OF THE ROGER N. CLARK
OF THE ROGER N. CLARK
OF THE ROGER N. CLARK
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VISUAL ASTRONOMY <strong>OF</strong> <strong>THE</strong> DEEP SKY<br />
NGC 6494 (M23) RA=17 56 .9 Oec=-19 01<br />
• < 7 .5<br />
• 7 .5-8.5<br />
• 8.5-9.5<br />
• 9.5-10.5<br />
• 10.5- 11.5<br />
• 11.5-12.5<br />
• 12.5-13.5<br />
. 13.5-14.5<br />
• 14.5-15.5<br />
Viewing distance<br />
25x: 64 100x:<br />
50x: 32 200x:<br />
>15.5 Sca 1 e= 2.1 3 arc-min<br />
APP ENDIX B: STAR CLUSTERS FOR FINDING YOUR LIMITING MAGNITUDE<br />
--<br />
NGC 6 4 94 (M23) RA= 17 56 .9 Oec=-19 01 (2000 .0)<br />
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Viewing distance<br />
25x: 64 100x:<br />
50x: 32 200x:<br />
in cm<br />
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