More Processing Problems

Band-aids upon Band-aids - or how to grow a really big 'A' with too much 'CYA'

Problem 1 - plateauing in CCD frames



Problem 2 - ghost peaks (the 586cm^-1 peak is a ghost of 841cm^-1 peak from an earlier CCD frame)



Solutions?


Crocoite - Dundas Tasmania

 
This plot has an average dark frame subtracted from each individual frame (alternating colors)
to avoid the "plateauing" problem . Also, the CCD is flushed with a dark scan prior to each 
frame exposure to get rid of image ghosts.

Notes: 
S-G smoothing and B-ALS baseline correction were not applied in this last image.

The plateauing problem in each frame (blue) should be tested more thoroughly 
to determine what is causing such an extreme variation across the pixels in 
a dark frame.

A third problem is apparent in the "chunked" processing of the first image:
the ends of each chunk (green) should match up. The system memory has been
doubled which will hopefully eliminate the need for processing the whole
spectrum in chunks.


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