iOptron 1.25" Dielectric Star Diagonal - 6231

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Item #IOPN-6231

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  • $79.00

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  • This 90º 1.25" Star Diagonal from iOptron provides a more comfortable viewing position for your head when your refractor or catadioptric optical tube is pointed directly at or close to the zenith
  • BK-7 optical glass mirror with dielectric coatings offers 99%+ light transmission to deliver incredibly high contrast images without giving up any resolution
  • This durable 1.25" diagonal is lightweight and features a black anodized aluminum exterior
  • Its popular 1.25" barrel and eyepiece holder size makes it compatible with several focusers, drawtubes, and other accessories
  • Brass compression ring protects eyepieces from damage when secured in place
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  • Description

    iOptron 1.25" Dielectric Star Diagonal


    The iOptron 1.25" 90º Dielectric Star Diagonal will greatly improve your observing experience by placing your head in a comfortable position when your refractor or catadioptric telescope is pointed at or close to the zenith. This diagonal generates above 99% incoming light transmission for brilliant high contrast images while the maximum resolution is preserved due to its dielectric hard-coated mirror with BK-7 optical glass.

    Made with durability in mind, this Dielectric Star Diagonal boasts black anodized aluminum housing and is remarkably lightweight. The 1.25" barrel and eyepiece holder makes it suitable for use with the most commonly encountered size of focusers, drawtubes, and accessories. The eyepiece holder also features a brass compression ring to prevent eyepiece marring when locked in place. A built-in safety-stop provides protection for the mirror, ensuring lasting life.


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  • Dimensions & Specifications

    • Diagonal Type: Star Diagonal
    • Telescope Side: 1.25" Barrel
    • Eyepiece Side: 1.25" Barrel

  • Product Guarantee

    We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.

    Manufacturer Warranty

    One year limited

    Return & Exchange Policy

    At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.

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