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SharpStar Optics

SharpStar Optics

SharpStar builds optics aimed squarely at imagers: ED and apochromatic refractors with matched reducers, and fast hyperbolic Newtonian astrographs that deliver bright, flat fields at focal ratios where conventional Newtonians would need heavy correction. The result is a line that competes well above its price bracket for wide-field deep-sky work. David Astro carries SharpStar products in Canada, held in Canadian stock.

Each tube has a dedicated corrector with its own back-focus figure, and matching them correctly is most of what determines your corner stars. Tell us your camera and we will specify the pair.

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CA$3,339.00 - CA$3,339.00
CA$3,339.00
CA$3,339.00 - CA$3,339.00
CA$3,339.00

SharpStar 100QII f/5.8 Quadruplet APO

SSO-100QII

Compare with the first generation products, it has the following features: 1 The optical design has changed, in addition to the original F5.8 foc...

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CA$3,339.00 - CA$3,339.00
CA$3,339.00
CA$3,339.00 - CA$3,339.00
CA$3,339.00
CA$5,319.00 - CA$5,319.00
CA$5,319.00
CA$5,319.00 - CA$5,319.00
CA$5,319.00

SharpStar 121SDQ f/5.6 Quintuplet APO

SSO-121SDQ

This product is a new generation of independent design of quintuple air-spaced high quality refractor telescope which take the form of dual after...

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CA$5,319.00 - CA$5,319.00
CA$5,319.00
CA$5,319.00 - CA$5,319.00
CA$5,319.00
CA$2,303.00 - CA$2,303.00
CA$2,303.00
CA$2,303.00 - CA$2,303.00
CA$2,303.00

SharpStar 130mm f/2.8 HNT Hyperbolic Newtonian Astrograph

SSO-13028HNT-AL
1 in stock

130mm Hyperbolic Newtonian Optics 364mm Focal Length f/2.8 Focal Ratio 44mm Full-Frame Image Circle Total Assembled Weight: 4.8kg Description F...

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CA$2,303.00 - CA$2,303.00
CA$2,303.00
CA$2,303.00 - CA$2,303.00
CA$2,303.00
CA$615.00 - CA$615.00
CA$615.00
CA$615.00 - CA$615.00
CA$615.00

SharpStar 140PH 0.74x Focal Reducer

SSO-140PHFR

Reduces focal ratio to f/4.8 0.74x reduction factor 3-element optical design 44mm corrected image circle Standard 55mm back focus Description F...

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CA$615.00 - CA$615.00
CA$615.00
CA$615.00 - CA$615.00
CA$615.00
CA$6,159.00 - CA$6,159.00
CA$6,159.00
CA$6,159.00 - CA$6,159.00
CA$6,159.00

SharpStar 140PH f/6.5 Triplet APO

SSO-140PH

140mm Aperture 910mm Focal Length f/6.5 Focal Ratio Triplet Air-Spaced APO Objective with Two ED Elements 0.83 arc-seconds Resolution 10.1kg Net W...

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CA$6,159.00 - CA$6,159.00
CA$6,159.00
CA$6,159.00 - CA$6,159.00
CA$6,159.00
CA$2,765.00 - CA$2,765.00
CA$2,765.00
CA$2,765.00 - CA$2,765.00
CA$2,765.00

SharpStar 150mm f/2.8 HNT Hyperbolic Newtonian Astrograph

SSO-15028HNT-AL

Aperture: 150mm Focal Ratio: f/2.8 Image Circle: 44mm Gross Weight: 6 kg Back-Focus: 55mm Description FAQ Specifications In the Box Downloads W...

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CA$2,765.00 - CA$2,765.00
CA$2,765.00
CA$2,765.00 - CA$2,765.00
CA$2,765.00
Sold out
CA$4,193.00 - CA$4,193.00
CA$4,193.00
CA$4,193.00 - CA$4,193.00
CA$4,193.00

SharpStar 200mm f/3.2 PNT Parabolic Newtonian Astrograph

SSO-20032PNT

SHARPSTAR's newly developed ultra-short focal ratio paraboloid Newtonian reflector 20032PNT was launched, which filled a domestic gap in this fie...

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CA$4,193.00 - CA$4,193.00
CA$4,193.00
CA$4,193.00 - CA$4,193.00
CA$4,193.00
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CA$153.00 - CA$153.00
CA$153.00
CA$153.00 - CA$153.00
CA$153.00

SharpStar 50EDPH 0.84x Focal Reducer

SSO-SHREDU50

Reduces telescope focal ratio to f/4.6 Converts focal length to 230mm Quadruplet optical design with field flattening Standard 55mm back focus req...

