Quote:
Originally Posted by PCH
Hi Neil,
most brands of dobs have some way of implementing this. All it means is you can adjust the 'slackness' of a) the declination angle of the ota, and b) the effort needed to push the scope around in a circle on it's mount.
As an example, the more things you install at the focuser such as heavier eyepieces or a binoviewer (these are terrific  ), you'll need to tighten up the declination setting a bit, or the focuser end of your new toy will just hit the deck -  . So yes it is very usefull !!
Hope this helps  |
So it is nothing new. Even the old model has one?
I thought it had something to do with reflector adjustment.
And if you like to add red dot finder (designed for paintball rifles):
http://www.dealextreme.com/products.dx/category.910
http://www.dealextreme.com/products.dx/category.914