Pixel Size readings.

supernova_search Aug 9, 2002

Dear Bill.
Something I am not sure about is the pixel size display for the
Starlight Express Camera.
I have a Starlight express MX916 CCD camera.
I use it in the binned 2 x 2 mode.
The image created is a 376 x 290 format.
The pixel sizes quoted in Guide when I enter 2 x 2 binned gives them
as;
6.84" x 6.60" or arc. This is out by a factor of two (higher value)
to what I have measured them as below.

My focal length which is 1399.9999mm giving a field of view of,
21.42' x 15.95' = 1285.2"secs of arc x 957" secs of arc.

1285.2 / 376 gives 3.42" per pixel
957 / 290 gives 3.3 " per pixel

Many thanks John.

NB:On another note. Thanks for the information off the message board
on "Reading the USNO-A2 direct off the hard drive". Thats a really
useful not having to put in the CD-Roms all the time.