Bias Ramping




Telescope MDM 1.3m
Date 9/29/95
Instrument Nellie
Filter V
Exposure
Time
25
sec
Other unprocessed

Problem:

Bias ramping showing up as a bilevel structure across the chip. Note the horizontal break between the 2 different bias levels.

Fix:

Apply a fit to the overscan region and subtract this out.

A third example of ramping

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