[vsnet-campaign-v838mon 412] (fwd) On V838 Mon

[Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>]

Date: Tue, 7 Jan 2003 10:00:14 +0100 (CET)
From: Ulisse Munari <munari@pd.astro.it>

It will be also quite relevant to report accurate photometry
of some nearby stars of known color to check the color correction
to apply to the unfiltered TP 4415-hyp observations (the substantial
reddening made V838 Mon appreciably red even in quiescence).
A chart with identified stars of quite different B-V color 
can be found, for example, in http://ulisse.pd.astro.it/V838_Mon/

Could the original film be digitized and made available on the web ?

If V838 Mon really was 2 mag brighter than in quiescence
in 1998, it would shape the interpretation of the nature of
the object.

U.Munari

>Date: Mon, 06 Jan 2003 13:08:35 -0700
>From: Arne Henden <aah@nofs.navy.mil>
>Subject: [vsnet-chat 5852] Re: V838 Mon in 1998
>
>There is a 14th magnitude star 20 arcsec to the northeast:
>         RA           DEC        V     B-V    U-B    V-R    R-I
>comp 07:04: 5.82  -03:50:38.5 14.077  0.587  0.103  0.370  0.412
>var  07:04:04.81  -03:50:50.9
>
>You should confirm the identification, either by visual inspection
>against the DSS, or else with astrometry.  In 1998, V838 Mon was
>most likely 15-16th magnitude at V, based on existing plate material.
>Arne
>
>
>
> Thorsten Lange wrote:
> Hello,
> 
> today I have got an image of the V838 Mon area from Mr. Gerhart Klaus
> (Grenchen/Switzerland) showing the star clearly at 13.8mag. Or is there a
> near star with this brightness?
> 
> V838 Mon    19980327.844    13.8
> 
> The image is taken with a Schmidt telescope 20/22/30cm on TP 4415 hyp.
> 
> Best regards,
> 	Thorsten Lange
>

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