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Shelyak

Spectroscopy is the branch of amateur astronomy where a modest telescope still contributes real science. A spectrum reveals what a star is made of, how fast it is moving, and whether something has changed — measurements that are as valuable from a backyard as from a mountaintop. Shelyak Instruments builds the spectrographs that make this accessible. David Astro carries Shelyak products in Canada, in stock, with fast shipping across Canada and worldwide.

Resolution, target brightness and telescope aperture determine which instrument suits you. Tell us what you want to measure and we will match it.

Filtres

Shelyak C-mount to T-mount adapter ring
CA$78.00 - CA$78.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00

Shelyak C-mount to T-mount adapter ring

SHK-BA0034

Connects female C-mount threads (25.4mm) to male T-mount threads (M42x0.75mm) Enables use of larger T-mount cameras on C-mount guide ports or acce...

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CA$78.00 - CA$78.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00
Shelyak C/CS Adapter Ring (5mm Spacer)
CA$56.00 - CA$56.00
CA$56.00
CA$56.00 - CA$56.00
CA$56.00

Shelyak C/CS Adapter Ring (5mm Spacer)

SHK-BA0036

Provides 5mm of critical spacing Adapts C-mount lenses for use on CS-mount cameras Standard C-mount (male) to CS-mount (female) threads Precision-...

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CA$56.00 - CA$56.00
CA$56.00
CA$56.00 - CA$56.00
CA$56.00
Shelyak Cable for hollow cathode lamp
CA$78.00 - CA$78.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00

Shelyak Cable for hollow cathode lamp

SHK-SE0268

Designed for High-Voltage Power Supplies Connects Hollow Cathode Lamps Ensures Secure Electrical Connection Essential for Spectroscopic Calibratio...

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CA$78.00 - CA$78.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00
Shelyak Calibration Optical Fiber - 200µm, 10m
CA$731.00 - CA$731.00
CA$731.00
CA$731.00 - CA$731.00
CA$731.00

Shelyak Calibration Optical Fiber - 200µm, 10m

SHK-PF0019

Core Diameter: 200µm Length: 10 meters Connectors: FC-FC Numerical Aperture: 0.22 Protection: Stainless Steel Sheath Attenuation: <0.5dB ...

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CA$731.00 - CA$731.00
CA$731.00
CA$731.00 - CA$731.00
CA$731.00
Shelyak DC0012 – Oleron 2003
CA$59.00 - CA$59.00
CA$59.00
CA$59.00 - CA$59.00
CA$59.00

Shelyak DC0012 – Oleron 2003

SHK-DC0012

Foundational text from the 2003 Oléron Pro/Am astrophysics school In-depth chapter on the physics of optical spectroscopy Covers the design of ama...

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CA$59.00 - CA$59.00
CA$59.00
CA$59.00 - CA$59.00
CA$59.00
Shelyak DC0029 – Successfully Starting in Astronomical Spectroscopy – A Practical Guide
CA$64.00 - CA$64.00
CA$64.00
CA$64.00 - CA$64.00
CA$64.00

Shelyak DC0029 – Successfully Starting in Astronomical Spectroscopy – A Practical Guide

SHK-DC0029

A Practical Guide for Beginners Covers Equipment Setup Explains Data Acquisition Details Calibration Techniques Focuses on Real-World Application ...

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CA$64.00 - CA$64.00
CA$64.00
CA$64.00 - CA$64.00
CA$64.00
Shelyak eShel Calibration Module
CA$7,882.00 - CA$7,882.00
CA$7,882.00
CA$7,882.00 - CA$7,882.00
CA$7,882.00

Shelyak eShel Calibration Module

SHK-PF0012

Contains Thorium-Argon (ThAr) and Flat-Field Lamps Designed for eShel and Whoppshel Spectroscopes Compatible with other fiber-fed Echelle systems ...

