Re: LPI vs Toucam?


"Chris Taylor" <nothing@xxxxxxxxxxx> wrote in message
news:nHgXe.6170$1A.225@xxxxxxxxxxxxxxxxxxxxxxx
>
> "Robin Leadbeater" <robin_astro@xxxxxxxxxxxxxxxxx> wrote in message
> news:dgjt4o$22m$1@xxxxxxxxxxxxxxxxxxxxxxx
> >
> > Hi Chris,
> > Based on past results the best Mars images are probably going to be
taken
> > with a Toucam or an ATIK 1HS.
>
> Hi Robin
>
> Thanks for the response
>
> I've found a couple of Toucam Pro II 740K and 840K webcam's for sale. This
> might do the trick for this Mars opposition. Do you know if there's any
> functional difference between the two?
>

The 740 is the original Toucam Pro, (cream case) The 840 is the Pro II
(silver case) No functional difference AFAIK. Just the case. In fact IMO the
740 is the better bet as the USB cable is longer. You will need a eyepiece
adapter. An IR blocking filter is useful to help get the colours right and
to minimise atmospheric chromatic abberation and is essential if you are
using an achromatic refractor, though the filter on the back of the lens
could be removed and pressed into service, mounted at the bottom of the
adapter at a pinch.

Robin




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