SCT Focal Reducers

HyperStar is based on Celestron's innovative Fastar feature.

The HyperStar C11 lens converts a standard Celestron 11" SCT from f/10 to f/1.9, making the system 25 times faster. That means 25-times shorter exposures!

The HyperStar 9.25 lens converts a standard Celestron 9.25" SCT from f/10 to f/2.2, making the system 25 times faster. That means 25-times shorter exposures!

The HyperStar 8 lens converts a standard Celestron 8" SCT from f/10 to f/1.9, making the system 25 times faster. That means 25-times shorter exposures!

Celestron’s new EdgeHD reducers feature a custom 5 element optical design engineered to maintain the flat-field performance of our award winning EdgeHD optical system.

Celestron’s new EdgeHD reducers feature a custom 5 element optical design engineered to maintain the flat-field performance of our award winning EdgeHD optical system.

Item held in excellent condition, glass has minimal to no spots on glass.

HyperStar 6 v4 w/ Filter Slider

Starizona's SCT Corrector has been an incredibly popular focal reducer and coma corrector, giving astrophotographers with standard Schmidt-Cassegrain telescopes an improved optical system and wider field of view, with increased photographic speed.

HyperStar is based on Celestron's innovative Fastar feature.

With the Apex ED reducer, an f/5.5 apo refractor becomes an incredibly fast f/3.6 astrograph. A slower f/9 telescope like an RC becomes a speedy f/5.9 system.

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

Tele Vue SCT Rich Field Kit Schmidt Cassegrain Package (10% Savings)

The EdgeHD .7x Focal Reducer Lens makes your EdgeHD 800 one full f-stop faster than f/10, doubling the equivalent exposure at f/10

The SCT Corrector has a reduction factor of 0.63x, but the C6 and C8 are actually closer to f/11 natively, and they have a shorter backfocus compared to the larger scopes so the reduction is a bit less. The C14 is f/11 natively.

This combination focal reducer and field corrector lens accessory works with all Celestron 5", 6", 8", 9 1/4", 11" and 14" Schmidt-Cassegrain telescopes.

Antares SCT Focal Reducer f6.3

HyperStar Camera Adapters