Skip to content

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.

Filters

Shelyak Photometric Slit 23/200µm for Alpy 600 & UVEX
CA$305.00 - CA$305.00
CA$305.00
CA$305.00 - CA$305.00
CA$305.00

Shelyak Photometric Slit 23/200µm for Alpy 600 & UVEX

SHK-SE0145

Dual slit design with 23µm and 200µm widths Enables high-resolution spectroscopy and spectrophotometry Designed for Shelyak Alpy 600 and UVEX spec...

View full details
CA$305.00 - CA$305.00
CA$305.00
CA$305.00 - CA$305.00
CA$305.00
Shelyak Power supply 12V/3A
CA$40.00 - CA$40.00
CA$40.00
CA$40.00 - CA$40.00
CA$40.00

Shelyak Power supply 12V/3A

SHK-EL0073

Delivers a regulated 12V DC output Provides up to 3A of current Features a 2.5mm x 5.5mm barrel connector Standard center-positive polarity Includ...

View full details
CA$40.00 - CA$40.00
CA$40.00
CA$40.00 - CA$40.00
CA$40.00
Shelyak Practical Guide to Starting in Astronomical Spectroscopy (French edition)
CA$64.00 - CA$64.00
CA$64.00
CA$64.00 - CA$64.00
CA$64.00

Shelyak Practical Guide to Starting in Astronomical Spectroscopy (French edition)

SHK-DC0027

Language: French Author: François Cochard (Co-founder of Shelyak Instruments) Focus: Practical guide for slit-based spectroscopy Prerequisites: No...

View full details
CA$64.00 - CA$64.00
CA$64.00
CA$64.00 - CA$64.00
CA$64.00
Shelyak Prism 3.8° for the Star Analyser
CA$113.00 - CA$113.00
CA$113.00
CA$113.00 - CA$113.00
CA$113.00

Shelyak Prism 3.8° for the Star Analyser

SHK-OP0094

3.8° prism angle precisely calculated for the Star Analyser Improves spectral resolution by approximately 20% Achieves a resolving power of R~130 ...

View full details
CA$113.00 - CA$113.00
CA$113.00
CA$113.00 - CA$113.00
CA$113.00
CA$78.00 - CA$78.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00

Shelyak SE0174

SHK-SE0174

CA$78.00 - CA$78.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00

Shelyak SE0259

SHK-SE0259

CA$78.00 - CA$78.00
CA$78.00
CA$78.00 - CA$78.00
CA$78.00
Shelyak Sol’Ex / SUNSCAN 2-position slit 7 – 10 µm (GEN2)
CA$106.00 - CA$106.00
CA$106.00
CA$106.00 - CA$106.00
CA$106.00

Shelyak Sol’Ex / SUNSCAN 2-position slit 7 – 10 µm (GEN2)

SHK-SE0289

Dual Slit Widths: 7µm and 10µm Substrate Dimensions: 12 x 8 x 2 mm Material: Heat-Resistant Eagle XG Glass Wavelength Range: 350 nm to 1000 nm Coa...

View full details
CA$106.00 - CA$106.00
CA$106.00
CA$106.00 - CA$106.00
CA$106.00
CA$47.00 - CA$47.00
CA$47.00
CA$47.00 - CA$47.00
CA$47.00

Shelyak Spacer for Star Analyser

SHK-BA0014
1 in stock

Increases Grating-to-Sensor Distance Adjusts Spectrum Dispersion for Optimal Scale Stackable Design for Custom Spacing Matches Spectrum Length to ...

View full details
CA$47.00 - CA$47.00
CA$47.00
CA$47.00 - CA$47.00
CA$47.00
Shelyak Spare Lamp for Flats
CA$17.00 - CA$17.00
CA$17.00
CA$17.00 - CA$17.00
CA$17.00

Shelyak Spare Lamp for Flats

SHK-EL0116

Replacement Tungsten Lamp Spare Part for Flat-Field Calibrators Ensures Consistent, Repeatable Illumination Description FAQ ...

