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Old 15-12-2019, 09:19 AM
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alpal
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Quote:
Originally Posted by Peter Ward View Post


Picked it in one.

Most commercial telescope optics deliver 10 micron (or larger) spot sizes in their central zones, and quickly bloat out to more than two or more times that figure.

Add seeing disturbances and 30 micron will be a good figure on most nights.

75Mp in a 35mm sensor might sound awesome, but the reality is: those 2 micron pixels are doing you no favors at all.

Your can over-sample blurred data as much as you like. It will still look blurred.

However an optical system that delivers say 5 micron spot sizes and superb mount (+AO) that does not smear the incoming starlight beyond what the optics can deliver is FAR more important than megapixels.



Yes Peter,
you own pictures prove that point.


cheers
Allan
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