WHAT'S NEW IN ISAP VERSION 2.0 and 2.0a
Up-to-date Processing
Pipeline 8 calibration files (RSRF: LCGR.FITS; CAL25*030.FITS)
are available from the /isap/data area using the FITS Read option.
The "Dark" option of Shift for LWS will use the appropriate
pipeline (7 or 8) RSRF file.
Files From Other Spectrometers - Generalized Routines
Read-in capability now exists for CAM-CVF data (in conjunction
with CIA routines) and improved read-in capability exists for PHT-S data.
The transmission profiles for the SIRTF instruments: IRAC
(InfraRed Array Camera) and MIPS (Multiband Imaging Photometer for SIRTF)
are now available in their preliminary versions in the Synthetic Photometry
package. (Refer to the User's Manuals for IRAC and MIPS for more details
and updates.)
Routines now exist that read in simple ASCII spectra,
and many routines have been modified to operate on such spectra and require
few or no keywords. See Documentation available in /doc/recipes and on
the ISAP home page.
The internal "Feeder-merger" routine is now used for the
advanced routines: Average; Clip; Smooth; Norm; Rebin. Feeder-merger strips
away the YAAAR data structure before processing arrays, and reassembles
the structure afterward. Thus, these advanced routines now process simple
arrays, and in principle, may be used independently of ISAP.
LWS
The user may now apply a "Small source to Large source Correction"
for LWS data (a new special function). Standard pipeline (OLP 7,8) data
always contains the former.
The user may now apply an aperture vs. wavelength correction
for LWS, as a refined correction to the standard Pipeline processing (for
OLP 7,8)
Zodiacal Light
The Zodiacal light predictor (based on the J. Good IRAS Model)
has been generalized to handle spectra from ISO or any other mission, so
long as FITS keywords for RA, Dec, and Date are present.
The Zodiacal light predictor can re-introduce the FIR
offsets found in the IRAS dataset, as a function of wavelength.
Line Fit
Lorentzian fitting is now supported (which is useful for
PAH's in CAM, etc.)
The enhanced line list in line-fit now includes many mid-IR
Unidentified Bands (aka PAHs) and some FIR Unidentified Lines
multiple lines can now be fit while freeing one lambda
and constraining a fixed delta lambda to exist between fitted components
Flux vs. Intensity (or Brightness)
Flux per steradian (Intensity) is now allowed as a unit and
is carried through routines
The user may now convert between intensity and flux, by
specifying aperture.
Shift
There is an enhanced Shift routine that handles lines and
scans as desired (to obtain mean values, overlap values, etc.) - a convenience
for SWS, and LWS processing.
New Clipping Routine
The User may clip many sigma data points without averaging
using the standalone graphical Clip routine.
Adding Tags
New tags may be added to structures (a special function).
Merging Data Sets
There is now convenient merging of groups of spectra - under
Special Functions at the lower right on the main window.
Window Layout
To help with situations where ISAP windows overflow a user's
screen, resizable plot windows are now enabled. Also, there exists a window
scroll bar option in the start-up file. (See the WEB page: known bugs)
Finally, better widget layouts of rebin and average have been implemented.
Other New Conveniences
There is the new option to identify "sticky" or preselected
functions. These allow operations such as data zapping, selecting, etc.
to be repeated without respecifying the function each time. The Preselect
button is located at the lower right on the main window.
When there are dual plots, side by side, the user may
now bring the range of one plot to the other with the "Copied Range" button
The stored data sets are now listed on a scrolled window
Documentation
There are now updated and improved reduction recipes for
LWS and SWS delivered in the /isap/doc/recipes area
All of the existing Web Documentation is delivered as
postscript files in the /isap/doc/user_man area
A Programmer's Manual is delivered in postscript for future
developers in the /isap/doc/prog_man area (although the online html version
contains links).
Last Modified 19-May-2000