Hemisphere:  Northern  ·  Contains:  IC 342
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IC 342 - The Hidden Galaxy in Camelopardalis, 


IC 342 - The Hidden Galaxy in Camelopardalis
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IC 342 - The Hidden Galaxy in Camelopardalis

Technical card

Imaging telescopes or lenses: Skywatcher Explorer 200PDS

Imaging cameras: Nikon D810A

Mounts: Skywatcher NEQ6 PRO Synscan

Guiding telescopes or lenses: Skywatcher 9x50 finderscope

Guiding cameras: QHYCCD QHY5L-IIc

Focal reducers: Baader MPCC Mk III

Software: Photoshop  ·  Pixinsight

Accessory: Seletek Armadillo

Dates:Oct. 3, 2018

Frames: 41x600"

Integration: 6.8 hours

Avg. Moon age: 23.31 days

Avg. Moon phase: 37.72%

Astrometry.net job: 3277109

RA center: 3h 47' 42"

DEC center: +68° 7' 12"

Pixel scale: 0.996 arcsec/pixel

Orientation: 217.004 degrees

Field radius: 1.049 degrees

Resolution: 6340x4160

Locations: Puolivälinkangas - Oulu, Oulu, Finland

Data source: Backyard


Had some guiding problems with the new laptop, but otherwise this turned out fine.

IC 342 (also known as Caldwell 5) is an intermediate spiral galaxy in the constellation Camelopardalis relatively close to the Milky Way. Despite its size and actual brightness, its location in dusty areas near the galactic equator makes it difficult to observe, leading to the nickname "The Hidden Galaxy",[4][1] though it can readily be detected even with binoculars.[5] The dust makes it difficult to determine its precise distance; modern estimates range from about 7 Mly[6] to about 11 Mly.[2]

The galaxy was discovered by William Frederick Denning in 1892.[7] It is one of the brightest in the IC 342/Maffei Group, one of the closest galaxy groups to the Local Group. Edwin Hubble first thought it to be in the Local Group, but it was later determined not to be a member.[8]

In 1935, Harlow Shapley found that it was wider than the full moon, and by angular size the third-largest spiral galaxy then known, smaller only than the Andromeda Galaxy (M31) and the Triangulum Galaxy (M33).[9] (Modern estimates are more conservative, giving the apparent size as one-half to two-thirds the diameter of the full moon).[1][5]

It has an H II nucleus.[10]



License: None (All rights reserved)


  • Final
    IC 342 - The Hidden Galaxy in Camelopardalis, 


  • IC 342 - The Hidden Galaxy in Camelopardalis, 




Description: Annotated

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IC 342 - The Hidden Galaxy in Camelopardalis,