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> ------------------------------------------------------ > PHOTOMETRIC CCD OBSERVATIONS OF VARIABLE STARS > ------------------------------------------------------ > CENTER FOR BALCONY ASTROPHYSICS (CBA) Tsukuba, JAPAN > Observer: Seiichiro Kiyota > E-mail: skiyota@abr.affrc.go.jp > WWW: http://vsnet.age.ne.jp/x/meineko/index-e.html > Instruments: 0.25-m +Apogee AP-7+ Optec Maxfilter 2" All these observations by Kiyota always suffer from terrible errors. I don't understand why people don't care about the numbers they provide since they can then be used to "prove" wrong statements and to achieve false conclussions. > ORIalpha 20030417.435 1.40V Kis.VSOLJ It isn't this faint. 1.0 was its minimu brightness. The difference is as big as being in a normal minimum or in a record-breaking state!!!! > SCOdelta 20030416.683 1.73V Kis.VSOLJ > SCOdelta 20030416.703 1.38B Kis.VSOLJ > SCOdelta 20030417.640 1.79V Kis.VSOLJ > SCOdelta 20030417.688 1.43B Kis.VSOLJ > SCOdelta 20030428.580 1.97V Kis.VSOLJ This is funny: Delta Sco is the bluest star in the sky with a B-V of -0.35/-0.36 !! But it is actually around +0.06 since it has reddened at its bright state. Of course its brightest state is 1.6-1.7 and it hasn't dropped to 1.97V !!!!! > SCTR 20030410.742 4.86V Kis.VSOLJ It wasn't this bright at all! > SGRV4745 20030428.705 8.45Ic Kis.VSOLJ > SGRV4745 20030428.708 9.16V Kis.VSOLJ > SGRV4745 20030428.715 8.90B Kis.VSOLJ > HadV98 20030428.641 10.07V Kis.VSOLJ Is it a typing error for 11.07?? I don't have the possibilities of doing photometry but during these years all I can do is suffering instead of enjoying when new PEP or CCD reports are received. If this is a professionals' issue, leave it to them! If we want to so something useful, make sure that at least what we are doing make sense. Check results, research. In this context, visual observing is more than alive... even with the ASAS-3 system operating! Best wishes, Sebastian. PS: this is not just because... Every person able to do photometry should take it as a gift and try to follow the rules to produce useful data. If not, they are wasting even their own time... ;-((
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