Subject: SOHO/SUMER and HINODE/EIS campaign

From: Peter Gomory <[email-masked]>
Date: Mon, 26 Mar 2007 10:36:04 +0000 (UTC)

Dear TRACE planners, 

we have applied for the observing time in a frame
of the joint observing campaign of the SOHO/SUMER 
and HINODE/EIS spectrometers. This program was 
included to the SOHO+HINODE April 2007 campaign 
(program 25) scheduled for week 15. 

For our scientific goals it would be great if we can get 
also support of the TRACE instrument.

Our main aim is to study upper parts of the solar 
atmosphere (i.e. chromosphere, transition region and 
corona) in order to identify the most probable 
physical mechanism responsible for the heating of the 
solar corona localized particularly in/above 
chromospheric network. The detailed scientific 
justification of our observing program and the description 
of the SUMER and EIS observing details can be found at 
http://www.mps.mpg.de/homes/curdt/hinode/HINODE_cases.html
(observing program nr. 25). 

To reach our goals it is very important to obtain 
also high resolution 2D images of the solar corona 
localized above chromospheric network. Therefore, 
TRACE measurements taken in the 171 A channel will 
definitely improve the quality and complexity of 
our observing campaign. The details of the planned 
TRACE measurements are listed below.  

TRACE observing details:
------------------------
- FOV: 512" x 512"
- spectral channel: 171 A - corona
                    (+ one exposure taken every ~15 minutes 
                     in the WL and 1600 A channel = data for 
                     the spatial coalig. with other instruments)  
- exposure time: controlled by automatic 
                 exposure control
- total run duration: minimum: ~3.5 hours
                      optimum: ~7.0 hours
- no compensation of the solar rotation
- target: quiet Sun near disk center 
- pointing: specified via e-mail a day in advance

We would be very obliged if the TRACE will be able to support
our program with this type of observations. Therefore we
would be obliged to hear from you whether this is possible
in frame of the SOHO+HINODE campaign scheduled for April
2007 (week 15 in our case).

With best wishes and many thanks beforehand

Peter Gomory, coordinator of the SOHO/HINODE April 2007 program 25

Tatranska Lomnica, 26/03/2007

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* Peter Gomory                tel.  : ++421 52 7879 166 (111 secretary)  *
* Astronomical Institute      fax   : ++421 52 4467 656                  *
* Slovak Academy of Sciences  email : [email-masked]                    *
* 05960 Tatranska Lomnica     WWW   : http://www.astro.sk/~gomory        *
* Slovak Republic                                                        *
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