|
Retrieving your data
|
This link provides both general information and specific examples on how to retrieve data, whether public or proprietary, from the Spitzer archives.
|
Making a MIPS-24 Mosaic: a Pleides star
|
In this recipe, we use the command-line version of MOPEX to
mosaic small-field 24 micron photometry observations. The target is a
Pleides star observed as part of the Legacy Program "The Formation and
Evolution of Planetary Systems: Placing Our Solar System in Context".
This recipe continues in a source
extraction step.
|
Making a MIPS-24 Mosaic: a galaxy cluster at z = 0.7
|
This link provides a tutorial on how to reduce your MIPS-24 Photomery
Mode observations, from start to finish, including downloading the
data, recognizing artifacts in the downloaded Post-BCD data, and
performing self-calibration to remove these artifacts.
|
MIPS-24 PRF Estimation and Point-Source Extraction
|
This recipe demonstrates how to use the command-line version APEX to
select point sources for PRF estimation, run the PRF estimate tool,
and then use the real PRF for point source extraction. Special care is
taken in removing Airy rings of bright point sources as they create
false detections. The final products are a table of point source
fluxes and a point source subtracted mosaic image.
|
MIPS-24 Source Extraction: MIPSGAL
|
In this recipe, we use primarily the GUI version of MOPEX to
perform aperture photometry on the MIPS 24 micron MIPSGAL data, which
is characterized by a complicated Galactic background.
|
| Correct a poor stimflash calibration in MIPS 70 data |
In this recipe, we use the GeRT to correct for a poor stimflash
calibration in 70 micron photometry observations, before running MOPEX
to create the final mosaic. For those users who are not interested in
diffuse extended emission, such as the ISM, this recipe then continues
in a filtering
step.
|
| Filter MIPS 70 BCD frames for extended targets |
This recipe describes how to use the GeRT to filter your MIPS-70
BCD frames for extended targets, e.g. galaxies. WARNING: users who are
interested in extended background emission such as the ISM should
*not* filter their data, as this type of emission is removed during
the process.
The filtered BCDs (*fbcd.fits) downloaded from the archive and created
automatically with the GeRT are optimised for point sources
only. Users wishing to analyse data of extended sources must either
work on the non-filtered BCD frames (*_bcd.fits), or filter the BCDs
with different parameters. This demonstration follows on from a
previous recipe: Correcting for Bad Stim Flash Calibration in MIPS-70
data, using the same data set. We assume that you have worked through
the previous recipe before beginning this one.
|
| Recover mildly saturated sources in MIPS 70 data |
This recipe describes how to use the GeRT to recover mildly
saturated sources in your MIPS-70 data. MIPS BCDs are created from the
raw data cubes by calculating the slopes of the data ramps for each
pixel. For more information about this, see the MIPS Data Handbook and
Gordon et al. 2005. Normally the BCDs use at least 4 samples to
calculate the slope of the ramp, but if the pixel in question
saturates before the last of these 4 samples, the pixel is flagged and
masked in the BCD frame. The GeRT can be adjusted to re-make the BCDs
using fewer samples, so, for example, pixels that are saturated at 4
samples, but not at 3, are recovered. The GeRT can generate BCDs using
as few as 2 samples.
WARNING: changing the number of samples used to calculate the slope
of the data ramp will affect the calibration of the data. You
must read the 70 micron calibration paper (Gordon et al. 2007, PASP,
119, 1019) if you intend to use the GeRT to recover saturated pixels
in your scientific data.
Obviously there are limits to the correction - pixels that are
saturated before the second sample in the data ramps cannot be
recovered, and so the GeRT can only work in cases of mild
saturation. Here we describe how to re-create the BCDs using only 2
data samples to calculate the slope of the data ramp, so recovering
the flux information from pixels that are mildly saturated in the
postBCD image.
|
Making a MIPS-70 Mosaic: a Pleides star
|
In this recipe, we use the command-line version of MOPEX to mosaic small-field 70 micron photometry observations. The target is a Pleides star observed as part of the Legacy Program "The Formation and Evolution of Planetary Systems: Placing Our Solar System in Context". This recipe continues in a source extraction step.
|
|
Making a MIPS-70 Mosaic: GFLS
|
This recipe shows how to use the command-line version of MOPEX to
create a mosaic of a portion of the MIPS 70-micron scan mode data
obtained as part of the Galactic First Look Survey (GFLS).
|
MIPS-70 Source Extraction: COSMOS
|
A tutorial on how to use APEX to extract PSF Photometry from the
COSMOS 70 micron scan map mosaic.
|
BANDMERGE
|
This recipe demonstrates how to run Bandmerge, the SSC-supported software to combine 2-7 ASCII tables of source positions and fluxes from different wavebands into a single merged data table. |
|
Synthetic Photometry
|
A guide to estimating MIPS 24, 70, and 160 micron synthetic photometry
from template spectra. IDL code is included.
|