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 6823 RA= 19 43 .2 Dec= +23 19<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 />
Viewing distance<br />
• 12.5-13.5<br />
25x: 121<br />
• 13.5-14.5<br />
50x: 61<br />
14.5-15.5<br />
>15.5 Scale= 1 . 1 3 arc-min<br />
100x:<br />
200x:<br />
APP ENDIX B: STAR CLUSTERS FOR FINDING YOUR LIMITING MAGNITUDE<br />
NGC 6823 RA= 19 43 .2 Dec= +23 19 (2000 .0)<br />
• 11.5-12.5<br />
Viewing distance<br />
•<br />
in cm<br />
• 12.5-13.5<br />
25x: 121<br />
•<br />
100x: 30<br />
•<br />
8.5-9 .5 • 13.5-14.5<br />
50x: 61 200x:<br />
9 .5-10.5 14.5-15.5<br />
•<br />
•<br />
16.5-11 . 5 >15.5<br />
Scale= 1 . 1 3 arc-min / cm<br />
< 7.5<br />
7.5-8.5<br />
15<br />
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132. '150<br />
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. 155<br />
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149<br />
156 . 1 14 .141 15 . 6 . 9 116<br />
124 132<br />
!t38 150 ·<br />
156 . 132. 126 ' 146 135 • 136<br />
132 . 153 .<br />
_ . 154. -136 :119 138 . ' 153 .137 .128<br />
128. 152. ·144 .121<br />
. 159 ·140 •• .148<br />
135 .132 r 139 .138<br />
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132. .. 155 . 147 • • 148 .<br />
145 144<br />
150 135 . 13 . 9<br />
147. 116- ., . 145 .98 . 144 . 142<br />
118- .152 . 137<br />
' 154<br />
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X Offset (arc-min)<br />
5<br />
X<br />
o<br />
Offset<br />
(arc-min)<br />
-5<br />
260<br />
261