|
hi rev..... are you a creationist or an evolutionist ha ha!
just kiddin'........ anyhoo the least expensive is just to set it up on a tripod and record "startrails" this way you can really see how the stars (earth?) moves on some manual 30s exposures
then there would be the "barn door" tracker, a sort of home made setup that can track the sky and works quite well for widefield photos...... after that well... depends on how deep your pockets are!
pat
|