Specifications for IUE Selections for Scrapbook

Permitted Observing Configurations:

Short-wavelength (SWP) and long-wavelength (LWP, LWR) cameras.

Low and high dispersion modes

Ranked Observing Configurations

Problems:

Limited dynamic range, so both under & overexposures can be a problem.

Possible excessive cosmic ray contamination

Specifications for selected representative dataset:

Second observation after 1986.0 (if applicable). If observations are available only before this date, rank the preference in reverse time order before 1986.0.

Comments:

Low dynamic range means relatively high rate of under/over exposures to be culled out when encountered.
Include high-dispersion observations only for subsequent versions.

Exclusions:

1. 'Engineering' (nulls, flatfields, emission-comparison) and solar system spectra. These correspond to IUE object classes .lt. 10 and .gt. 90.
2. Any spectra not processed through NEWSIPS.