ctio 4m ccd for echelle spectroscopy
Guest wrote on Feb 21, 2007
Dear IRAF Help Desk,
I am trying to reduce CTIO-4m/echelle data, but can't
find any IRAF task to do so in ctio package.
The chip has two amplifiers, therefore two trim sections
and two bias sections. I can't use ccdproc for this
dataset. Is there any cookbook or guideline in IRAF
to reduce this particular ccd images?
I am guessing that there must be something, because ctio-4m
echelle should be a common instrument, but so far I haven't
found any way to reduce it other than writing my own routine!
Thank you for your help!
thanks,
Serena Kim
~~
Jinyoung Serena Kim
* ~ ~ ~~
/) ~ Steward Observatory Email: serena@as.arizona.edu
/ ) ~ ~ Univ. of Arizona Tel : (520) 626-0187 (W)
_/__)__ ~ ~ Tucson, AZ 85721-0065
\ / USA
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~JSK~~~~~~~~
Post generated using Mail2Forum (http://www.mail2forum.com)
I am trying to reduce CTIO-4m/echelle data, but can't
find any IRAF task to do so in ctio package.
The chip has two amplifiers, therefore two trim sections
and two bias sections. I can't use ccdproc for this
dataset. Is there any cookbook or guideline in IRAF
to reduce this particular ccd images?
I am guessing that there must be something, because ctio-4m
echelle should be a common instrument, but so far I haven't
found any way to reduce it other than writing my own routine!
Thank you for your help!
thanks,
Serena Kim
~~
Jinyoung Serena Kim
* ~ ~ ~~
/) ~ Steward Observatory Email: serena@as.arizona.edu
/ ) ~ ~ Univ. of Arizona Tel : (520) 626-0187 (W)
_/__)__ ~ ~ Tucson, AZ 85721-0065
\ / USA
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~JSK~~~~~~~~
Post generated using Mail2Forum (http://www.mail2forum.com)
spoints wrote on Feb 21, 2007
Serena,
The data can be processed by first loading the ``ared'' package in IRAF
and then loading the ``quad'' package. The data can then be reduced
(i.e., overscan corrected, trimmed, etc) using the task ``quadproc''.
Quadproc essentially works like ccdproc, but is setup to handle data
that has multi-amp readout.
After the data are bias-subtracted and trimmed, you can use the standard
IRAF tasks.
Cheers,
Sean
==========================================================
Sean Points spoints@ctio.noao.edu
National Optical Astronomy Observatory
Cerro Tololo Inter-American Observatory AURA/Chile
Casilla 603 950 N. Cherry Ave.
La Serena, Chile Tucson, AZ 85719-4933
Office Phone: +56-51-205200/205364 FAX number: 520-318-8259
FAX number : +56-51-205212 http://www.ctio.noao.edu/~points
==========================================================
The data can be processed by first loading the ``ared'' package in IRAF
and then loading the ``quad'' package. The data can then be reduced
(i.e., overscan corrected, trimmed, etc) using the task ``quadproc''.
Quadproc essentially works like ccdproc, but is setup to handle data
that has multi-amp readout.
After the data are bias-subtracted and trimmed, you can use the standard
IRAF tasks.
Cheers,
Sean
==========================================================
Sean Points spoints@ctio.noao.edu
National Optical Astronomy Observatory
Cerro Tololo Inter-American Observatory AURA/Chile
Casilla 603 950 N. Cherry Ave.
La Serena, Chile Tucson, AZ 85719-4933
Office Phone: +56-51-205200/205364 FAX number: 520-318-8259
FAX number : +56-51-205212 http://www.ctio.noao.edu/~points
==========================================================
Mike Fitzpatrick wrote on Feb 21, 2007
Additionally, the QUADRED package (under IMRED in the core system) has taken over for ARED. They're very similar functionally, but as far as I know ARED hasn't been updated in quite a while.
-Mike
-Mike
Last post on Feb 21, 2007