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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.

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Original price $719.00 USD - Original price $719.00 USD
Original price
$719.00 USD
$719.00 USD - $719.00 USD
Current price $719.00 USD

Shelyak Grating module for the UVEX - 1800 l/mm

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

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Original price $719.00 USD - Original price $719.00 USD
Original price
$719.00 USD
$719.00 USD - $719.00 USD
Current price $719.00 USD
Original price $719.00 USD - Original price $719.00 USD
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$719.00 USD
$719.00 USD - $719.00 USD
Current price $719.00 USD

Shelyak Grating module for the UVEX - 300 l/mm

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

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Original price $719.00 USD - Original price $719.00 USD
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$719.00 USD
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Current price $719.00 USD
Original price $135.00 USD - Original price $135.00 USD
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$135.00 USD
$135.00 USD - $135.00 USD
Current price $135.00 USD

Shelyak Handheld Spectro

Convenient Dimensions: 115 x 25mm Visual Use Only for Bright Light Sources Ideal for Educational and Classroom Use Reveals Emission and Absorption...

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Original price $135.00 USD - Original price $135.00 USD
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$135.00 USD
$135.00 USD - $135.00 USD
Current price $135.00 USD
Original price $362.00 USD - Original price $362.00 USD
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$362.00 USD
$362.00 USD - $362.00 USD
Current price $362.00 USD

Shelyak High Performance 23µm Slit

23µm Slit Width Over 90% Reflectivity Protected Aluminum Coating 350-800nm Anti-Reflection Coating Compatible with ALPY 600 & UVEX Spectroscop...

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Original price $362.00 USD - Original price $362.00 USD
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$362.00 USD
$362.00 USD - $362.00 USD
Current price $362.00 USD
Original price $19.00 USD - Original price $19.00 USD
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$19.00 USD
$19.00 USD - $19.00 USD
Current price $19.00 USD

Shelyak High Voltage Power Connector for Shelyak PF0082

Enables Custom Cable Fabrication Designed for High-Voltage Applications Designed for the Shelyak PF0082 Power Supply Essential for Spectroscopic C...

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Original price $19.00 USD - Original price $19.00 USD
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$19.00 USD
$19.00 USD - $19.00 USD
Current price $19.00 USD
Original price $731.00 USD - Original price $731.00 USD
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$731.00 USD
$731.00 USD - $731.00 USD
Current price $731.00 USD

Shelyak Instruments 200µm Calibration Optical Fiber - 20m

20 meter length for flexible observatory layouts 200µm core diameter optimized for calibration sources Secure FC-FC connectors for standard astron...

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Original price $731.00 USD - Original price $731.00 USD
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$731.00 USD
$731.00 USD - $731.00 USD
Current price $731.00 USD
Original price $470.00 USD - Original price $470.00 USD
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$470.00 USD
$470.00 USD - $470.00 USD
Current price $470.00 USD

Shelyak Instruments High Voltage Power Supply

Maximum Output Voltage: 310V DC Adjustable Current Range: 1 mA to 35 mA Required Input Power: 12V DC, 2A (not included) Internal 2A Fuse for Polar...

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Original price $470.00 USD - Original price $470.00 USD
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$470.00 USD
$470.00 USD - $470.00 USD
Current price $470.00 USD
Original price $95.00 USD - Original price $95.00 USD
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$95.00 USD
$95.00 USD - $95.00 USD
Current price $95.00 USD

Shelyak Lhires III 2-inch adapter

Adapts Lhires III Spectroscope to 2-inch focusers Provides a secure, non-flexing connection Enables use with a wider range of telescopes Machined ...

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Original price $95.00 USD - Original price $95.00 USD
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$95.00 USD
$95.00 USD - $95.00 USD
Current price $95.00 USD
Original price $124.00 USD - Original price $124.00 USD
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$124.00 USD
$124.00 USD - $124.00 USD
Current price $124.00 USD

Shelyak Lhires III adapter set (23 mm camera)

Connects cameras to the Shelyak Lhires III spectroscope Designed for cameras with a backfocus between 21.35 mm and 25.35 mm Optimized for common c...

