Quote:
Originally Posted by Juliano
 Leinad
I just recieved my 8" skywatcher dob and on the primary mirror there are three Phillips head screws (for adjusting) and three small black hex grub screws to lock the primary mirror.
At first i did not notice these, but i had a closer look and they were there. |
Hi Juliano, had a closer inspection and yes there they are! And first glance the look just like threads, but upon a closer look with the torch, yes they are the hex bolts (locking screws)
One thing that confuses me is that I was able to adjust the primary mirror with the silver screws and these locking threads didnt seem to have any impact on the locked mirror?
The scope is brand new, so Im not sure whether this is normal, or the locking screws should not affect the primary mirror adjustment at all when turning the adjustment screws.
So when collimating. Must the hex screws be loosened fully? and screws adjusted. Then afterwards must these be screwed up with slight tension ?
Would it be that these locking thread bolts arent tesnsion tight at the moment and that is why adjusting the silver screws allowed the mirror to be adjusted?