My calculations found next dates:

"Thanks, Bill, my camera is a Stellacam EX with a 1/2 inch Sony
chipset. I understand it is a modification of a Mintron EX which
has a raster of 795x596 but I can not find any specifics on the
pixel size. I appreciate your quick response."

> I had a surprising amount of difficulty in finding the pixel size for
>a Stellacam EX, a.k.a. a Mintron EX. Seems like rather basic data to
>me, but... I eventually dug out a size of 760 by 494 pixels, each
>8.4 by 9.8 microns. If you download
>
>http://www.projectpluto.com/ccds.nam
>
> you'll see the Stellacam EX in the list.
>
> However, you may have seen Berkó Erno"'s post suggesting 12.7 micron
>square pixels. If that's so, the line for the Stellacam EX in the above
>file will need to be modified.

Bill dates calculate Roger's chip size non 1/2inch, only 1/3inch.
Sorry, I make modified file, the actual dates, and I send for Roger.

Berkó Erno

berko@...
http://csillag.bacska.hu