Starizona Hyperstar for C9.25 EdgeHD

Introducing the new HyperStar C9.25 Lens. Now 9.25" SCT owners can join the HyperStar revolution. Ultra-fast, wide-field CCD imaging has never been easier. HyperStar quickly converts your SCT into a fast imaging system. The HyperStar lens easily replaces the secondary mirror in the telescope, allowing a camera to be placed in front of the telescope. Switching between HyperStar and standard configurations is quick and simple--no tools required.

Features

The HyperStar C9.25 lens converts a Celestron EdgeHD 9.25" SCT from f/10 to f/2.3, making the system 18 times faster. That means 18-times 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.

The HyperStar C9.25 is compatible with a variety of cameras, including both CCDs and DSLRs. Like the other 8" and larger HyperStar models, the HyperStar C9.25 covers up to a 27mm (APS-size) sensor. Separate adapters are required for different cameras. One adapter is included with the HyperStar lens.

Optical performance is excellent, with a coma-free, flat field of view almost 3 degrees wide.

FAQs

What telescopes are compatible?

The EdgeHD 9.25" SCT telescope has a removable secondary mirror assembly, allowing the use of the HyperStar C9.25 lens.

Why are the other HyperStar lenses faster?

The 9.25" SCT uses a slightly different optical configuration, in order to produce a flatter field of view and have a smaller central obstruction. This means it uses a slower primary mirror (f/2.3 versus the f/2 mirror in other SCTs). This means the HyperStar has to be slightly slower to retain its excellent optical performance. The difference between f/2.3 and f/2 is negligible.

Specifications

• Focal Ratio: f/2.3
• Focal Length: 540mm
• Maximum Usable Sensor Size: 27mm Diagonal (APS Format)
• Field of View (with 27mm sensor): 2.8 degrees
• DSLR Compatible
• Camera Adapter Threaded for 2" (48mm) Filters
• Backfocus (from mounting thread to focal plane): 59.7mm (2.35")
• Length (without camera adapter): 4.2"
• Diameter: 4.1"
• Weight: 1.8 lbs.