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Hi Brian, the amp glow should be able to be calibrated out reliably if the camera is cooled as the calibration masters should if possible be done at the same gain, offset, exposure length and temperature. With an uncooled camera this is more difficult to achieve and may require darks to be done in the same evening as the lights which is a pain. Either that or a note made of the ambient temp and try to approximately replicate when doing darks especially.
The exposure will make the amp glow worse but if the darks are addressing all the above variables the amp glow should calibrate out well.
I don't have the 183 but do have a 294 which if anything has even worse amp glow but still calibrates out (I have used up to 300 sec exposures) so I don't think that you should worry about amp glow being a factor.
Having said all that the 533 does look nice. Getting advice if something goes wrong is always more difficult with newly released gear.
Mike
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