M13, NGC 6205, Heracles Cluster

 

Below is the full Resolution photo, Full frame sensor, (24x36mm) 5616 x 3744 pixels,

You are probably only seeing the upper left corner. Use the scroll bars to go to the central area.

 

 11" Celestron Edge, f10 - 2800mm F.L., Schmidt Cassegrain Telescope  

Canon 5D Mark II camera, spectrum enhanced, uncooled, at the scope's prime focus, IDAS's Light Polution Filter

Each of 12 photos, 100 seconds exposure at ISO 1600, ambient temperature 55deg F

Taken in Canon's RAW format,  converted to JPG with Canon software.
12 photos aligned and averaged together with Images Plus, No dark frame subtraction, Default Star Size & Halo Reduction tool applied,

Brightness, color, and contrast enhanced with Windows Photo Editor