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Using FEROS DRS at home
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Software Info : MIDAS 98NOV
The Midas NOV98 release contains the complete FEROS context. In order to use the following
MIDAS procedure, you then need to have the Nov98 MIDAS version installed.
The context differs slightly form the installed version at the telescope.
On ins1p5 (DRS workstation for FEROS), the MIDAS version is Nov97 and the FEROS context has been
added. The main difference between the 2 installations resides in the name of the commands :
The correspondance between the Nov97+Feros context and Nov98 is the following :
| Nov 97 + Feros context |
Nov98 |
| FIND/FEROS |
SEARCH/FEROS |
| LOCATE/FEROS |
DEFINE/FEROS |
| STRAIGHTEN/FEROS |
RECTIFY/FEROS |
| UNBLAZE/FEROS |
FLAT/FEROS |
| BACKGND/FEROS |
BACKGR/FEROS |
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Software Info : MIDAS 98NOV, 99NOV...
Some errors have to be corrected in the MIDAS 99NOV release to be able to use the FEROS context.
The file colmean.exe has to be in the directory 99NOV/contrib/exec/ instead of the directory 99NOV/stdred/exec/ .
The file ferosmerge.prg in 99NOV/stdred/proc should be replaced
by the following one : ferosmerge.prg
Do the same for 98NOV except of course replace 99NOV in the above with 98NOV.
MIDAS Procedures
In order to use the same Data Reduction Software as at the telescope,
you will have to install the following set of Midas procedure in your midwork directory.
Put this archive in your midwork directory and use the command
gzip -dc proc.tar.gz | tar xvf - to extract the MIDAS procedures.
Two versions of login.prg are provided, login.prg.97NOV and
login.prg.98NOVpl2.2. Rename the appropriate one to login.prg,
e.g. mv login.prg.98NOVpl2.2 login.prg. Use
login.prg.98NOVpl2.2 for all versions of MIDAS after 97NOV.
Guess session
During your observing run, you have saved a guess session. It is the
moment to restore it with the command @@ getarchive NNNN where
NNNN stands for the number of your guess session. If you forgot to
save one guess session, you can use the following one : guess9857 . Use the getarchive command as
above to convert the FITS files into MIDAS table (tbl) and image (bdf)
files.
Reduction of the data
You have first to set the FEROS Context with the command SET/CONTEXT FEROS.
- Your data are in FITS format ( for example, you ftp'd them directly on your machine )
- Use the @@ init ThArNNNN reset ( NNNN stands for the number of your guess session).
- Fill the ThAr catalogue with the relevant files using the command ADD/ICAT ThAr feroxxxx.mt where xxxx stands for the running number of your file.
- Fill the FF catalogue with the relevant files using the command ADD/ICAT FF feroxxxx.mt
- Start the new DRS with @@ init ThArNNNN start.
- At the end of this operation, you can start to reduce your data with the procedure
@@ autoreduce fero xxxx where
xxxx is the number of the file you want to reduce.
- You can modify the parameters of the session with the command SET/FEROS.
These parameters are displayed with the command SHOW/FEROS.
- Your data are in bdf format (for example, you read them with the command INDISK/FITS )
- Use the @@ init2 ThArNNNN reset ( NNNN stands for the number of your guess session).
- Fill the ThAr catalogue with the relevant files using the command ADD/ICAT ThAr feroxxxx.mt
- Fill the FF catalogue with the relevant files using the command ADD/ICAT FF feroxxxx.mt
- Start the new DRS with @@ init2 ThArNNNN start .
- At the end of this operation, you can start to reduce your data with the procedure @@ autoreduce2 fero xxxx where xxxx is the number of the file you want to reduce.