Stef Mientki wrote:
> I agree, but it depends on what your goals are, and what is practical
> realizable.
> Our main goals are (some are just dreams for the moment ;-)
> 1. show the major stars at the current location at the current time (In
> Netherlands you cann't see too many stars ;-)
> 2. show the moon and planets (maybe even some satalites)
> 3. show the accelarated  movement of stars, moon and planets
> 4. show the effect of light polution
> 5. with some kind of pointer, point an area at the dome (I read
> somewhere that LEDs can be used as light sensor, or the old PC-pen
> trick), and the telescope outside moves to the selected area

This sounds like a nice little project, and getting anything working at all
will give a lot of satifaction and learning.  Is there any reason you need
to project onto the inside of a hemisphere like a normal planetarium?  Why
not redefine the star machine to be viewed from outside the sphere?  That
would be a lot more achievable and novel.  After all the other way has been
done before.  You'll still have something cool to show off, perhaps even
better.


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