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Hello Taichi
There is an aparent confusion
My original report VSNET Fomat
UMISS JUL 02.9965 174CV Diego Rodriguez
My report AAVSO.
1552+72 SS UMI JUL 02.9965 174 RZD CCD
Telescope 20cm+CCDST9E unfiltered CCD observations calibrated
on V-magnitude sequence(=CV),
Chart AAVSO sequence V
Symbols AAVSO < = fainter than magnitude given (variable not seen)
: = uncertain
PEP = Photoelectric (V)
PV = Photovisual
PTG = photographic
CCD(V)(B)(R)(I) = Charge-coupled device with (V)(B)(R)(I) filter
> 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
