
\section{Call for Observing Proposals on the 30m Telescope}

\subsection{Summary}
%
Proposals for three types of receivers will be considered for the
coming winter semester:

\begin{enumerate}
\item the observatory's  set of four dual polarization heterodyne
receivers centered at wavelengths of 3, 2, 1.3,  and 1.1 mm.
\item the 9 pixel dual-polarization heterodyne receiver array,
HERA, operating at 1.3 mm wavelength
\item The MAMBO--2 bolometer array with 117 pixels operating at 1.2 mm; 
the smaller MAMBO--1 array with 37 pixels is kept as a backup.
\end{enumerate}

Emphasis will be put on observations at the shorter wavelengths,
%summer/winter 
but 3mm proposals are also encouraged inasmuch
as they are suited for medium or low quality weather backup onservations.
About 2000 hours of observing time are expected to be available.

%which will allow
%scheduling of a few longer programmes ($\simlt 150$ hours).

The main news relevant for the coming winter semester are described
here. Details of proposal formalities, instrumentation, observing
modes, and estimation of observing time are described on the
\htmladdnormallink{IRAM web site.}{http://www.iram.fr/GENERAL/calls/s08/}

\subsection{What is new?}

In addition to the normal observing proposals, IRAM invites
applications for special {\bf Large Observing Programmes} (see
the announcement by P.~Cox\ref{Large} which appeared in the Augist
2008 Newsletter). On the 30m
telescope, these Large Observing Proposals are restricted for the
coming winter semester to the bolometer and HERA instruments. The
proposal cover page provides a checkbox for identifying a Large Programme.

The next generation single pixel heterodyne receiver for Pico Veleta,
{\bf EMIR }(Eight MIxer Receiver), consisting of dual-polarization
  4 GHz bandwidth mixers operating at 3, 2, 1.3, and 0.9mm, will provide a
  boost in sensitivity and observing capabilities, fully justifying its
  installation as soon as possible during the coming winter semester. 
Installation and commissioning will take about 4 weeks. 
%The advantages of using EMIR in terms of receiver
%noise and bandwidth are so enormous for the observer that the scrifice
%of precious winter time apeears justified. 
During installation, observation
with HERA or MAMBO can still proceed during night time, since 
the Nasmyth cabin optics are not affected at this stage. In view of
the uncertain time scale and our lack of experience with EMIR, we
request 30m proposers to use the performance of the {\it current receivers}
for their estimate of observing time. Proposals scheduled after the
installation of EMIR may see their time allocation adjusted accordingly.


An effort was made with EMIR to keep as much as possible
of the frequency range below 83 GHz. As the final outcome will not be
known before the proposal deadline, we recommend to interested astronomers to
consider applying for these low frequencies now.  

%The telescope's new control system is by now well worne in and
%globally as performant as the old control system. A host of new
%features are planned to be introduced this summer (see  the
%\htmladdnormallink{NCS web site}{../IRAMES/ncs30m}).


Remote observing is available from the IRAM offices in Granada and
Grenoble, and from the remote stations in Madrid and Bonn. A remote
station in Paris may also become available soon.

%The {\bf full Call for 30m Proposals} is available on the IRAM web
%site at the URL indicated above.

%\signed{
%\htmladdnormallink{Clemens Thum}{mailto:thum@iram.fr},
%\htmladdnormallink{Rainer Mauersberger}{mailto:mauers@iram.es}}
%Clemens Thum  \& Carsten Kramer}
%\end{document}
