Gear Database

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.

telescope $$ Small refractors Travel kit Wide-field nebulae
Sharpstar 61EDPH III Triplet APO

Best Current Offer

High Point Scientific logo
High Point Scientific
In stock
$605.00

Other retailers

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 logo
High Point Scientific
High Point Scientific
$605.00
In stock
Updated 5/15/2026
View Offer - $605.00
Agena AstroProducts logo
Agena AstroProducts
Agena AstroProducts
$603.90
Out of stock
Updated 5/14/2026
View Offer - $603.90