JITTER
Name
jitter
Purpose (one Line)
Generate a jitter convolution kernel for one WFPC2 observation.
Description
Given an observation, read its associated jitter file and create
a convolution kernel that matches the tracking/jitter history
of the object. This is setup for either a sidereal object or
planetary object.
Category
CCD data processing
Calling Sequence
jitter, visitid, imgid
Inputs
Optional Input Parameters
visitid : If specified, the images corresponding to the visitid
will be refit. Otherwise, all images in kbobin.object
will be refit based on the setting of the FORCE flag.
imgid : If specified, a single image, within the visit specified
by visitd, will be refit. Otherwise all images are processed
within the visit (or all images in kbobin.object). It is
an error to specify imgid without visitid.
Keyword Parameters
PATH - Path to directory in which compressed fits files
of the form rootname_c0f.fits.gz exist.
Default is /net/frakir/data1/grundy/hst_binaries/c0f.
SAMPFACT- sub-sampling factor for kernel, default=3
PROGRAM - String that identifies the program ID, default='u9zo' (Will's
cycle 16 large program)
Outputs
kernel - Output convolution kernel
Common Blocks
Side Effects
Uses HST PSF images which may cause the memory and disk PSF caches to be
populated. Modifies entries in KBOBIN data base table postable. These entries
reflect the most recent values obtained from the fit,
Restrictions
Ephemeris is geocentric, not HST-centric
Assumes data is from WFPC2
Procedure
Modification History
2008/04/22, Written by Marc W. Buie, Lowell Observatory