This model is a reproduction of a mobile cubic quadrant that dates back to 1736, and is thought to be the invention of David Beringer of Hapsburg (Germany). It is made up of an articulated arm, which allows us to incline the cube in a North-South direction, and a plumb line on the eastern side that moves along a graduated scale and can be used to adapt the instrument to the latitude of the mesaure.

Kit for a telescope. Length of 38 cm and approx 10 times enlargement. The famous Italian natural scientist Galileo Galilei used at the beginning of the 17th Century as the first telescope toward the starlit skies directed. Simple assembly.

The PENTAX DCF ED binoculars combine Extra Low Dispersion glass elements, full reflection and phase coated prisims, hybrid aspherical lens elements and fully multi coated optics.  Built to last with JIS Class 6 waterproof construction, DCF ED binoculars feature a durable magnesium alloy body and a hard coating to protect exposed lens elements. 

A practical guide to observing Mars, explaining equipment, techniques and timetables and with information about the planet itself. In indispensible guide to getting the most out of your telescope during the next Martian close encounter.

You can double the power of any eyepiece with the 2x Big Barlow, but adding the interface lens brings the pupil back to original position when used with long focal length eyepieces such as the Panoptic 41, 35, or 27mm 2" models. The combination of interface and Big Barlow mimics the Powermate concept.