5.4 Corrections for IUESIPS Data

  There are several corrections you may wish to make to your IUESIPS data. Some are due to processing errors; some are due to sensitivity variations not accounted for by the calibrations. NEWSIPS has already accounted for the problems described below, so you will only need these corrections for IUESIPS data.

Note: Users are cautioned that IUESIPS has evolved considerably during the lifetime of the IUE project. Depending on what you are doing, it may not be wise to compare data processed at different times. The data set is not homogeneous!

Here is a brief summary of the corrections described herein, along with references for further information:

SENSCOR

Sensitivity degradation correction for LWR low dispersion data performed during IUESPEC.

• Clavel,J. , Gilmozzi,R. , and Prieto,A. , 1985, IUE NASA Newsletter 27, pp.  50-59.

DCCOR

Wavelength correction due to faulty dispersion constants.

• Thompson,R. , 1988, IUE NASA Newsletter 35, pp.  108-136.
• Garhart,M. P. , 1991, IUE NASA Newsletter 46, pp.  31-54.

RBSENSCOR

Sensitivity degradation correction for LWR and SWP low dispersion data.

LWR

Bohlin,R. C.  and Grillmair,C. J. , 1988, IUE NASA Newsletter 35, pp.  161-199.

SWP

Bohlin,R. C.  and Grillmair,C. J. , 1988, IUE NASA Newsletter 33, pp.  28-56.

LWPCORFLUX

Sensitivity degradation correction for post-1984.5 LWP low dispersion data.

• Teays,T. J.  and Garhart,M. P. , 1990, IUE NASA Newsletter 41, pp.  94-115.

IUEVEL

Heliocentric velocity correction for high dispersion data.

• Taylor,L. L. , 1993, IUE NASA Newsletter 50, pp.  2-8.

LWPFIX

Converts LWP large aperture point source data calibrated with an older calibration to a newer calibration.

• Oliversen,N. , 1988, IUE NASA Newsletter 35, pp.  55-72.