Archive for August 8, 2017

Globular Cluster Messier 14 – July 2017 Observer’s Challenge Report

August 8, 2017

JULY 2017 OBSERVERS CHALLENGE – M-014

In 10-inch reflector, M14 is a large cluster, mostly round, but with a slight elongation, oriented northeast-southwest.

At 160x very few stars can be resolved, but only with averted vision. The surface brightness is overall fairly low with a mostly even texture, but with a subtle brightening in the central region. The edges fade very gradually outwards.

M14 at magnitude 7.6 is quite a bit fainter than globulars M10 and M12, also located in Ophiuchus.

In 3.5-inch Maksutov-Cassegrain the cluster is mostly round with a faint brighter concentrated middle. No resolve of stars.

Roger Ivester

Pencil Sketch: 

FullSizeRender

Inverted colors via computer:

Rogers M-014 Inverted

 

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