Adjusting the focuser, the images can be made to overlap, forming a single bright, clear picture.

To help the felt sense form and to accurately identify its meaning, the focuser tries out words that might express it.

The cylinder case of dual speed focuser is fixed on the telescope tube.

All the transmission inside dual speed focuser is achieved via static friction.

"The focuser is almost always the one at greatest risk in such a situation because his role is essentially passive.

On the other side, the axle from Crayford focuser is connected to the holder shelf.

"Daniel was a great focuser for the film," says Mr. Sheridan.

One type of focuser used by various instruments on the ground and in space is based on "grazing incidence" mirrors.

Aft, the focuser for her jet traced out, with its framework, a graceful tulip shape.

It consists of a peephole to be inserted into the focuser in place of the eyepiece.

The Crayford focuser is a simplified focusing mechanism for amateur astronomical telescopes.

Dual speed focuser design borrows the planetary gearing idea used in automobile gearboxs.

The original Crayford Focuser is on display there.

The sociolinguistic distribution of and attitudes toward focuser like and quotative like.

Shanghai Online Observatory Forum explaining how Dual speed focuser work.

The Dual speed focuser is focusing mechanism in precision optics such as advanced amateur astronomical telescopes or laboratory microscopes.

Another common reason to employ dual-speed focuser is the use of low focal length eyepieces, where the focus depth is short, requiring accurate focusing.

Automatic telescope and focuser control using ASCOM.

The Crayford is similar in appearance to a Rack and pinion focuser, but has no teeth on either the rack or the pinion.

Generally speaking, but not always, the focuser has his eyes closed, in order to more accurately focus inwardly on his "felt sense" and the shifts that take place from it.

Using a combination of mount, focuser and imaging device ASCOM drivers, it is possible to build a fully automated environment for deep sky imaging.

The Galileoscope uses a 1 -inch focuser, giving the telescope a great deal of versatility, since this is the standard size for eyepieces used in most amateur- and some professional telescopes.

The Crayford focuser design is reminiscent of the Dobsonian design for telescopes, since instead of precision machining, it relies on geometry to preclude any wobble or backlash.

The Collapsible Dobsonians also feature Crayford focusers instead of the traditional rack and pinion focuser that was included with the Solid-Tube Dobsonians.