The 0.7x Reducer Lens for EdgeHD8 from Celestron adds one full f-stop of exposure speed and broadens the field of view of the 8" configuration of Celestron's EdgeHD optical tube. This telescope accessory has a fully multicoated optical path featuring high-transmission lanthanum glass elements with blackened edges, delivering color faithful images that are contrast-rich and crisp from center to edge. A 105mm back focus distance accommodates additional imaging accessories and a wide range of cameras, including the Nightscape CCD and DSLRs. The 0.7x Reducer Lens has an aluminum housing that is precisely machined to ensure exact spacing and alignment of the optical elements.

 

EdgeHD 9.25"

The EdgeHD .7x Focal Reducer Lens makes your EdgeHD 9.25" one full F-Stop faster than f/10, reducing your exposure time by half to capture the same brightness of object
4-element lens design
Maintains similar flat-field performance as native EdgeHD optical design
Increases field of view by 43% to better capture wide field images
Threads directly onto the 3.25" threads of the EdgeHD which reduces mechanical vignetting and allows for use with larger (full frame) sensors and Off-Axis Guiders
Maintains the identical back focus when used at f/10 and provides generous back focus to accommodate additional accessories and wide variety of cameras
Allows use of existing EdgeHD T-Adapters with or without the Reducer Lens

 

EdgeHD 11"

The EdgeHD .7x Reducer Makes Your EdgeHD 1100 One Full F-Stop Faster Than f/10, Reducing Your Exposure Time by One-Half to Capture the Same Brightness of Object
5-element lens design
Maintains similar flat-field performance as native Edge HD optical design
Increases Field of View by 43% to Better Capture Wide Field Images
Threads Directly onto the 3.25" threads of the EdgeHD which Reduces Mechanical Vignetting and Allows for use with Larger (Full Frame) Sensors and Off-Axis Guiders

 

EdgeHD 14"

5 lens design
Focus reduction while maintaining the optical quality of the HD primary mirror
Field of view increased by 43%
Optimized for most DSLRs and astronomical CCD cameras
Provides a wide 103mm back focus to fit a wider range of accessories and cameras (for HD14)

Optical Performance
0.7x magnification reduction
Increases field of view by 43%
Fully multicoated optics, extra low dispersion lanthanum glass
Blackened lens edges for reduced internal reflection

Use and Handling
Works with DSLRs and Nightscape CCD Cameras
Optimized for APS-C camera sensors
Threaded metal lens covers