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Original price $124.00 USD - Original price $124.00 USD
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$124.00 USD
$124.00 USD - $124.00 USD
Current price $124.00 USD
Original price $72.00 USD - Original price $72.00 USD
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$72.00 USD
$72.00 USD - $72.00 USD
Current price $72.00 USD

Shelyak Lhires III Photo Tripod Adapter

Mounts Lhires III Spectroscope to a Standard Photo Tripod Uses Standard Kodak Tripod Thread Ideal for Public Outreach and Solar Observation Simple...

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Original price $72.00 USD - Original price $72.00 USD
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$72.00 USD
$72.00 USD - $72.00 USD
Current price $72.00 USD
Original price $143.00 USD - Original price $143.00 USD
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$143.00 USD
$143.00 USD - $143.00 USD
Current price $143.00 USD

Shelyak Lhires III Slit Holder

Enables rapid slit changes for the Lhires III spectroscope Improves observational efficiency in the field Compatible with standard, wide, and phot...

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Original price $143.00 USD - Original price $143.00 USD
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$143.00 USD
$143.00 USD - $143.00 USD
Current price $143.00 USD
Original price $5,359.00 USD - Original price $5,359.00 USD
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$5,359.00 USD
$5,359.00 USD - $5,359.00 USD
Current price $5,359.00 USD

Shelyak Lhires III Spectroscope

Resolving power of R=18,000 with the included 2400 lines/mm grating Selectable wavelength range from 400 nm to 750 nm Optimized for F/10 telescope...

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Original price $5,359.00 USD - Original price $5,359.00 USD
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$5,359.00 USD
$5,359.00 USD - $5,359.00 USD
Current price $5,359.00 USD
Original price $221.00 USD - Original price $221.00 USD
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$221.00 USD
$221.00 USD - $221.00 USD
Current price $221.00 USD

Shelyak LISA & Lhires III Photometric Slit

Enables true spectrophotometry with LISA & Lhires III spectrographs Dual-width design for simultaneous high-resolution spectra and total flux ...

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Original price $221.00 USD - Original price $221.00 USD
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$221.00 USD
$221.00 USD - $221.00 USD
Current price $221.00 USD
Original price $492.00 USD - Original price $492.00 USD
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$492.00 USD
$492.00 USD - $492.00 USD
Current price $492.00 USD

Shelyak LISA Calibration Module

Integrates with the Shelyak LISA Spectroscope Internal Halogen Lamp for Flat-Field Correction Internal Argon-Neon (Ar-Ne) Lamp for Wavelength Cali...

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Original price $492.00 USD - Original price $492.00 USD
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$492.00 USD
$492.00 USD - $492.00 USD
Current price $492.00 USD
Original price $870.00 USD - Original price $870.00 USD
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$870.00 USD
$870.00 USD - $870.00 USD
Current price $870.00 USD

Shelyak LISA Near-Infrared Conversion Kit

Extends Spectral Range to 650-1000nm Optimized for Near-Infrared (NIR) Spectroscopy Replaces Camera Ring to Correct NIR Chromatism Adds an Order F...

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Original price $870.00 USD - Original price $870.00 USD
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$870.00 USD
$870.00 USD - $870.00 USD
Current price $870.00 USD
Original price $143.00 USD - Original price $143.00 USD
Original price
$143.00 USD
$143.00 USD - $143.00 USD
Current price $143.00 USD

Shelyak LISA Slit Holder

Enables rapid interchange of spectroscopic slits Designed specifically for the Shelyak LISA Spectroscope Compatible with standard, wide, and photo...

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Original price $143.00 USD - Original price $143.00 USD
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$143.00 USD
$143.00 USD - $143.00 USD
Current price $143.00 USD
Original price $4,987.00 USD - Original price $4,987.00 USD
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$4,987.00 USD
$4,987.00 USD - $4,987.00 USD
Current price $4,987.00 USD

Shelyak LISA Spectroscope (VIS)

Designed for faint object spectroscopy at low resolution Resolving power of R~1,000 with the included 23 µm slit Optimized for f/5 optical systems...

