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Galaxies in the constellations Virgo and Coma Berenices, near the north Galactic Pole are quite numerous, Over 100 galaxies are visible on the full resolution image. Forty five galaxies are labeled below, and many unlabeled galaxies can be seen in this low resolution web image. The brighter galaxies can be seen in small amateur telescopes.
Technical. Canon 1D Mark IV 16-megapixel digital camera, 300 mm f/2.8 L IS lens at f/2.8. Six 2-minute exposures were combined for this image. Full image, no crop. Tracking by an Astrotrac. The field of view is 5.32 by 3.55 degrees. Stars to about magnitude 19 were recorded. No flats, no darks.
The Exposure Factors, CEF, CEFA are measures of the relative amounts of light received from a subject. It can be used to fairly compare wildly different lens/telescope apertures and exposure times. For this image:
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Keywords to this image = astrophoto-1 night low-light digital_astro galaxy Messier canon_1d4
Image ID: galaxies.galore.c12.28.2013.C45I1214-9.g-bin4x4s.jpg
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Last updated November 17, 2019