Daily Archives: April 14, 2015

NGC 4631 and NGC 4656

14 апр

On this image you’ll find two neighbour galaxies in the constellation Canes Venatici: NGC 4631 (Whale Galaxy), to the left; and NGC 4656 (Hockey Stick or Crowbar Galaxy) – to the right.

NGC 4631 (Whale Galaxy ) – is an edge-on spiral galaxy. This galaxy’s slightly distorted wedge shape gives it the appearance of a herring or a whale, hence its nickname. Because this nearby galaxy is seen edge-on from Earth, professional astronomers observe this galaxy to better understand the gas and stars located outside the plane of the galaxy. It’s size is close the size of our Milky Way. NGC 4656 is a Luminous Blue Variable in “super-outburst” which was discovered in NGC 4656/57 by Doug Rich on March 21, 2005.

This image was made using the piggyback method, when the camera is being put on top of the telescope. In this case telescope is needed only for tracing the object. Equipment used for photoshoot is Canon T3i + Sigma 150/500 APO “300 mm”.

Автор: Fabien Tremblay

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