Starizona Hyperstar 925 V4

Starizona Hyperstar 925 V4

£1,259.00✓ 2 year warranty


Out of stock due 15-20 working days

About this product

Model:  starizona_hs4_c925_sct
Part Number:  HS4-C925

The HyperStar 925 lens converts a standard or EdgeHD Celestron 9.25" SCT from f/10 to f/2.2, making the system 25x faster!

That means 25x shorter exposures!

Now you can capture deep-sky images without guiding and without an equatorial wedge (in alt-az configuration).

The HyperStar lens shortens the focal length of the telescope, giving a much wider field of view, and giving a greater tolerance of tracking errors, allowing for unguided, alt-az imaging. 

Optical performance is excellent, with a coma-free, flat field of view up to 4.1 degrees wide. 

The HyperStar 9.25 is compatible with a variety of cameras, including CCD, CMOS and DSLRs. 

Covers up to a 28mm sensor size. One adapter is included with the HyperStar lens. 

FLO supplies as standard the ZWO Cooled (Pro) Adaptors that work with ZWO Cameras with 17.5mm Back Focus Distance, however adaptors for other cameras are available upon request including Starizona's range of Variable M42 (T ) Adaptors.

The 925 version is the only one suitable for both a standard and EdgeHD SCT.


  • Focal Ratio: F2.2
  • Focal Length: 525mm
  • Max Image Circle: 28mm
  • Max Field of View: 3.0 Degrees


Do I need the Filter Slider to use Filters with the HyperStar?

No, the standard camera adapter that comes with the HyperStar allows the use of one 2” mounted filter. This is ideal for light pollution or IR/Cut filters when using a one-shot color camera. Although, the Filter Slider is ideal for quick filter changes when using a monochrome camera.

Are HyperStars hard to focus?

HyperStars are no more difficult to focus than any other optical system. HyperStars can be accurately focused with Bahtinov Masks, AutoFocusers (ie MicroTouch Autofocuser), and any software that displays a Full-Width Half-Max star value. Although, the fast F/Ratio does make the camera’s backfocus much more critical. This is why the HyperStar camera adapters need to be precisely within +- .5mm of the camera’s backfocus.

Why do I need to specify my mount type?

We ask for the mount type to determine if you’ll need a counterweight shipped with your HyperStar or not. GEM mounts can accommodate the balance of the HyperStar by shifting the scope forward or backward on the mount, whereas Fork Mounted telescopes can’t move on the mount and require a counterweight.

What telescopes are compatible?

Factory-equipped Fastar-compatible C8 SCT telescopes have a removable secondary mirror assembly, allowing the use of the HyperStar 8 lens. If your scope is an older model and does not have a factory-equiped Faster-compatible secondary mirror you can order a C8 conversion kit to make it HyperStar compatible.

Instructions (pdf)

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