7  Reference Line Maps and DSS Images of M15.  This series of maps has been developed for use with the Reference Line Method.  It adapts well to both binoculars and telescopes.

Observing Notes:

1.  M15 is very easy to locate using the intersection of the two reference lines.

2.  Smyth’s description (References), “An extensive and magnificent mass of stars with the most compressed part densely compacted and wedged together under unknown laws of aggregation.”

Credits, Links & Resources:

1. The images of  galactic position of eemission nebulae, star clusters and planetary nebulae relative to our own Sun  are provided courtesy of thinkastronomy.com.
2. A complete online resource for  distances, sizes and locations of deep sky objects is available at seds.org.
3. Sky and Tleescope’s This Week’s Sky At A Glance is worth checking before every stargazing session.
4. Danko’s  Clear Sky Chart provides a 48 hour forecast of observing conditions for every  location  in North America.
5. Reference Line Maps are produced by Project DeepSkyMap, a collaborative venture of observers who enjoy  knowing the heavens and  locating objects for themselves.

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