Products

This Questar slip-fit adapter lets you use a 1.25" image erecting diagonal with a Questar 3.5" telescope or spotting scope.This Questar 1.25" slip-...

This is an excellent medium high to high power eyepiece (108x and 162x in the 3.5" Questar) for observing lunar and planetary detail, resolving glo...

This is an excellent medium power eyepiece for lunar observing, resolving globular clusters, picking up details in the more compact emission and re...

This 2" Questar star diagonal allows the use of 2" eyepieces with the 7" Questar Maksutov. Its 1/20th wave first surface quartz mirror has silver m...

This is an excellent medium to low power eyepiece (53x and 80x in the 3.5" Questar) for lunar observing, resolving globular clusters, viewing the m...

This Questar 3.5" camera coupling set consists of a swivel coupling and three adapter tubes in various lengths that stack together in various combi...

This Questar full aperture white light glass solar filter lets you safely observe fine detail on the surface of the Sun - sunspots, granulation, et...

For the serious amateur astronomer who would like to take Questar quality into the field for nature studies and photography, as well as for unsurpa...

For the serious amateur astronomer who would like to take Questar quality into the field for nature studies and photography, as well as for unsurpa...

For the serious amateur astronomer who would like to take Questar quality into the field for nature studies and photography in all climate extremes...

For the serious amateur astronomer who would like to take Questar quality into the field for nature studies and photography in all climate extremes...

For the serious amateur astronomer who would like to take Questar quality into the field for nature studies and photography, as well as for unsurpa...

For the serious amateur astronomer who would like to take Questar quality into the field for nature studies and photography, as well as for unsurpa...

In 1950, Questar introduced the first truly portable, lightweight, 3.5" astronomical telescope. Regarded as the finest personal telescope in the wo...

In 1950, Questar introduced the first truly portable, lightweight, 3.5" astronomical telescope. Regarded as the finest personal telescope in the wo...

In 1950, Questar introduced the first truly portable, lightweight, 3.5" astronomical telescope. Regarded as the finest personal telescope in the wo...

There can be only one best small telescope in the world. This world-class broadband-coated/Zerodur mirror Questar 3.5" Maksutov-Cassegrain with its...

Optical theory says that a Questar should not be able to resolve lunar craterlets and rilles under 1.3 arc seconds across - yet there are countless...

With the factory-installed addition of the normally-optional battery-operated Powerguide III drive system, the standard Questar 3.5" Maksutov-Casse...

This is an excellent low power eyepiece for capturing galaxy pairs and compact galaxy clusters, viewing emission and reflection nebulas and smaller...

This premium Questar 45° viewing angle image erecting diagonal fits into the back of any Questar 3.5" scope to provide upright and correctly left-t...