[vsnet-chat 4384] Re: About V Hya..

["Sebastian Otero" <varsao@fullzero.com.ar>]

> First of all, sorry for my bad english I am still learning english.
> I observed that star several times and its fainter then 8 mag in my
> observations.I checked the observations in vsnet and aavso databases. All
of
> the observations are between the range 7.5 and 8.1 except my and
Sebastian's
> observations. I always try to do my best but likewise every human I can
make
> error. But I believe the correctness of every observation that I sent. It
is
> possible that only Sebastian's observations are correct. I think we should
> talk about the best way of observing these kind of stars. I believe that
all
> of the observers here  know something that the others don't know. We
should
> share them.
> Regards,
> Erhan Eker

Erhan:
            I totally agree with you. We should discuss all these things. I
don't criticize your observations. But it's obvious that every person is
using different techniques an maybe some of them don't even  care about
these issue.
            Maybe we should have a different color response and that could
account for the discrepance. But I don't think that 2 magnitudes may be only
for that reason. Do you observe with averted vision that kind of stars?
Sometimes people do it because they think that if not, Purkinje effect may
ruin their estimate. This is true for brigther stars and when they stare at
them.
But NOT staring doesn't mean looking at them with averted vision. You see,
rods are blind to color, V Hya is incrdibly red (It is so dark that the
contrast with the background sky is very small!!!) so the star may simply
not be detected.
            If we look straight at it, this problem is gone.
            I'm not speaking of my personal abilities to estimate or the
like. As Sergio said it is not exclusivity of anyone. It's just a way to be
accurate. Everybody can do this. Again , I think the key is to check our
results.
            I speak against numbers: comparison to PEP(V) observations,
practising every time I can...
            These extreme stars such as V Hya and R Lep are the most
difficult but we should try to improve the quality of our observations and
let our works can be compared with professional data. It is possible.

            And nobody judges anybody, please don't misunderstand all this.
Of course we are humans. It's just trying to improve our results.
            Go ahead!!!

Cheers,
Sebastian.


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