[mmaimcal] [Fwd: RE: [Fwd: ACA configuration]]

[Alwyn Wootten]

---------------------------- Original Message ----------------------------
Subject: RE: [Fwd: ACA configuration]
From:    "Seiichi Sakamoto" <seiichi at nro.nao.ac.jp>
Date:    Sun, January 30, 2005 11:14 am
To:      "'Al Wootten'" <awootten at nrao.edu>
         "'Tony Beasley'" <tbeasley at nrao.edu>
Cc:      "'Thomas Wilson'" <twilson at eso.org>
         "ryohei kawabe" <kawabe at nro.nao.ac.jp>
         "koh-ichiro morita" <morita at nro.nao.ac.jp>
         "seiichi sakamoto" <seiichi at nro.nao.ac.jp>
--------------------------------------------------------------------------

Dear Tony, everyone,

I just received from Koh-Ichiro Morita a text file
that contains relative coordinates of the pads #1-11
used in the current version of the ACA configuration.

PAD_ID    EASTING      NORTHING
#00         -2.30         -4.50
#01          5.04          0.25
#02         -2.74          4.24
#03          8.37          8.36
#04        -11.43          3.06
#05          3.06        -11.43
#06          1.90         14.27
#07        -13.31         -5.50
#08         11.41         -8.78
#09         -6.79         15.54
#10        -10.07        -13.65
#11         16.85         -1.89

Coordinates of the pads #0-#11 are almost fixed
and we are working to optimize the N-S elongation
with additional pads #12-#17.

In the figure that I sent you before, it is supposed that
we will use pads #0-#11 for objects in the declination
range from -60 deg to +20 deg, and pads #1, #2, #7,
and #9-17 for those in other declination ranges.
ACA reconfiguration will be very tricky business.
I am now proposing alternative solution to Koh-Ichiro.

With best,

Seiichi

=======================================
Seiichi Sakamoto
---------------------------------------
ALMA-Japan Project Office
National Astronomical Observatory of Japan
National Institutes of Natural Sciences
e-mail: seiichi at nro.nao.ac.jp
URL:    http://www.nro.nao.ac.jp/~seiichi
-Address in Japan:
 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
 phone: +81-422-34-3816  fax: -3817
-Adress in Chile:
 Joint ALMA Office
 El Golf 40, Piso 18, Las Condes, Santiago, Chile
 phone: +56-2-467-6132  fax: -6101
---------------------------------------