At 22.36 05/06/00 -0700, Mike wrote:
>...But your thoughts about the spectral sensitivity is a very good position
>that I bet many had not thought of. I wonder if anyone such as your
>self, has made a check using filters to see just what the TC255 really
>comes out to? ....This may be a good experiment if
>someone has a good set of filters they could add to the 1.25" tube and
>make a record of this with known stars?...


Mike
this is a good idea, even if we'll probably reproduce the quantum efficiecy
curve of the chip.
Anyway I don't have the filters.
In my opinion the correct chose of the guide star is more important,
particularly to check its real brightness with various catalogues.

ciao a tutti (hi all)

Guido Pasi
Genova - Italy

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