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CA$7,882.00 - CA$7,882.00
CA$7,882.00
CA$7,882.00 - CA$7,882.00
CA$7,882.00
Shelyak eShel III Complete System
CA$31,049.00 - CA$31,049.00
CA$31,049.00
CA$31,049.00 - CA$31,049.00
CA$31,049.00

Shelyak eShel III Complete System

SHK-ES0006

Professional echelle spectrograph system Resolving power of R > 10,000 Covers 390nm to 700nm spectral range Fiber-optic fed for maximum stabili...

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CA$31,049.00 - CA$31,049.00
CA$31,049.00
CA$31,049.00 - CA$31,049.00
CA$31,049.00
Shelyak eShel III Spectroscope
CA$15,573.00 - CA$15,573.00
CA$15,573.00
CA$15,573.00 - CA$15,573.00
CA$15,573.00

Shelyak eShel III Spectroscope

SHK-PF0011

Spectral Range: 390nm to 750nm Instrument Type: Professional Echelle Spectroscope Input: Fiber-Optic Fed Design: Modular Core Component Applicatio...

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CA$15,573.00 - CA$15,573.00
CA$15,573.00
CA$15,573.00 - CA$15,573.00
CA$15,573.00
Shelyak Eyepiece Holder for Guiding
CA$496.00 - CA$496.00
CA$496.00
CA$496.00 - CA$496.00
CA$496.00

Shelyak Eyepiece Holder for Guiding

SHK-SE0135

Enables direct visual guiding for spectrographs Accepts standard 1.25" eyepieces Replaces the need for a dedicated guide camera and software Desig...

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CA$496.00 - CA$496.00
CA$496.00
CA$496.00 - CA$496.00
CA$496.00
Shelyak Fiber Optic Adapter for Alpy 600
CA$230.00 - CA$230.00
CA$230.00
CA$230.00 - CA$230.00
CA$230.00

Shelyak Fiber Optic Adapter for Alpy 600

SHK-SE0131

Connects FC Standard Fiber Optics to the Alpy 600 Spectroscope Replaces the Standard 25µm Slit for Remote Light Injection Enables Bench-Mounted Se...

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CA$230.00 - CA$230.00
CA$230.00
CA$230.00 - CA$230.00
CA$230.00
Shelyak Fiber Optic Connector Kit for UVEX
CA$305.00 - CA$305.00
CA$305.00
CA$305.00 - CA$305.00
CA$305.00

Shelyak Fiber Optic Connector Kit for UVEX

SHK-SE0238

Adapts the Shelyak UVEX spectrograph for fiber optic input Enables physical separation of the telescope and spectrograph Ideal for permanent obser...

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CA$305.00 - CA$305.00
CA$305.00
CA$305.00 - CA$305.00
CA$305.00
Shelyak FIGU F/6 – 50µm Fiber Injection and Guiding Unit
CA$4,959.00 - CA$4,959.00
CA$4,959.00
CA$4,959.00 - CA$4,959.00
CA$4,959.00

Shelyak FIGU F/6 – 50µm Fiber Injection and Guiding Unit

SHK-PF0008

eShel Spectrograph Interface: Mounts at the telescope focus to feed starlight into the required optical fiber for Shelyak eShel and Whoppshel syst...

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CA$4,959.00 - CA$4,959.00
CA$4,959.00
CA$4,959.00 - CA$4,959.00
CA$4,959.00
Shelyak FIGU F/9 – 50µm Fiber Injection & Guiding Unit
CA$6,168.00 - CA$6,168.00
CA$6,168.00
CA$6,168.00 - CA$6,168.00
CA$6,168.00

Shelyak FIGU F/9 – 50µm Fiber Injection & Guiding Unit

SHK-PF0018

Optimized for F/9 telescope optical systems Injects starlight into a 50µm core optical fiber Integrated guiding port for precise target centering ...

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CA$6,168.00 - CA$6,168.00
CA$6,168.00
CA$6,168.00 - CA$6,168.00
CA$6,168.00
Shelyak Grating module for the Lhires III - 1200 l/mm
CA$1,018.00 - CA$1,018.00
CA$1,018.00
CA$1,018.00 - CA$1,018.00
CA$1,018.00

Shelyak Grating module for the Lhires III - 1200 l/mm

SHK-SE0006

1200 lines/mm Grating Direct-Fit Module for Lhires III Expands Spectrograph Wavelength Coverage Ideal for Spectroscopic Surveys Interchangeable wi...