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CA$153.00 - CA$153.00
CA$153.00
CA$153.00 - CA$153.00
CA$153.00
Sold out
CA$615.00 - CA$615.00
CA$615.00
CA$615.00 - CA$615.00
CA$615.00

SharpStar 50EDPH f/5.5 Triplet APO

SSO-SHEDPH50

50mm Aperture Triplet APO Objective 275mm Focal Length f/5.5 Focal Ratio Includes Two ED Glass Elements 1.07kg Total Weight 196mm Retracted Length...

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CA$615.00 - CA$615.00
CA$615.00
CA$615.00 - CA$615.00
CA$615.00
Sold out
CA$307.00 - CA$307.00
CA$307.00
CA$307.00 - CA$307.00
CA$307.00

SharpStar 61EDPH 0.8x Focal Reducer

SSO-SHRD61

Converts the SharpStar 61EDPH to a fast f/4.5 astrograph Provides a 44mm image circle for full-frame sensor coverage Three-element air-spaced opti...

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CA$307.00 - CA$307.00
CA$307.00
CA$307.00 - CA$307.00
CA$307.00
CA$847.00 - CA$847.00
CA$847.00
CA$847.00 - CA$847.00
CA$847.00

SharpStar 61EDPH II f/5.5 Triplet APO - Discontinued

SSO-61EDPHII

Aperture: 61mm Focal Ratio: f/5.5 Focal Length: 335mm Image Circle: 44mm Weight: 1.9kg (with rings) Description FAQ Specifications In the Box D...

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CA$847.00 - CA$847.00
CA$847.00
CA$847.00 - CA$847.00
CA$847.00
CA$371.00 - CA$371.00
CA$371.00
CA$371.00 - CA$371.00
CA$371.00

SharpStar 76EDPH 0.8x Focal Reducer

SSO-76EDPHFR

Converts 76EDPH to a fast f/4.5 focal ratio Produces a 44mm image circle for full-frame sensors Standard 55mm back focus for easy camera integrati...

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CA$371.00 - CA$371.00
CA$371.00
CA$371.00 - CA$371.00
CA$371.00
CA$497.00 - CA$497.00
CA$497.00
CA$497.00 - CA$497.00
CA$497.00

SharpStar 94EDPH 0.8x Focal Reducer

SSO-94EDPHFR
1 in stock

0.8x Focal Reduction for SharpStar 94EDPH Creates a Fast f/4.4 Optical System 4-Element Optical Design 50mm Corrected Image Circle Standard 55mm B...

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CA$497.00 - CA$497.00
CA$497.00
CA$497.00 - CA$497.00
CA$497.00
CA$2,303.00 - CA$2,303.00
CA$2,303.00
CA$2,303.00 - CA$2,303.00
CA$2,303.00

SharpStar 94EDPH f/5.5 Triplet APO

SSO-94EDPH

Aperture: 94mm Focal Ratio: f/5.5 Focal Length: 517mm Optical Design: Triplet APO with Two ED Elements Weight: 3.3KG Description FAQ Specificat...

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CA$2,303.00 - CA$2,303.00
CA$2,303.00
CA$2,303.00 - CA$2,303.00
CA$2,303.00
CA$77.00 - CA$77.00
CA$77.00
CA$77.00 - CA$77.00
CA$77.00

SharpStar Collimating Eyepiece - 1.25"

SSO-COLL

For Newtonian & Cassegrain Telescopes Fits Standard 1.25" Focusers Enables Precise Optical Alignment Visual Crosshair for Centering Improves I...

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CA$77.00 - CA$77.00
CA$77.00
CA$77.00 - CA$77.00
CA$77.00
CA$168.00 - CA$168.00
CA$168.00
CA$168.00 - CA$168.00
CA$168.00

SharpStar Field Flattener - 2"

SSO-FF2

Designed to fully illuminate APS-C sensor on most APO refractors. The SharpStar 2" field flattener has a M42x0.74 male thread to connect the camera...

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CA$168.00 - CA$168.00
CA$168.00
CA$168.00 - CA$168.00
CA$168.00
CA$273.00 - CA$273.00
CA$273.00
CA$273.00 - CA$273.00
CA$273.00

SharpStar Field Flattener - 2.5"

SSO-FF25

Designed to fully illuminate full frame sensor on most APO refractors. The SharpStar 2.5" field flattener has a M69 male thread to connect the came...

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CA$273.00 - CA$273.00
CA$273.00
CA$273.00 - CA$273.00
CA$273.00
CA$427.00 - CA$427.00
CA$427.00
CA$427.00 - CA$427.00
CA$427.00

SharpStar MPCC Full Frame Coma Corrector

SSO-SH1XMPCC

Corrects coma in Newtonian reflectors from 150mm to 600mm aperture Optimized for fast focal ratios from f/3 to f/6 Provides a 44mm image circle fo...

