Mario Brus
7/3/2011 10:22:54 PM
A Study in Globulars - M4
Magnitude 7.1
Distance from earth: 7,200 ly
Distance from galactic center: 19,200 ly
Constellation: Scorpius
Dimensions: 26' imaged
Diameter: 75 ly
Distinctives: This is one of the two closest globulars to us. It has a distinctive central vertical bar.
Meade LX200GPS at f/10 guided; Canon 30D modified; ASA1600; 10 sec subs X 60; Deep Sky Stacker and Photoshop post-processing.
I enjoyed placing these three globulars (M4, 13, and 19) right next to each other and directly compared them. This teaches closer and more detailed observation skills.
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