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[vsnet-chat 166] Atlas of Selected Areas

 
        Dear colleagues,
 
        We would very much appreciate any information on the magnitude 
system in "Atlas of Selected Areas" 163 charts for the N and 43 charts 
for the S sky. Hans Vehrenberg; Dusseldolf: Treugessell-Verlag 1971. 
 
In this atlas, are there two charts for each selected area; one with 
stars down to about 12.5, the other generally going to mag. ~16 ? the 
mags being given to two decimal places ? Are these mags photovisual ?
photographic ? visual ?
 
Edgar Everhart on Sky&Tel. 67, pag. 28 (1984); publsihed areas 
51, 57 and 68, for 1P/Halley. Were these taken from the same atlas ?
 
Can someone cast some light on this ? Many thanks in advance !
Best regards,
 
Alfredo Pereira
 
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::  Alfredo Pereira        falfredo@cc.fc.ul.pt        Ph: +351.1.4186812  ::
::  R. Antero de Quental, 8, 2 Dto, 2795 Carnaxide PORTUGAL                ::
::  http://skull.cc.fc.ul.pt/~falfredo                                     ::
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