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SHARCS Problem: Bad Image Read-out

Manifestation:

  • Image appears shifted some number of rows down and contains weird/bad colums and rows.
  • Image not representative of target field.
  • Image contains instrumental signatures/electronic noise.
  • Image
    Above: Screen-grab of bad image read-out (2021-03-29, frame s1181.fits).

Solution/Recovery:

Re-start ShARCS server:
  • Subsequent exposures seem fine, so have no idea what caused isolated exposure to have problems and correct itself with no intervention.

Cause:

  • Unknown.

Associated Issues:

Change Log:

2021-03-29: Updated.
2019-01-24: First version.

This document last updated (UTC): Tuesday 04 March 2025