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CA$1,018.00 - CA$1,018.00
CA$1,018.00
CA$1,018.00 - CA$1,018.00
CA$1,018.00
Shelyak Grating module for the Lhires III - 150 l/mm
CA$1,018.00 - CA$1,018.00
CA$1,018.00
CA$1,018.00 - CA$1,018.00
CA$1,018.00

Shelyak Grating module for the Lhires III - 150 l/mm

SHK-SE0009

150 lines/mm Grating Low Resolution / Wide Spectral Range Designed for the Shelyak Lhires III Spectroscope Enables Faint Object Spectroscopy User-...

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CA$1,018.00 - CA$1,018.00
CA$1,018.00
CA$1,018.00 - CA$1,018.00
CA$1,018.00
Shelyak Grating module for the Lhires III - 1800 l/mm
CA$1,018.00 - CA$1,018.00
CA$1,018.00
CA$1,018.00 - CA$1,018.00
CA$1,018.00

Shelyak Grating module for the Lhires III - 1800 l/mm

SHK-SE0121

Grating Ruling: 1800 lines/mm Compatibility: Shelyak Lhires III Spectroscope Function: Alternative module to change native resolution Use Case...

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CA$1,018.00 - CA$1,018.00
CA$1,018.00
CA$1,018.00 - CA$1,018.00
CA$1,018.00
Shelyak Grating module for the Lhires III - 2400 l/mm
CA$1,035.00 - CA$1,035.00
CA$1,035.00
CA$1,035.00 - CA$1,035.00
CA$1,035.00

Shelyak Grating module for the Lhires III - 2400 l/mm

SHK-SE0005

Grating Ruling: 2400 lines/mm Instrument Compatibility: Shelyak Lhires III Spectroscope Primary Application: High-Resolution Spectroscopy Function...

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CA$1,035.00 - CA$1,035.00
CA$1,035.00
CA$1,035.00 - CA$1,035.00
CA$1,035.00
Shelyak Grating module for the Lhires III - 300 l/mm
CA$1,018.00 - CA$1,018.00
CA$1,018.00
CA$1,018.00 - CA$1,018.00
CA$1,018.00

Shelyak Grating module for the Lhires III - 300 l/mm

SHK-SE0008

Grating for Lhires III Spectroscope 300 lines/mm Ruling Provides Lower Resolution and Wider Spectral Range Complements the Standard 2400 l/mm Grat...

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CA$1,018.00 - CA$1,018.00
CA$1,018.00
CA$1,018.00 - CA$1,018.00
CA$1,018.00
Shelyak Grating module for the Lhires III - 600 l/mm
CA$1,018.00 - CA$1,018.00
CA$1,018.00
CA$1,018.00 - CA$1,018.00
CA$1,018.00

Shelyak Grating module for the Lhires III - 600 l/mm

SHK-SE0007

Grating Density: 600 lines/mm Instrument Compatibility: Shelyak Lhires III Spectroscope Primary Application: Low-resolution, wide-band spectros...

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CA$1,018.00 - CA$1,018.00
CA$1,018.00
CA$1,018.00 - CA$1,018.00
CA$1,018.00
Shelyak Grating module for the UVEX - 1200 l/mm
CA$992.00 - CA$992.00
CA$992.00
CA$992.00 - CA$992.00
CA$992.00

Shelyak Grating module for the UVEX - 1200 l/mm

SHK-SE0245

1200 lines/mm Grating Density Designed for the Shelyak UVEX Spectroscope Enables High-Resolution Spectroscopy User-Interchangeable Module Doubles ...

