Find Messier Object M20, Trifid Nebula, & M21 Astronomy eBook DSS Photos, Images, Star Chart App & Deep Sky Map, Messier Marathon 9th Push

Categories: 5.0-5.9 , 9.0-9.9 , 9th Leg , Find Messier Objects Star Chart & Sky Map , M20 M21 M22 M23 M24 M25 M26 M27 M28 M29 , Sagittarius Deep Sky Objects , emission nebula , i- September Deep Sky Objects , open clusters
Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)

Downloadable Deep Sky Field Guides at Amazon (click book cover for info.)


A set of 10  Reference Line Maps, star charts and DSS photos of M20, the Trifid Nebula, and m21.  These maps works well with red dot finders and green laser pointers.  The Reference Line Method method adapts well to both binoculars and telescopes.

How to Use Reference Line Maps to locate deep sky objects.

Confirmed by P. Messier Renaix     
Mapped by P. Messier Renaix     

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Proverbs are the daughters of experience. – Sierra Leone

You can't see the whole sky through a bamboo tube.
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How vast these Orbs must be, and how inconsiderable this Earth.--Christian Huygens, 1689

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