[vsnet-sequence 154] (fwd) Re: (fwd) Re: GK Per 118 S COMP

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

Date: Tue, 12 Mar 2002 22:55:49 +0100
From: Francisco Manuel Rica Romero <fco.rica@sinix.net>
Subject: Re: [vsnet-chart-problem 7] (fwd) Re: GK Per 118 S COMP

Hello friends:

There are a wonderfool paper that study the GSC photometry comparing
with
Tycho catalog:

"A Photometric Calibration of The Guide Star Catalogue" by C.Fabricius.

In this paper don't apear the reference but with Abstract Services of
CDS it
can be fond.

The color term:

=======================================
Band Emulsion+ filter       Color Term
=======================================
J    103aO+blue OG         +0,58
J    IIIaJ+GG385           +0,48
J    IIIaJ+GG395           +0,44
V    IIIaJ+GG495           +0,09
V    103aG+GG495+yellow OG +0,03
V    IIaD+GG495            -0,04
V    IIaD+W12              -0,11
V    IIaD+GG495+yellow OG  -0,21
E    103aE+ red plexi      -0,29
=======================================

The calibration is complicated by magnitud-dependence in addiction with
color-dependence.

greetings.

====================================================================
Francisco Manuel Rica Romero
Astronomical Society of M-Ai(Brida (Spain)
fco.rica@sinix.net  (Double Star Measurements web:
http://teleline.terra.es/personal/fco.rica/home.htm)
====================================================================

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