NGC3423 Galaxy in Sextans

In 1784 William Herschel discovered this 3,8′ × 3,2′ sized and 11mag. bright galaxy in the constellation of Sextans.It is classified as an active SA(s)cd-typed galaxy with many starburst regions in the center.

NGC3423 has a real distance of 39mio.light-years from our own milky-way and its diameter measures about 45.000 light-years.


position (epoch 2000):

Ra.:   10h 51m 14,33s
Decl.: +05° 50′ 24,10″


image data:

LRGB image from

L = 21x1200s

RGB = 7x1200s each

a total of 14.0hours

80cm f/7 AstroOptik Keller corrected cassegrain

FLI Proline 16803 Astrodon LRGB Gen-II filters Prompt 7

CTIO/UNC Chile,remote controlled

image processing: Bernd Flach-Wilken


here you see NGC3423 in a squared 18.5arcmin.wide FOV.North is up.

for full resolution click HERE

this picture shows NGC2413 in a somewhat larger magnification:




Last modified on Wednesday, 22 January 2020 09:57

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