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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Shelyak Optical kit for Star'Ex LR spectroscope - IR complement

Shelyak Optical kit for Star'Ex LR spectroscope - IR complement

par Shelyak
UGC SHK-ES0033
$517.00 - $517.00
$517.00
$517.00 - $517.00
$517.00
Égalisation de prix!
  • Extends Star'Ex LR spectroscope range to 650 nm – 1000 nm
  • Achieves a spectral resolution of R=650 with a 23-micron slit
  • Designed for DIY 3D-printed spectroscope projects
  • Features 80mm focal length collimator and objective lenses
  • Maintains a 1:1 internal reduction ratio for simple imaging
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  • Description
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  • Optical kit for Star'Ex LR spectroscope - IR complement

    This optical kit provides the essential components to modify a Star'Ex Low Resolution (LR) spectroscope for near-infrared observation, extending its range from the visible spectrum out to 1000 nm. With a typical resolution of R=650 using a 23-micron slit, this kit enables the study of faint object spectra with a DIY, 3D-printable instrument. The design is built around an 80mm focal length collimator and objective, ensuring a direct 1:1 imaging ratio onto your sensor.

    Extend Your Star'Ex LR into the Infrared up to 1000nm

    This kit is specifically designed as the infrared (IR) complement for the Star'Ex LR project. While the base Star'Ex operates in the visible range from 400 nm to 700 nm, these optics push your instrument's capabilities into the near-IR, covering a wavelength range of 650 nm to 1000 nm. This allows you to analyze spectral features not visible to the human eye, such as those in carbon stars and other cool stellar classes.

    Achieve R=650 Resolution with an 80mm Optical Design

    The system is engineered to deliver a spectral resolution of R=650 at 650 nm when paired with a 23-micron slit. This level of detail is ideal for classifying stellar types and identifying major emission and absorption lines in faint targets like nebulae and galaxies. The optical train uses an 80mm focal length for both the collimator and objective lenses, a design choice that simplifies the system and provides a clean, direct image.

    DIY Spectroscope: A 3D-Printed Project with 1:1 Optics

    This is an optical component kit for a do-it-yourself project, not a complete spectroscope. You will need to provide the 3D-printed housing and mechanical components, with files readily available from projects by Christian Buil. The kit's 1:1 internal reduction ratio means there is no change in image scale through the optics, simplifying focus and image acquisition. Please note that this kit contains only the optical elements; the 3D-printed parts, adapters, and cameras must be sourced separately.

  • What is the Star'Ex LR IR Complement Optical Kit for?

    This is an add-on optical kit that modifies a DIY Star'Ex Low Resolution spectroscope, extending its operational wavelength from the standard visible range (400-700 nm) into the near-infrared (650-1000 nm). It allows amateur astronomers to study the spectra of celestial objects in a different light band.

    What else do I need to build a complete Star'Ex LR IR spectroscope?

    This kit contains only the optical components. To build a functional spectroscope, you must provide:

    • The 3D-printed body and mechanical parts (files are available online from the Star'Ex project).
    • An imaging camera and a guiding camera.
    • Adapters to connect the spectroscope to your telescope and cameras.

    What does a resolution of R=650 allow me to observe with the Star'Ex LR?

    A resolution of R=650 is considered low-resolution spectroscopy, but it is powerful enough for many amateur projects. It allows you to clearly identify the main spectral types of stars (O, B, A, F, G, K, M), observe the prominent emission lines in nebulae like the Balmer series, and measure the redshift of bright galaxies and quasars.

    Can I use this Star'Ex LR IR kit to observe the Hydrogen-alpha line in a nebula like the Orion Nebula (M42)?

    Yes. The Hydrogen-alpha emission line is at 656.3 nm, which falls squarely within this kit's 650 nm to 1000 nm operational range. This makes it well-suited for studying H-alpha emissions in star-forming regions like the Orion Nebula (M42) and other emission nebulae.

    How does the 650 nm to 1000 nm range help when observing a carbon star in my 8" SCT?

    Carbon stars are very cool and emit a significant portion of their light in the near-infrared. Using this kit with your 8" SCT, you can capture the deep absorption bands of molecules like cyanogen (CN) and carbon (C2) that are characteristic of these stars and are most prominent in the 650 nm to 1000 nm range.

    Is this Star'Ex IR kit a standalone spectroscope?

    No, it is not. This is an optical kit containing lenses, gratings, and other elements. It is intended for those undertaking the DIY project of building a Star'Ex spectroscope using 3D printing or other custom fabrication methods. You must build the instrument's body and supply all other non-optical components.

  • Spectral Resolution R = 650 typical (@650 nm with a 23-micron slit)
    Infrared Wavelength Range 650 nm – 1000 nm
    Visible Wavelength Range (Base Unit) 400 nm – 700 nm
    Collimator Focal Length 80 mm
    Objective Focal Length 80 mm
    Internal Reduction Ratio 1:1
  • Shelyak 1-Year Warranty