Celestron EdgeHD 9.25
Celestron
Celestron EdgeHD 9.25 is a 234.95 mm EdgeHD aplanatic Schmidt-Cassegrain for galaxies, planetary work, and other small high-resolution targets.
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Specifications
Optics
- Optical design
- EdgeHD aplanatic Schmidt-Cassegrain
- Aperture
- 234.95 mm
- Focal length
- 2350 mm
- Focal ratio
- f/10
- Dawes limit
- 0.49"
- Glass
- Lanthanum glass
Imaging
- Image circle
- 42 mm
- Camera format
- APS-C / full-frame with careful spacing
- Full-frame coverage
- No
- Back focus
- 146.05 mm
- Reducer / flattener
- Optional 0.7× EdgeHD reducer: 1645 mm at f/7
Mechanical
- Focuser
- Primary mirror focuser with mirror locks
- Weight
- 9.53 kg / 21 lb
- Tube length
- 559 mm
Astrophotography Fit
Best for galaxies, planetary work, and other small high-resolution targets when the mount, camera format, and correction hardware are chosen as one system.
Celestron EdgeHD 9.25 sits in the telescope slot for galaxies, planetary work, and other small high-resolution targets. The useful headline specs are aperture 234.95 mm, focal length 2350 mm, f/10.
Camera coverage: APS-C / full-frame with careful spacing. Image circle: 42 mm. Back focus: 146.05 mm.
Long focal length optics reward patience. Guiding accuracy, seeing, focus stability, mirror behavior, and mount capacity matter more here than they do on small refractors.
Weight matters here: 9.53 kg / 21 lb. Leave payload headroom for the camera, guider, focuser, dew control, and cables instead of judging the mount by bare tube weight alone.
Best paired with
- Heavy-duty GoTo mount with generous imaging payload headroom
- Off-axis guider, sensitive guide camera, and motorized focuser
- Small-pixel planetary cameras or appropriately sized cooled deep-sky cameras
Not recommended for
- Undermounted beginner rigs or windy portable setups
- Large nebula framing without a reducer or mosaic plan
- First deep-sky setup if guiding and collimation still feel unfamiliar
Community Images
Astrophotography examples from Flickr.
Where To Buy
Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.
| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| Cloud Break Optics Cloud Break Optics | $3,099.00 | In stock Updated 5/10/2026 | View Offer - $3,099.00 |
| High Point Scientific High Point Scientific | $3,099.00 | In stock Updated 5/13/2026 | View Offer - $3,099.00 |
| Mile High Astronomy Mile High Astronomy | $3,099.00 | In stock Updated 5/14/2026 | View Offer - $3,099.00 |
| Starizona Starizona | $3,099.00 | In stock Updated 5/15/2026 | View Offer - $3,099.00 |
| Telescopes.net Telescopes.net | $3,099.00 | In stock Updated 5/13/2026 | View Offer - $3,099.00 |