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

\subsection{Summary}
%CKR: changed

Proposals for three types of receivers will be considered for this
summer semester (\obsperiod):

\begin{enumerate}
\item the new four band receiver EMIR consisting of
  dual--polarization mixers operating at 3, 2, 1.3, and 0.9\,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.
\end{enumerate}

About 2000 hours of observing time are expected to be
available. The emphasis will be put on observations at the longer 
wavelengths. The bulk of the 1.3\,mm observations %with HERA and MAMBO
will be scheduled in October/November. Proposals for the 0.9\,mm band
of EMIR will not be considered for this deadline.
%, together with a limited number of 0.8mm projects with EMIR. 
A {\bf separate Call} for 0.9\,mm Proposals may be issued in May when
the commissioning results for this highly weather dependent band will
be available.


%During the warmer months of the semester, emphasis will be put on
%observations at the longer wavelengths. We plan to schedule 1.3mm
%observations in October/November, together with a very small number
%(2) of 0.9mm projects using EMIR.  

We continue to call for Large Programmes which may consider using
HERA and MAMBO as well as the new receiver EMIR with the exception of its
0.9\,mm band (see contribution by P.~Cox elsewhere in this Newsletter (sect.~\ref{Large}).


\subsection{What is new?}

\paragraph{EMIR } The new generation single pixel heterodyne receiver
for Pico Veleta, EMIR ({\bf E}ight {\bf MI}xer {\bf R}eceiver), consisting of
dual-polarization 4 GHz bandwidth mixers operating at 3, 2, 1.3, and
0.9mm, will be installed and commissioned during March/April 2009.  
%This will not affect HERA and the bolometers.
During a large part of the five weeks installation and commissioning
period, pooled observations will be made during night time.

EMIR not only provides large improvements in receiver noise temperature
and  bandwidth, it is also more complex than the old receivers. We
therefore urge interested users to carefully study the detailed
description below.
%which is available on--line in the \href{}{long version} of the Call
%for 30m Proposals  

\paragraph{Observation time estimator }

We have prepared a new 30m time estimator for EMIR. Starting with the
feb02b release, it is part of the GILDAS software and accessible only via
ASTRO. For downloading of the GILDAS package please go to the 
\htmladdnormallink{GILDAS web site}{http://www.iram.fr/IRAMFR/GILDAS/}
 and follow the instructions. Note
that a {\it web based} estimator for EMIR will be made available only for the
next deadline in September 09.
As for HERA and MAMBO, the old web based time estimator is still
available from the
\htmladdnormallink{30m web site}{http://www.iram.es/IRAMES/obstime/time_estimator.html}.


\paragraph{Proposal form.} Motivated by the arrival of EMIR,  the 
proposal form for the 30m telescope has been modified. It now collects
the technical parameters of the requested observations in more detail
 on a separate {\it technical sheet} which is printed as the second
 page of the proposal.  Note that the 30m telescope and the
 interferometer now have separate proposal templates.\\[2ex]
               
In the following, we present the new receiver EMIR.  The
bolometer and HERA which continue to be operational as before are
described in the full version of the Call for Porposals available on
the IRAM web site.


