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

Inverted colors via computer:

This entry was posted on August 8, 2017 at 9:42 pm and is filed under Work File Only - Observer's Challenge Reports. You can subscribe via RSS 2.0 feed to this post's comments. Both comments and pings are currently closed.