Sharpstar 61EDPH III Triplet APO
Sharpstar
Sharpstar 61EDPH III is a 61 mm Triplet ED APO refractor for wide-to-mid-field nebulae and general deep-sky imaging.
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Specifications
Optics
- Optical design
- Triplet ED APO refractor
- Aperture
- 61 mm
- Focal length
- 360 mm
- Focal ratio
- f/5.9
- Dawes limit
- 1.9"
- Glass / elements
- Triplet ED APO
Specifications
- Focuser
- 2.5"
Imaging
- Image circle
- 44 mm
- Camera format
- Full frame with reducer/flattener
- Full-frame coverage
- Yes
- Back focus
- 55 mm with matching reducer/flattener
- Reducer / flattener
- Optional 0.75× reducer: 270 mm at f/4.4
Astrophotography Fit
Best for wide-to-mid-field nebulae and general deep-sky imaging when the mount, camera format, and correction hardware are chosen as one system.
Sharpstar 61EDPH III sits in the telescope slot for wide-to-mid-field nebulae and general deep-sky imaging. The useful headline specs are aperture 61 mm, focal length 360 mm, f/5.9.
Camera coverage: Full frame with reducer/flattener. Image circle: 44 mm. Back focus: 55 mm with matching reducer/flattener.
Refractors keep the field routine calmer: no regular collimation, predictable cooldown, and a clean path to autofocus and filtered imaging. The tradeoff is aperture and reach.
Best paired with
- Corrected field flattener or reducer when the design requires one
- Cooled APS-C or smaller astro cameras matched to the image circle
- Autofocus, guide scope or OAG, and a mount with comfortable payload margin
Not recommended for
- Large full-frame sensors unless the corrected field supports them
- Very small travel mounts near their realistic imaging payload limit
- Buyers expecting one telescope to be ideal for every target size
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 |
|---|---|---|---|
| High Point Scientific High Point Scientific | $605.00 | In stock Updated 5/15/2026 | View Offer - $605.00 |
| Agena AstroProducts Agena AstroProducts | $603.90 | Out of stock Updated 5/14/2026 | View Offer - $603.90 |