This version of the HyperStar lens includes the Starizona Filter Slider for easy use of multiple filters without removing the camera. The appropriate camera adapter is included (select under Options below).
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. See this video for a demonstration.
The HyperStar C9.25 lens converts a Celestron Edge HD 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.
What telescopes are compatible?
The Edge HD 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.
- 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.
HyperStar C9.25 HD Fork-Mounted OTA Instructions
HyperStar C9.25 HD German EQ-Mounted OTA Instructions
Select the camera model you will use below. The HyperStar includes one camera adapter of your choice.
Select the telescope mount you have below. If you have a CPC Deluxe HD fork-mounted model, select the first option. If you have a CGEM HD or CGE Pro HD model, or an Edge HD OTA on any other type of German Equatorial Mount, choose the second option.