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Original price $4,987.00 USD - Original price $4,987.00 USD
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$4,987.00 USD
$4,987.00 USD - $4,987.00 USD
Current price $4,987.00 USD
Original price $80.00 USD - Original price $80.00 USD
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$80.00 USD
$80.00 USD - $80.00 USD
Current price $80.00 USD

Shelyak Main cable for SPOX module - 0.8m

0.8m (2.6 ft) Cable Length Connects Shelyak SPOX Control Module Works with Alpy 600 and LISA (with the SE0183 adapter cord) and Lhires III Dual Ti...

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Original price $80.00 USD - Original price $80.00 USD
Original price
$80.00 USD
$80.00 USD - $80.00 USD
Current price $80.00 USD
Original price $95.00 USD - Original price $95.00 USD
Original price
$95.00 USD
$95.00 USD - $95.00 USD
Current price $95.00 USD

Shelyak Main cable for SPOX module - 5m

5-meter (16.4 ft) length for flexible observatory setup Connects Shelyak SPOX remote control module Works with Alpy 600 and LISA (with the SE0183 ...

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Original price $95.00 USD - Original price $95.00 USD
Original price
$95.00 USD
$95.00 USD - $95.00 USD
Current price $95.00 USD
Original price $227.00 USD - Original price $227.00 USD
Original price
$227.00 USD
$227.00 USD - $227.00 USD
Current price $227.00 USD

Shelyak Multiple Slit 15/19/23/35 µm

Four Selectable Slit Widths: 15µm, 19µm, 23µm, 35µm Reflective Slit Design for Maximum Throughput Compatible with Shelyak LISA & Lhires III Sp...

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Original price $227.00 USD - Original price $227.00 USD
Original price
$227.00 USD
$227.00 USD - $227.00 USD
Current price $227.00 USD
Original price $430.00 USD - Original price $430.00 USD
Original price
$430.00 USD
$430.00 USD - $430.00 USD
Current price $430.00 USD

Shelyak Optical kit for Sol’Ex spectroheliograph

Build a high-resolution solar spectroheliograph Achieves 0.03 nm resolution at 650 nm with 10 µm slit Tunable across the 400 nm to 700 nm visible ...

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Original price $430.00 USD - Original price $430.00 USD
Original price
$430.00 USD
$430.00 USD - $430.00 USD
Current price $430.00 USD
Original price $179.00 USD - Original price $179.00 USD
Original price
$179.00 USD
$179.00 USD - $179.00 USD
Current price $179.00 USD

Shelyak Optical kit for Star'Ex HR spectrograph - additional kit for Sol'Ex

Enables spectral resolution up to R=30,000 Covers the visible spectrum from 400 nm to 700 nm Designed for DIY 3D-printed spectrograph projects Int...

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Original price $179.00 USD - Original price $179.00 USD
Original price
$179.00 USD
$179.00 USD - $179.00 USD
Current price $179.00 USD
Original price $545.00 USD - Original price $545.00 USD
Original price
$545.00 USD
$545.00 USD - $545.00 USD
Current price $545.00 USD

Shelyak Optical kit for Star'Ex HR spectrograph - complete set

Achieve spectral resolutions from R=700 up to R=30,000 Covers the visible spectrum with a 400 nm to 700 nm wavelength range Features a high-disper...

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Original price $545.00 USD - Original price $545.00 USD
Original price
$545.00 USD
$545.00 USD - $545.00 USD
Current price $545.00 USD
Original price $609.00 USD - Original price $609.00 USD
Original price
$609.00 USD
$609.00 USD - $609.00 USD
Current price $609.00 USD

Shelyak Optical kit for Star'Ex LR spectroscope

Build a complete Star'Ex Low Resolution spectroscope Achieves a typical resolution of R=650 at 650 nm Designed for the visible spectrum from 400 n...

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Original price $609.00 USD - Original price $609.00 USD
Original price
$609.00 USD
$609.00 USD - $609.00 USD
Current price $609.00 USD

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.