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On vsnet-obs 45730 There is an apparent instance of confusion between V-band and unfiltered CCD observations, although Arne Henden claimed in the past that there is no clear indication of such confusions. > 1552+72 SS UMI JUL 02.9965 174 RZD CCDV Okay, this AAVSO format indicates that the observation was V-band filtered CCD observation. As stated below. > CCD(V)(B)(R)(I) = Charge-coupled device with (V)(B)(R)(I) filter However, Rodriguez's description of equipment states differently. > Telescope 0.20m+CCD This confusion is apparent when compared to vsnet-obs 45728. > DRAES 20030702.965 14.5CV Diego Rodriguez. > SERNY 20030702.979 15.5CV Diego Rodriguez > LYRMV 20030702.993 12.5CV Diego Rodriguez > > Telescope 0.20m+CCD These observation can read "unfiltered CCD observations calibrated on V-magnitude sequence" (=CV), which does not contradict the description of equipment. But with the same equipment, the AAVSO format (vsnet-obs 45730) indicates a different system. Which system is correct? Diego, please check your system and please resubmit observations with correct specification of the system and description of equipment. see http://vsnet.kusastro.kyoto-u.ac.jp/vsnet/etc/format.html for system specifications. This discordance is apparently one of the negative consequences of AAVSO's method of CCD system specification. Regards, Taichi Kato
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
