Return to Home Page
> R Lep very faint minimum ...or just a color problem... We have discussed it several times. 1.5 mag. difference is too much but it is possible. It's important to have in mind that it is very different to estimate the brightness of a bright red star than to estimate a faint one. The techniques that should be used to stick to V (or to get closer..) are the opposite in the different cases. With a naked eye variable we should avoid using direct vision and staring. BUT wiht faint telescopic or binocular stars, we need to stare and perceive the concentrated point of light in its full brightness if we want to make a good comparison. Otherwise we'll be greatly underestimating our variable's brightness. Intermediate cases and we should use an intermediate approach (eg: 6th mag. stars through binoculars). Try this and see wht you get. Sebastian. > YYYYMMDD(UT) mag observer > 20020220.460 113 (Mitutaka Hiraga) > 20020221.060 105 (Erwin van Ballegoij) > 20020222.465 108 (Kenji Nakai) > 20020224.035 95 (Sebastian Otero) > 20020224.456 109 (Kenji Nakai) > 20020301.019 110 (Erwin van Ballegoij) > > --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.325 / Virus Database: 182 - Release Date: 19/02/02
Return to the Powerful Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
