IBIS Sample Input Files

What follows are two examples of input to IBIS. Both are valid and will produce identical results. The first example contains comments about each input parameter and value, and is useful for beginners. However, once you have become familiar with IBIS and IRSKY, you may not want to include so many comments, so the second example contains just the list of keywords and values necessary to run IBIS.

Use Internet e-mail to send formatted requests to

    ibis@ipac.caltech.edu
Responses will be mailed back to the sender of the request - make sure your e-mail is sent with a correct and interpretable return address!

Example #1


# Sample input data BEGINS HERE
# Lines beginning with # are comments and are echoed to output
# elsewhere # is treated as the end of data and
# the rest of the line is ignored.

# Blank lines are treated as comments.

# Observing aperature size (will default to 2.0e-8)
aperture  2.36e-1
# units for above ( steradian - default,  arcmin^2 ,  arcsec^2 )
aperture_units arcmin^2
#
# Offset of the reference beam (used by cirrus confusion calculator)
# given as ratio  Offset:Effective diameter of aperture
reference_offset  2.0

# output units for fluxes
# ( MJy/Sr , Jy/arcmin^2 , mJy/arcsec^2 , Jy/aperture )
#flux_units Jy/aperture
flux_units MJy/Sr

# These are true/false,yes/no,1/0 values that select which
# calculators will be invoked (affirmative values)
# The default is to do all of them.
do_bkgnd   yes
do_cirrus  yes
do_galaxy  yes

input_coordinates  Galactic
#
# Equinox of input coordinates (ignored for galactic coordinates)
# Use forms like  J2000  or B1950
input_equinox B1950

# wavelengths of interest in micrometers (um, microns)
wavelength  180  45

# Search catalogs by giving the catalog name and the search radius.
# For the HST Guide Star Catalog, you can specify a magnitude threshold, also.

search_gsc yes
gsc_radius 30
gsc_mag 9

search_iso yes
iso_radius 29

search_fsc yes
fsc_radius 25

search_psc yes
psc_radius 27



# Sources are entered by position, longitude first, then latitude separated
# by "whitespace" which can be space characters or tabs.
# columns do not need to line-up.

# ARP 220  15h32m47.30s  +23d40m06.0s (B1950)
36.62706d  53.02687d  # (Galactic coords)

# Now change 2 parameters (search_gsc and input_coordinates) 
# and run all the other previously specified IBIS functions for a new position.

search_gsc no

input_coordinates  Equatorial

# Somewhere in Orion
5h32m20.11s -5d02m59.2s

# End of Sample file.

Example #2


aperture  2.36e-1
aperture_units arcmin^2
reference_offset  2.0
flux_units MJy/Sr
do_bkgnd   yes
do_cirrus  yes
do_galaxy  yes
input_coordinates  Galactic
input_equinox B1950
wavelength  180 45
search_gsc yes
gsc_radius 30
gsc_mag 9
search_iso yes
iso_radius 29
search_fsc yes
fsc_radius 25
search_psc yes
psc_radius 27
36.62706d  53.02687d  
search_gsc no
input_coordinates  Equatorial
5h32m20.11s -5d02m59.2s

See Also:


R. Booth Hartley - Infrared Processing and Analysis Center

Last updated 19-February-1999