Return to Home Page
Re: [vsnet-obs 45064] Re: CCD observations by Kis (Apr.+) > I think there is some different between V and visual magnitude in red > star such as R Sct. > And I think that it also depend on my comparison star, Tycho > 5126-355-1 that is the only star is suitable for comparison on my CCD > field. > Exact zero point might be some different. I once surveyed this field to check the difference between Hipparcos/ Tycho magnitudes and traditional variable star charts. As far as I remember, there was a big difference between modern V and Harvard visual photometry, which was probably used in many traditional variable star charts. Could it have resulted the difference? Regards, Taichi Kato
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
