CCD-world: CTE and linearity of KAF-4201

[Zoran Ninkov]

The following was posted to CCD-world:


in reply to :

We have by now installed two Kodak KAF-4201 CCDs in astronomical
cameras.
In most respects they behave nicely, but they appear to a problem with
vertical
CTE and low level linearity.

------

We have been using two KF 4200 (2K x 2K) CCD and a KF16800 (4Kx 4K) CCD
systems for some time for astronomical imaging (e.g. in cluster
photometry A&A S [1996] 119, 221 , in speckle imaging AJ [1997] 114,
2117 & AJ [1999] 117, 548 and in hyperspectral imaging of clusters
[1999] PASP 111, 759 ) with good results.

A few years ago we received a KF 4200 with some of the same problems you
have reported on in CCD world.  Our results are to be found in Optical
Engineering [1995] 34, 43 .  We eventually tested a number of these
arrays and found some had the poor CTE and low light non-linearity,
while others did not.  Tom Lee at Kodak traced this problem to a
manufacturing problem on specific wafer runs at Kodak.  From your e-mail
I suggest that you may received some less than excellent examples of
these devices that arise from a similar problem.  Its probably worth
contacting the appropriate technical people at Kodak with your concern.

Zoran


--

Dr. Zoran Ninkov
Center for Imaging Science
Rochester Institute of Technology
54 Lomb Memorial Drive
Rochester
NY 14623-5604
U.S.A.

Telephone :  716 - 475 7195
Fax       :  716 - 475 5988
e-mail    :  ninkov at cis.rit.edu
- -- CCD-world -- --
CCD-world is fully moderated. Send posts to CCD-world at astro.ku.dk
Standard replies will go to the list; address personal replies manually.
For more information, please go to:  http://www.not.iac.es/CCD-world/