Äîêóìåíò âçÿò èç êýøà ïîèñêîâîé ìàøèíû. Àäðåñ îðèãèíàëüíîãî äîêóìåíòà : http://www.astronomy.com/magazine/erika-rix/2013/05/on-the-trail-of-dark-nebulae
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Äàòà èíäåêñèðîâàíèÿ: Sun Apr 10 12:05:11 2016
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Ïîèñêîâûå ñëîâà: cygnus
On the trail of dark nebulae | Astronomy.com
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On the trail of dark nebulae

July 2013: How to sketch dark nebulae that you'll find silhouetted against the Milky Way this summer.

RELATED TOPICS: ASTROSKETCHING | DARK NEBULAE
Erika-Rix
When most amateur astronomers think of dark nebulae, the Horsehead Nebula (Barnard 33) immediately comes to mind. If you haven’t seen it, you’ve surely seen the Great Rift — a region in the constellation Cygnus the Swan that provides stunning naked-eye views of the dark veins running through the Milky Way.

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