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

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

par Shelyak
UGC SHK-SE0005
$750.00 - $750.00
$750.00
$750.00 - $750.00
$750.00
Égalisation de prix!
  • Grating Ruling: 2400 lines/mm
  • Instrument Compatibility: Shelyak Lhires III Spectroscope
  • Primary Application: High-Resolution Spectroscopy
  • Function: Direct replacement for the standard Lhires III grating
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  • Description
  • FAQ
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  • Warranty

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

    This is the standard, high-resolution grating module for the Shelyak Lhires III spectroscope, featuring a 2400 lines/mm ruling. The Lhires III instrument is supplied from the factory with this 2400 l/mm grating to deliver its maximum native resolving power.

    The Standard 2400 l/mm High-Resolution Grating for Lhires III

    Engineered as the default optical component for the Lhires III, this 2400 lines/mm grating module is the key to achieving the instrument's highest spectral resolution. It is designed for detailed analysis of stellar atmospheres, Be star emission lines, and other targets requiring fine spectral detail.

    This module serves as a direct replacement for the original grating included with your Lhires III. While other complementary gratings are available to change the instrument's resolution for different applications, the 2400 l/mm version remains the primary choice for high-resolution work.

  • What is the primary purpose of the 2400 l/mm grating for the Lhires III?

    The 2400 lines/mm grating is designed to provide the highest possible spectral resolution for the Lhires III spectroscope. It is intended for scientific applications where resolving fine details in a star's spectrum is critical, such as measuring doppler shifts or analyzing narrow emission and absorption lines.

    Is this 2400 l/mm grating an upgrade for the Lhires III?

    No, this is not an upgrade. The Shelyak Lhires III spectroscope is sold with the 2400 l/mm grating module as its standard component. This product is a direct, factory-spec replacement for a lost or damaged original grating.

    Why would I need to replace the 2400 l/mm grating on my Lhires III?

    You would typically purchase this module only if the original grating that came with your Lhires III was damaged, degraded, or lost. Since it is the standard grating, this module ensures your instrument is restored to its original high-resolution capabilities.

    How does the 2400 l/mm grating perform on a Be star like Gamma Cassiopeiae?

    The high resolution of the 2400 l/mm grating is ideal for studying Be stars like Gamma Cassiopeiae (γ Cas). It allows you to clearly resolve the double-peaked profile of the Hydrogen-alpha (Hα) emission line, which originates from the star's circumstellar disk. This level of detail is essential for monitoring V/R (violet-to-red peak) variations and changes in the disk structure.

    When should I use a lower-resolution grating instead of this 2400 l/mm module for my Lhires III?

    While the 2400 l/mm grating provides maximum detail, it covers a very small spectral range. You should switch to a lower-resolution grating (e.g., 600 or 1200 l/mm) when you need to:

    • Capture a wider wavelength range in a single exposure, such as when classifying star types.
    • Study faint objects like quasars or supernovae, where collecting more light over a broader band is more important than high resolution.
    • Perform initial surveys of targets before focusing on a specific spectral line with the high-resolution grating.

    Is it difficult to install the 2400 l/mm grating module in the Lhires III?

    No, the grating modules for the Lhires III are designed to be user-interchangeable. The process involves opening the instrument cover and carefully swapping the modules. Refer to the official Lhires III user manual for detailed, step-by-step instructions to ensure proper handling and alignment.

  • Shelyak 1-Year Warranty