TASS - Eye Have a First Mark IV Picture

Hello everyone,

The official "first" mark IV picture is now up on storm/incoming.  It is a
400 pixel in x by 750 line in y picture of an American Optical Eye chart.

This picture is un binned, and is the upper left hand corner of the frame.
It is about 7% of the whole picture.  It includes all the edges so you can
see what problems there are.  There is lots of dirt on the CCD.  It came 
with no cover and over the couple of years that it has been sitting in 
a drawer and been looked at in the open by everyone (including me) it has
accumulated a lot of dust.  I have not (yet) tried to clean it.  The streaks
are probably not dirt, but I am betting on them being in the CCD.  There is
one obvious vertical bad pixel in this part of the frame.  (There are several
others.)

The format is binary 16 bit integers.  Just 300,000 of them.  But the file
seems to have lost a few, and I am not going to try to transmit it again 
from home.  You experts at reading stuff like this should know that Basic
reverses the bytes from the order of most stuff.  

Each line is 800 bytes long, just 400 signed integers.  There are then
750 (less a few lost in transit?) lines.

The picture was taken with a 57mm focal length, f/1.4 Konica lens.  The
distance to the eye chart was about 11 feet.  Lens was stopped down as 
far as it would go, which I estimate as f/32.  Last marked position is
f/16.  Exposure was as fast as I could remove the lens cap and replace 
it.  About 1/2 second.

Michael, I hope you can decode this and put it up on the home page.

Tom Droege