Quote:
Originally Posted by Bassnut
Very interesting. Despite their age 3200 and 6303 chips are still the go for NF/NB imaging IMO, I just cant see anything coming close yet, unless shear MP and FOV are of interest, with seriously less sensitivity and as Paul says, huge money in field correction/other hardware.
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The KAF3200 is 80% QE 55,000 electron well capacity 6.6um pixels ABG
The KAF6303 is 65% peak QE 100,000 well capacity 9um pixels non-ABG
The KAF8300 is 61% QE in a FLI with no cover slip 5.4um pixels ABG
The KAF16803 is 61% QE and 100,000 well capacity 9um pixels ABG
The KAI11002 is 50%QE and 60,000 well capacity ABG
ABG = Antiblooming.
Only KAF chips experience RBI not KAI interline chips. So not a problem with KAI11002.
I personally have not seen its effects in images. Not saying its not doing something but I haven't noticed it.
On paper they are all somewhat of a compromise except for KAF16803 which is a good allround performer. QE of 6303 is no higher overall than 8300 or 16803 but 3200ME is but it comes at a cost of slight microlens spikes (minor). 6303 is not antiblooming which means better for narrowband or limited to shorter exposures in LRGB. 8300 has small wells so again star bloating on bright stars could occur in some setups - again shorter exposure time is the solution.
If RBI is wrecking your images then select a KAI chip for your camera.
Perhaps one of these new Sony 10mp super exHAD chips.
Of the current sensors available I think KAF3200, 6303, 8300 and 16803 are the go and in Interline KAI 11002 and perhaps 29050. There is a 10100 and 8050 one shot colour with the new LRGB matrix for those who want to be pioneers. They could be excellent for imaging and easy to process.
Fred if QE and Narrowband with narrowfield is really your thing you'd be hard pressed to go past the Proline 4240 with back illuminated chip 13um pixels and 95% QE. I am thinking of getting one. Large pixels would be a good match for my CDK17. High QE would be a bonus boosted by the reducer giving F4.45 to the CDK so it would be CDK17 at F4.45 95% QE with large pixels for optimum sampling with my seeing and narrowband would be a breeze.
Greg.