Baader Clear Focusing Filter - 50.8mm Round Unmounted - FC-RD50 Celestron Labs Celestron C90 MAK Spotting Scope

Celestron C90 MAK Spotting Scope Specifications

making it an excellent choice for both terrestrial and astronomical usage

2" Mirror Diagonal - This high quality 90-degree multicoated mirror diagonal allows you to take advantage of the wider field of view provided by 2" eyepieces

Celestron Outland X 8x25 Binoculars Specifications

Baader Clear Focusing Filter - 50.8mm Round Unmounted - FC-RD50 Celestron Labs Celestron C90 MAK Spotting ScopeAbout the Baader Clear Focusing Filter 50. 8mm Round Unmounted Use of special photography filters, especially narrowband filters, often results in dim images which can be difficult to focus. Baader Planetarium Clear Filters can be used first to clearly focus the image. Since they are parfocal with other Baader filters, they can then be removed and replaced by other imaging filters, without affecting focus. The high optical quality of the Baader