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CA$427.00 - CA$427.00
CA$427.00
CA$427.00 - CA$427.00
CA$427.00
CA$6,461.00 - CA$6,461.00
CA$6,461.00
CA$6,461.00 - CA$6,461.00
CA$6,461.00

SharpStar SCA260 V2 260mm f/5 Super Cassegrain Astrograph

SSO-SCA260V2

260mm (10.2") Aperture Aspherical Primary Mirror 1300mm Focal Length at a fast f/5 Focal Ratio Massive 80mm Corrected Image Circle for Large Forma...

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CA$6,461.00 - CA$6,461.00
CA$6,461.00
CA$6,461.00 - CA$6,461.00
CA$6,461.00
Sharpstar SCA310 f/3.8 Aspherical Cassegrain Astrograph
CA$11,193.00 - CA$11,193.00
CA$11,193.00
CA$11,193.00 - CA$11,193.00
CA$11,193.00

Sharpstar SCA310 f/3.8 Aspherical Cassegrain Astrograph

SSO-SCA310

310mm Aperture Aspherical Primary Mirror 1178mm Focal Length at a Fast f/3.8 55mm Corrected Image Circle for Medium Format Sensors Triplet Correct...

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CA$11,193.00 - CA$11,193.00
CA$11,193.00
CA$11,193.00 - CA$11,193.00
CA$11,193.00
CA$3,233.00 - CA$3,233.00
CA$3,233.00
CA$3,233.00 - CA$3,233.00
CA$3,233.00

Sharpstar Z4 100mm f/5.5 Sextuplet Apo Astrograph

SSO-Z4

100mm Aperture f/5.5 Focal Ratio / 550mm Focal Length Sextuplet Air-Spaced APO Optical Design 36mm Corrected Image Circle 4.3kg Net Weight Desc...

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CA$3,233.00 - CA$3,233.00
CA$3,233.00
CA$3,233.00 - CA$3,233.00
CA$3,233.00

The SharpStar Range

The catalogue splits between refractors for portable wide-field imaging and fast Newtonian astrographs for maximum light gathering for the price.

  • ED photographic refractors: Compact doublets and triplets from around 60 mm upward, designed with imaging in mind and paired with dedicated flatteners and reducers.
  • Hyperbolic Newtonian astrographs: Fast Newtonians with hyperbolic primaries and integrated correction, giving flat well-corrected fields at focal ratios around f/2.8 to f/4.
  • Matched reducers and flatteners: Model-specific correctors with defined back-focus figures, which must be hit within about a millimetre.
  • Larger aperture refractors: Triplet designs for imagers wanting more focal length while keeping a refractor's convenience and freedom from collimation.
  • Focusers and mechanical accessories: Rotators, extension tubes and dovetails designed to fit the tubes precisely.
  • Speed versus tolerance: The fastest astrographs collect light extraordinarily quickly and demand correspondingly precise collimation and spacing.

Why Choose David Astro for SharpStar Optics

Very fast optics reward precision and punish approximation, which is where the support matters.

  • Corrector spacing supplied: We provide the exact adapter and spacer list for your camera and filters, including the focal shift the filter glass introduces.
  • Collimation expectations set: A fast hyperbolic Newtonian needs tighter collimation than a typical f/6 tube, and we recommend a tool that reaches that accuracy.
  • Sensor coverage checked: We confirm the corrector's image circle covers your sensor before recommending the combination.
  • Authorized dealer: Full manufacturer warranty with verified authenticity, serviced in Canada.
  • Ships from Canada: No duties or brokerage fees for Canadian buyers.

SharpStar in Canada — Frequently Asked Questions

Are very fast astrographs hard to use?
They are less forgiving. Collimation tolerance and back-focus tolerance both tighten as focal ratio drops, so a system that is fine at f/6 needs real care at f/3. The reward is dramatically shorter integration times.
Do I need the matched reducer?
For imaging with anything larger than a small sensor, yes. The refractors have curved focal planes without one, and using a corrector designed for a different tube gives worse results than none at all.
Refractor or hyperbolic Newtonian?
Refractor for simplicity, portability and no collimation. Newtonian for far more aperture and speed at the same cost, accepting collimation as routine maintenance.
Is warranty handled in Canada?
Yes. As an authorized dealer we process warranty and service claims domestically, with no international shipping required.

Specifying a SharpStar setup?

Send us your camera and filters and we will match the tube, corrector and spacing. Domestic shipping, expert support.