Quote:
Originally Posted by Slawomir
Fair enough - my bad with subtracting read noise  I had subtracting master bias in mind, and that would normally add more noise anyway...
The part I do not understand though, is why 1600 has over 11 bits of dynamic range available per sub. Is the read noise really as low as less than 1 bit per sub? Why then these chips saturate so quickly, while a CCD with even smaller pixels and with a greater read noise takes significantly longer to saturate pixels? Sorry for being so thick and thus slow to understand... |
It is all to do with well depth. At a Gain of 76 it has a well depth of about 9000e- which is shallow but also has a RN of about 2.2e-. This gives a 12 bit dynamic range.
An FLI 16803 with a 100,000e- well depth and 8e- RN has a dynamic range of 13.61 bits.