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CA$992.00 - CA$992.00
CA$992.00
CA$992.00 - CA$992.00
CA$992.00
Shelyak Grating module for the UVEX - 150 l/mm
CA$992.00 - CA$992.00
CA$992.00
CA$992.00 - CA$992.00
CA$992.00

Shelyak Grating module for the UVEX - 150 l/mm

SHK-SE0242

150 lines/mm Grating Density Designed for the Shelyak UVEX Spectroscope Optimized for Low-Resolution, Wide-Coverage Spectroscopy Interchangeable M...

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CA$992.00 - CA$992.00
CA$992.00
CA$992.00 - CA$992.00
CA$992.00
Shelyak Grating module for the UVEX - 1800 l/mm
CA$992.00 - CA$992.00
CA$992.00
CA$992.00 - CA$992.00
CA$992.00

Shelyak Grating module for the UVEX - 1800 l/mm

SHK-SE0246

Grating Density: 1800 lines/mm Instrument Compatibility: Shelyak UVEX Spectroscope Primary Application: High-resolution spectroscopy Modular Desig...

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CA$992.00 - CA$992.00
CA$992.00
CA$992.00 - CA$992.00
CA$992.00
Shelyak Grating module for the UVEX - 300 l/mm
CA$992.00 - CA$992.00
CA$992.00
CA$992.00 - CA$992.00
CA$992.00

Shelyak Grating module for the UVEX - 300 l/mm

SHK-SE0243

300 lines/mm Grating Density Optional Interchangeable Module Designed for the Shelyak UVEX Spectroscope Lower Resolution, Wider Spectral Coverage ...

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CA$992.00 - CA$992.00
CA$992.00
CA$992.00 - CA$992.00
CA$992.00

Amateur Spectroscopy Instruments

Spectrographs trade resolution against the faintness of the targets they can reach. Choosing well means knowing which side of that trade your programme sits on.

  • Low-resolution spectrographs: Capture a broad spectrum from relatively faint targets, suitable for classifying stars, observing novae and studying emission-line objects.
  • High-resolution spectrographs: Resolve fine line detail and small wavelength shifts for radial velocity and line profile work, requiring brighter targets and longer exposures.
  • Echelle designs: Capture a wide wavelength range at high resolution simultaneously by stacking spectral orders, at higher cost and complexity.
  • Calibration modules: Reference lamps that provide known wavelength lines, without which a spectrum cannot be accurately calibrated.
  • Guiding provision: Keeping a star on a narrow slit for minutes requires integrated guiding, and this is a core part of the instrument rather than an add-on.
  • Transmission gratings: Simple grating filters that thread into an eyepiece barrel, the least expensive way to record a first spectrum.

Why Choose David Astro for Shelyak

Spectroscopy has a steeper learning curve than imaging, and the equipment choice should reflect where you are starting.

  • Programme-based recommendation: We ask what you want to measure, because a radial velocity programme and a nova monitoring programme need very different resolutions.
  • Realistic aperture guidance: Spectroscopy spreads a star's light across a detector, so target brightness and aperture matter more than in imaging. We set expectations honestly.
  • Starting point suggested: For a first spectrum we will often suggest a transmission grating before a slit spectrograph, since it teaches the workflow at a fraction of the cost.
  • Authorized dealer: Full manufacturer warranty with support handled in Canada.
  • Ships from Canada: No duties or brokerage fees for Canadian buyers.

Shelyak in Canada — Frequently Asked Questions

What aperture do I need for spectroscopy?
More than for imaging the same object, because the light is spread across a spectrum. Low-resolution work on bright stars is achievable with modest apertures; high resolution needs both aperture and bright targets.
Can amateurs contribute real data?
Yes, substantially. Amateur spectra of novae, symbiotic stars and Be stars feed into professional monitoring programmes, because professionals cannot cover every object every night.
Where should I start?
A transmission grating that threads into an eyepiece barrel records a recognizable spectrum for very little money and teaches the calibration workflow, which is the hard part.
Do I need a calibration lamp?
For quantitative work, yes. Without reference lines of known wavelength you cannot calibrate the spectrum accurately, which limits it to qualitative comparison.

Interested in spectroscopy?

Tell us your telescope and what you want to measure and we will suggest a starting instrument. In stock and shipping from Canada.