arcsec/pixel)

RC 16" Astrograph (IRIDA South dome)

Imaging details

Optic(s): RC 16" astrograph at f/6.4
Mount: ASA DDM85 Premium
Camera: MORAVIAN C4-16000 cooled scientific CMOS
Filters: B, V, R, (Bessel) filters) and Lumиnance (clear)
Dates/Times: 21.02.2023
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: LRVB: L 23x2 min, R 23x2 min, V 23x2 min, B 23x2 min
  Bin 1, Total Exposure Time - 184 min (2h 4min)
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013-2023. All Rights Reserved
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