August 2015


IC 4633

Dust and Galaxies


Image of the Month: IC 4633

Image copyright: Brett du Preez


This distant galaxy appears to be linked by a stream of dust to a neighbouring galaxy and several bright stars, but it is all an illusion.  Although the two galaxies are related, the dust lane and stars are all part of our own Milky Way galaxy.  The galactic pair are actually many millions of light years in the background, and it is only coincidence that causes them to appear to line up.


Imaging telescopes or lenses: TS Optics Customized Newtonian Astrograph
Imaging cameras: Atik 490ex Mono
Mounts: CGEM
Guiding cameras: QHY5L-II QHY5L II Mono
Focal reducers: ASA 2" x0,73 Corrector/Reducer
Resolution: 3279x2624
Dates: July 17, 2015
Frames: AstroDon Tru-Balance E-Series LRGB 36mm: 18x600" bin 1x1
Integration: 3.0 hours
Avg. Moon age: 0.90 days
Avg. Moon phase: 0.91%
Bortle Dark-Sky Scale: 3.00
RA center: 259.391 degrees
DEC center: -77.620 degrees
Pixel scale: 1.004 arcsec/pixel
Orientation: 94.519 degrees
Field radius: 0.586 degrees


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