Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  NGC 4627  ·  NGC 4631  ·  Whale Galaxy
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Celestial Whale, Roland Christen
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Celestial Whale

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Celestial Whale, Roland Christen
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Celestial Whale

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Description

NGC4631 in Canes Venatici.

Imaged over 3 nights in good seeing and excellent transparency in our observatory situated in a light polluted industrial park.

The AP 10" Mak-Cass was used at F10 focal ratio with a 67 TC compressor. The fused quartz primary mirror combined with carbon fiber tube required no re-focusing over a 20 deg F temperature range.

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Celestial Whale, Roland Christen