Baader Clear Focusing Filter - Round Mounted - FC- Telescope Covers or Celestron''s PowerTank receptacle

or Celestron''s PowerTank receptacle

As a result

Celestron Product Number: 91036-XLT

5 inches long

All coated glass optical elements for clear

Baader Clear Focusing Filter - Round Mounted - FC- Telescope Covers or Celestron''s PowerTank receptacleAbout the Baader Clear Focusing Filter Round Mounted 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 Planetarium