View full details
CA$17.00 - CA$17.00
CA$17.00
CA$17.00 - CA$17.00
CA$17.00
Shelyak Spox Module
CA$458.00 - CA$458.00
CA$458.00
CA$458.00 - CA$458.00
CA$458.00

Shelyak Spox Module

SHK-PF0045

Remote control for spectrograph calibration lamps Compatible with Alpy 600, LISA, and LHIRES III Dual control modes: manual push-buttons and compu...

View full details
CA$458.00 - CA$458.00
CA$458.00
CA$458.00 - CA$458.00
CA$458.00
Shelyak Spox Module for Alpy/LISA with 0.8m cable
CA$644.00 - CA$644.00
CA$644.00
CA$644.00 - CA$644.00
CA$644.00

Shelyak Spox Module for Alpy/LISA with 0.8m cable

SHK-ES0015

Automates calibration lamp control for Alpy 600, LISA, and LHIRES III spectrographs Includes 0.8m cable for connecting the module to the spectrogr...

View full details
CA$644.00 - CA$644.00
CA$644.00
CA$644.00 - CA$644.00
CA$644.00
Shelyak Spox Module for Alpy/LISA with 5m cable
CA$644.00 - CA$644.00
CA$644.00
CA$644.00 - CA$644.00
CA$644.00

Shelyak Spox Module for Alpy/LISA with 5m cable

SHK-ES0014

Automates calibration lamp control Compatible with Alpy 600, LISA, and LHIRES III Includes 5m spectrograph connection cable Manual push-button and...

View full details
CA$644.00 - CA$644.00
CA$644.00
CA$644.00 - CA$644.00
CA$644.00
Shelyak Spox Module for Lhires III with 0.8m cable
CA$562.00 - CA$562.00
CA$562.00
CA$562.00 - CA$562.00
CA$562.00

Shelyak Spox Module for Lhires III with 0.8m cable

SHK-ES0013

Remote calibration control for Shelyak Lhires III spectrographs Manages both Tungsten (flat) and Neon/Argon (calibration) lamps Included 0.8m cabl...

View full details
CA$562.00 - CA$562.00
CA$562.00
CA$562.00 - CA$562.00
CA$562.00
Shelyak Spox Module for Lhires III with 5m cable
CA$562.00 - CA$562.00
CA$562.00
CA$562.00 - CA$562.00
CA$562.00

Shelyak Spox Module for Lhires III with 5m cable

SHK-ES0012

Remote control for Lhires III calibration lamps Manual push-button and automated PC control Connects to PC via USB for software/ASCOM integration ...

View full details
CA$562.00 - CA$562.00
CA$562.00
CA$562.00 - CA$562.00
CA$562.00
Shelyak ST8/10 adapter for Alpy 600
CA$139.00 - CA$139.00
CA$139.00
CA$139.00 - CA$139.00
CA$139.00

Shelyak ST8/10 adapter for Alpy 600

SHK-PU0149

Custom adapter for SBIG ST7, ST8, ST10, and ST2000 cameras Mounts compatible SBIG cameras to a Shelyak Alpy 600 spectroscope Replaces the camera's...

View full details
CA$139.00 - CA$139.00
CA$139.00
CA$139.00 - CA$139.00
CA$139.00
CA$258.00 - CA$258.00
CA$258.00
CA$258.00 - CA$258.00
CA$258.00

Shelyak Star Analyser 100

SHK-PF0003

Turns any astronomy camera or DSLR into a spectroscope Installs as easily as a standard 1.25" filter High-efficiency transmission grating blazed f...

View full details
CA$258.00 - CA$258.00
CA$258.00
CA$258.00 - CA$258.00
CA$258.00
CA$296.00 - CA$296.00
CA$296.00
CA$296.00 - CA$296.00
CA$296.00

Shelyak Star Analyser 200

SHK-PF0040

Instantly converts your imaging camera into a spectroscope Optimized for use in filter wheels close to the sensor Produces a low-resolution spectr...

