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Hmmm
Not really.
The image for the same focal length will be the same size on the chip.
You need to consider the plate scale ( sec arc/pixel)
The rule of thumb is you need two pixels to record data.
If the pixel is 5 micron, then the minimum data size is 10micron...
Depending on the plate scale ( 1.2 sec/ pixel)this could be equivalent to say 2.4 sec arc, the image is then made up from "blocks" of 2.4 sec arc bits.
The physical size of the sensor doesn't really come into play until you start imaging large objects ie moon, sun DSO etc etc
HTH
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