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Betty’s Secondary Mirror Holder

Betty’s Secondary Mirror Holder

All Taxes and Customs Charges Included

£120.00 GBP
£0.00 GBP £120.00 GBP
Early Bird Sale Sold out
Tax included.
Focal Ratio
Central Bolt Screw Size

Updated design

  • Far easier to adjust than traditional secondary holders
  • Perfect positioning of the secondary mirror
  • Perfect secondary mirror offset
  • Designed to carry secondary mirrors with a 50-80mm width.
  • Works with almost all Newtonians (just need an M6 or M5 central bolt in your spider)
  • 25 micron accurate engineering
  • 30 day Full Refund returns policy
  • Watch how to install video
  • See the benefits video
  • See the parts machined video

Betty's Secondary Mirror Holder fits onto the spider of your Newtonian telescope and provides very accurate and fast collimation of your secondary mirror. This mirror holder also  comes with a jig and a clever scale which with the aid of a laser collimator (not provided)  allows you to place the secondary mirror in the correct position under the focuser. 

V2 improvements include: stiffer mirror sticking pad, spring tension adjustment and mirrored tightening bolts which when turned in tandem prevent the veins bending when tightening the holder onto the spigot. 

Please contact me (astrobiscuit) if you have questions: sales@astrobiscuit.com.

If you have questions about Newtonian Collimation please watch this  video  which runs through basic collimation and why you need to do it.

Shipping & Returns

All taxes and customs charges included

Delivery by UPS in 3 -10 working days to USA,UK, EU and 10 days to the rest of the world

If you have any problems please email me (astrobiscuit) directly sales@astrobiscuit.com

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    Customer Reviews

    Based on 6 reviews
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    Eric Paul J De Lamper
    Big improvement over original secondary mirror

    It's now so easy to collimate . Under 1 minute and it's done. The telescope is a Skywatcher 130pds. Installation is easy. Just one remark, on this telescope you don't need any spacer for the correct height.
    Highly recommanded.

    D
    Daniel Achorn
    Worked great, easy assembly!

    Took only a few minutes to put together. I was able to quickly collimate my secondary and primary in about a minute using a laser collimator

    J
    Jonathan Hayton
    The best.

    This is modern 2ndary holder uses design elements inspired by days gone by. Far superior to anything on the market.

    M
    Marcel Roth
    High Quality improvement for Newts

    A must have for every owner of a newtonian telescope. That's all you need to know. Everything came in a neat little package and immediately after opening it, everything looked high quality.

    K
    Keith Harding
    Witchcraft

    Great support from Rory
    Well made and presented.

    This is Witchcraft!!!! Collimation in under 4 minutes 🙂

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