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[vsnet-obs 5795] Southern observations incl V1830Sgr



for May 1997, with the apogee 40x120 from Pretoria

Star         UT       Magn

cvs 
KX TrA   17.0     12.1
Sakur obj   17.0   11.2
V1830 Sgr  17.006  12.0
V1830 Sgr  17.108  12.2
AR Pav    17.0   11.6
V3885 Sgr   17.1   10.3
RR Tel    17.1   10.9
RZ Gru   17.1   12.2

rcbs
RZ Nor  17.0    11.7
V1860 Sgr  17.0   12.1

others
AI Sco  05.8   10.5
AI Sco  11.8   11.3
AI Sco  14.9   11.3
AI Sco  16.9   10.9
S Ind  17.1  8.5

My consecutive estimates of V1830 could be linked to
superhumps but I rather expect the 0.2 magnitude change over the
two hour period to be caused by the position angle effect. 
V1830 Sgr has moved through  zenith during that period and the
apogee is always used aiming at the target to the right hand site of
zenith.

Regards,

Berto Monard / MLF

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