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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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• 109<br />

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.111 1 5 .135<br />

132. '150<br />

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136<br />

. 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 />

• . 140 . 144 . _<br />

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

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