Questions & Answers for: National Geographic thumb screw

...objective should equal 50x." With advances in telescope technology this is still is a good rule of thumb. The formula is focal length of the scope (in millimetres) divide by your chosen eyepiece ...

service aimerais savoir ou je peu avoir des pieces pour telescope ng76azd You will NOT find parts for that telescope --- try a hardware store for simple missing parts like screws and nuts.

...screws in Dublin ? Any well stocked hardware store will have the proper "thumb" type screw. Take the part with you so you can get the correct thread for the screw. Nothing "special" about the

I cannot see anything and what is the finder scope on top for? New telescope users are taken by surprise at the difficulty of just pointing the telescope in the right direction to see anything. The ...

how do I aline the finderscope Telescope manuals recommend that you do this in daylight, by pointing the scope at an object on the horizon and adjusting the finder to match (never point a telescope ...

monopod ball head loses stability When I put camera on and tighten the screw then lift for overhead shot the camera flops around Is the ball joint getting worn? I'd contact the manufacturer and ...