Astro Essentials 0.5x 2" Focal Reducer

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About this product

Astro Essentials 0.5x 2" Focal Reducer

Designed and manufactured by Guan Sheng Optical (GSO) in Taiwan. 

This useful 0.5x focal reducer can be used with a wide range of modern CCD cameras and eyepieces. 

The doublet optical system features fully multicoated glass elements for enhanced contrast. 

The 2" / M48x0.75 filter-thread screws into regular 2" eyepieces, cameras and other photographic accessories to achieve a 40% increase in field of view. 

Effectively reduces the focal telescope's focal length by 50%. 

NOTE 1: The exact focal reduction varies slightly depending on the position of the Focal Reducer relative to the eyepiece' optics or, when imaging, to the camera's imaging sensor. 

NOTE 2: Not recommended for short focal ratio systems. 

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