View full details
CA$296.00 - CA$296.00
CA$296.00
CA$296.00 - CA$296.00
CA$296.00
Shelyak Star Analyser 200 Mounting Kit
CA$63.00 - CA$63.00
CA$63.00
CA$63.00 - CA$63.00
CA$63.00

Shelyak Star Analyser 200 Mounting Kit

SHK-EL0166

Securely houses the Star Analyser 200 grating (sold separately) Enables easy integration into a standard 1.25" or 2" optical train Essential for u...

View full details
CA$63.00 - CA$63.00
CA$63.00
CA$63.00 - CA$63.00
CA$63.00
Shelyak Star’Ex 14-20-26-32 µm slit + 25 µm hole (GEN2)
CA$127.00 - CA$127.00
CA$127.00
CA$127.00 - CA$127.00
CA$127.00

Shelyak Star’Ex 14-20-26-32 µm slit + 25 µm hole (GEN2)

SHK-SE0288

Four selectable slit widths: 14 µm, 20 µm, 26 µm, and 32 µm Central 25 µm pinhole for alignment 4mm slit length for extended objects 16mm x 16mm f...

View full details
CA$127.00 - CA$127.00
CA$127.00
CA$127.00 - CA$127.00
CA$127.00
Shelyak T-mount adapter ring for SCT
CA$125.00 - CA$125.00
CA$125.00
CA$125.00 - CA$125.00
CA$125.00

Shelyak T-mount adapter ring for SCT

SHK-BA0027

Connects Shelyak spectrographs to Schmidt-Cassegrain telescopes Male M42x0.75 T-mount thread for instrument connection Female 2-inch thread for SC...

View full details
CA$125.00 - CA$125.00
CA$125.00
CA$125.00 - CA$125.00
CA$125.00
Shelyak T-mount front part for the Lhires III
CA$172.00 - CA$172.00
CA$172.00
CA$172.00 - CA$172.00
CA$172.00

Shelyak T-mount front part for the Lhires III

SHK-PU0019

Replaces the standard Lhires III front panel Provides a female M42x0.75mm T-mount thread Enables direct connection to custom optical trains Instal...

View full details
CA$172.00 - CA$172.00
CA$172.00
CA$172.00 - CA$172.00
CA$172.00
Shelyak T-Mount to Canon EOS DSLR Adapter Ring
CA$61.00 - CA$61.00
CA$61.00
CA$61.00 - CA$61.00
CA$61.00

Shelyak T-Mount to Canon EOS DSLR Adapter Ring

SHK-BA0043

Connects Canon EOS DSLR camera bodies to T-Mount accessories Standard female T-threads (M42x0.75) Durable, all-metal construction for a secure, li...

View full details
CA$61.00 - CA$61.00
CA$61.00
CA$61.00 - CA$61.00
CA$61.00
Shelyak T-mount – 31.75mm nosepiece adapter ring
CA$73.00 - CA$73.00
CA$73.00
CA$73.00 - CA$73.00
CA$73.00

Shelyak T-mount – 31.75mm nosepiece adapter ring

SHK-PU0124

Connects M42x0.75mm T-mount accessories to 1.25" focusers Enables secure threaded attachment for cameras and spectroscopes Standard 31.75mm (1.25"...

View full details
CA$73.00 - CA$73.00
CA$73.00
CA$73.00 - CA$73.00
CA$73.00
Shelyak Thorium-Argon Lamp for Shelyak Spectrographs
CA$1,463.00 - CA$1,463.00
CA$1,463.00
CA$1,463.00 - CA$1,463.00
CA$1,463.00

Shelyak Thorium-Argon Lamp for Shelyak Spectrographs

SHK-EL0037

Element Composition: Thorium-Argon (ThAr) Lamp Type: Hollow Cathode Lamp (HCL) Primary Application: High-resolution spectrograph calibration Desig...

View full details
CA$1,463.00 - CA$1,463.00
CA$1,463.00
CA$1,463.00 - CA$1,463.00
CA$1,463.00

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.