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Orion Optics UK Dew Heater for Sec. 24″

Orion Optics UK Dew Heater for Sec. 24″

by Orion Optics UK
SKU OOUK-SECONDARY-DEW-HEATER-ODK24TR-CARBON
CA$2,344.00 - CA$2,344.00
CA$2,344.00
CA$2,344.00 - CA$2,344.00
CA$2,344.00
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  • Custom-fit for the Orion Optics UK 24" ODK secondary mirror
  • Prevents dew formation to maintain image contrast and brightness
  • Constructed from lightweight and durable carbon fibre
  • Essential for long-exposure astrophotography sessions
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  • Description
  • FAQ
  • Specifications
  • In the Box
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  • Warranty

  • Dew Heater for Sec. 24″

    This Orion Optics UK Dew Heater is specifically engineered for the secondary mirror of the 24" ODK telescope, providing an essential defense against image-degrading moisture. Constructed from rigid carbon fibre, it ensures your telescope's hand-figured optics perform at their peak throughout the night by gently warming the secondary mirror just above the dew point, preserving the high-contrast views required for elite astrophotography.

    Purpose-Built Dew Prevention for the ODK24 Secondary

    The open-tube design of the Orion Optics UK 24" ODK, while excellent for rapid thermal acclimation, leaves the secondary mirror exposed to the night air. As temperatures drop, this critical optical surface can cool below the dew point, causing micro-droplets of water to form, scattering light and severely reducing image contrast. This heater is designed to stop that process before it starts, applying minimal, controlled warmth directly to the secondary mirror housing to keep it clear all night.

    Lightweight Carbon Fibre Construction

    Engineered from carbon fibre, this secondary dew heater adds negligible weight to the telescope's front assembly. This is critical for maintaining the fine balance of the optical tube and ensures there is no undue stress on the secondary mirror spider vanes. The material's excellent thermal properties also contribute to even heat distribution, preventing hotspots and ensuring uniform protection across the mirror's surface.

  • Why is a dedicated secondary heater essential for the Orion Optics UK 24" ODK?

    The 24" ODK's large, exposed secondary mirror is highly susceptible to dew, especially during long imaging sessions on humid nights. Even a thin layer of dew can scatter light from bright stars and erase faint detail in galaxies and nebulae. This heater is a non-negotiable accessory for maintaining the telescope's high-contrast optical capabilities.

    What are the signs my ODK24 secondary mirror is dewing over?

    The first signs of secondary mirror dew are a gradual loss of contrast, a "halo" or glow appearing around bright stars, and the inability to resolve faint details you could see earlier in the session. In severe cases, the entire field of view will appear washed out and foggy. The Orion Optics UK Dew Heater prevents these issues from ever impacting your observations or images.

    How does the carbon fibre body of this Orion Optics UK heater help?

    Carbon fibre is both extremely lightweight and structurally rigid. This minimizes its impact on the telescope's balance and collimation by adding virtually no extra mass or stress to the secondary spider assembly. It is an ideal material for this critical location in the optical path.

    Will installing the Dew Heater for Sec. 24" affect my telescope's collimation?

    No. This heater is designed to integrate with the existing secondary mirror assembly without altering the optical alignment. Its lightweight carbon fibre construction ensures it does not cause any sag or shift in the secondary mirror's position.

    How is the Dew Heater for Sec. 24" powered and controlled?

    This dew heater is designed to be connected to a standard third-party dew controller. A controller allows you to adjust the power level, providing just enough heat to prevent dew without introducing tube currents, which is the recommended practice for optimal image stability.

    Can I leave the Orion Optics UK Dew Heater permanently installed on my ODK24?

    Yes, the heater is designed for permanent installation. It becomes an integrated part of your telescope, ready to be powered on whenever you observe, simplifying your setup and teardown process.

  • Orion Optics UK 1-Year Warranty