Subtract background from off-source columns in LRS slitless

[stscijgbot-jp]

Issue JP-3814 was created on JIRA by Greg Sloan:

If an LRS slitless image has no associated background image, then obtain and subtract a background from the off-source columns in the science image. This step will require a modified aperture correction and column stops for the nominal source aperture and background apertures (one to each side of the source aperture).

[stscijgbot-jp]

Comment by David Law on JIRA:

Alternatively, always subtract a background from off-source columns even if a dedicated background exists and has been subtracted, thus there would be a single aperture correction required.  This is the approach taken by MRS; would this work for LRS as well?

[stscijgbot-jp]

Comment by Greg Sloan on JIRA:

I think we need two separate approaches, but we should confirm the pros and cons. In the meantime, we can work toward the sol'n of using off-source columns to either side of the spectrum of the science target.