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SHARCS Feature: Vertical Stripes
Manifestation:
Low level vertical stirpes on ShARCS detector in raw frames, affecting
the entire array, but most noticaebly on the right hand side of the
unvignetted area.
Exacerbated by pixel mask subtraction. First noticed August 2019.
Effect appears to be removed by the subtraction of dithered background
images.
Re-connecting and re-initing, via the sharcs_fe,
Windows..., Setup... menus do not improve the cosmetics.
Cause:
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ShARCS vertical striping, which appears to have changed/appeared between
the lab on 15 August 2019 and mounting on the telescope 16 August 2019,
and remains unchanged now that it is back in the lab.
There is nothing obviously wrong with wiring or other cables.
The feature appears to be stable, so not particularly affecting data as
far as can be determined at this time.
Associated Issues:
Change Log:
- 2019-08-29: Updated.
- 2019-08-19: First version.
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