Globular cluster in Ophiuchus

This globular cluster was discovered by Charles Messier in 1764, although it was William Herschel who first resolved it as a star cluster in 1783. It is located in Serpens.

Distance to Earth: 
16 light years
Visual magnitude: 6,7
More information can be found in: Messier index. M5

High resolution image

Date and location 6-jul-2013. Caraquiz, Madrid
Telescope ASA N10, f=906mm  on ASA DDM85 mount.
Camera FLI ML16803.  IDAS LPS, RGB Baader filters
Image Processing L: 16x120s, RGB: 6x120s. Processed with Pixinsight

Visits since september 14th, 2004:   Contador