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David Astro Cheshire - Short Style

David Astro Cheshire - Short Style

by David Astro
SKU DAV-CHES-1.25-S
CA$35.00 - CA$35.00
CA$35.00
CA$35.00 - CA$35.00
CA$35.00
Price Match Policy!
  • 1.25" barrel
  • Compact short style
  • Passive tool, no batteries
  • For Newtonian reflectors
8 in stock
Qualifies for FREE Shipping in Canada on orders over $500.
  • Description
  • FAQ
  • Specifications
  • In the Box

  • David Astro Cheshire - Short Style

    The David Astro Cheshire - Short Style is a compact collimation eyepiece for Newtonian reflectors with a 1.25" barrel. A peep hole and an angled reflective face lit by ambient light let you align the primary mirror by eye.

    Passive Newtonian Collimation

    A Cheshire needs no power and has no laser to align. Light falling on its angled face is reflected down the tube, so you can see the primary mirror's centre mark and centre it by adjusting the primary mirror screws.

  • What is the David Astro Cheshire - Short Style used for?

    Collimating a Newtonian reflector, mainly aligning the primary mirror.

    Does it need batteries?

    No. A Cheshire is a passive tool lit by ambient light.

    Will it fit my focuser?

    It has a 1.25" barrel, so it fits 1.25" focusers, and 2" focusers with a 2" to 1.25" adapter.

    How do I use it?

    Insert the Cheshire in the focuser and look through the peep hole. Centre the secondary mirror under the focuser, then adjust the primary mirror screws until the reflection of the primary's centre mark sits centred on the Cheshire's reflective face.

    Short or long style?

    Both align the primary mirror. The short style is more compact; the David Astro Cheshire - Long Style adds a longer sight tube that helps with secondary mirror placement.

  • Brand David Astro
    SKU DAV-CHES-1.25-S
    Barrel size 1.25"
    Style Short

    • David Astro Cheshire - Short Style

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