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Contains:  IC 1613
Getting plate-solving status, please wait...
 Irregular dwarf galaxy IC1613, 


            Thomas Richter
 Irregular dwarf galaxy IC1613

Irregular dwarf galaxy IC1613

Technical card

Resolution: 3189x2453

Dates:Dec. 29, 2016

Baader B 1.25'' CCD Filter: 3x600" -20C bin 1x1
Baader G 1.25'' CCD Filter: 3x600" -20C bin 1x1
Baader L 1.25'' Filter: 4x600" -20C bin 1x1
Baader R 1.25'' CCD Filter: 3x600" -20C bin 1x1

Integration: 2.2 hours

Darks: ~25

Flats: ~25

Bias: ~100

Avg. Moon age: 0.18 days

Avg. Moon phase: 0.04% job: 1390969

RA center: 16.176 degrees

DEC center: 2.150 degrees

Pixel scale: 1.220 arcsec/pixel

Orientation: 1.397 degrees

Field radius: 0.682 degrees

Locations: Kreben, Kreben(Wilhermsdorf), Bayern, Germany


Sorry ! The image has been extremely sharpened because of guiding problems :-(

IC 1613 (also known as Caldwell 51) is an irregular dwarf galaxy, visible in the constellation Cetus near the star 26 Ceti.[5] It was discovered in 1906 by Max Wolf, and is approaching Earth at 234 km/s.

IC 1613 is a member of the Local Group.It has played an important role in the calibration of the Cepheid variable period luminosity relation for estimating distances. Other than the Magellanic Clouds, it is the only Local Group dwarf irregular galaxy where RR Lyrae-type variables have been observed; this factor, along with an unusually low abundance of interstellar dust both within IC 1613 and along the line of sight enable especially accurate distance estimates.

In 1999, Cole et al. used the Hubble Space Telescope to find that the dominant population of this galaxy has an age of ~7 Gyr. Using its Hess diagram, they found that its evolutionary history may be similar to that of the Pegasus Dwarf Irregular Galaxy. Both galaxies are classified as Ir V in the DDO system. Also in 1999, Antonello et al. found five cepheids of Population II in IC 1613, giving self-evident support for the existence of a very old stellar population component of IC 1613. In 1999, King, Modjaz, & Li discovered the first nova ever detected in IC 1613.

IC 1613 contains a WO star known as DR1, the only one so far detected further away than the Magellanic Clouds.



Thomas Richter
License: None (All rights reserved)


  •  Irregular dwarf galaxy IC1613, 


            Thomas Richter
  • Final
     Irregular dwarf galaxy IC1613, 


            Thomas Richter

Sky plot

Sky plot


 Irregular dwarf galaxy IC1613, 


            Thomas Richter