Betty’s Secondary Mirror Holder
Betty’s Secondary Mirror Holder
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- 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 50-90mm 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.
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
Shipping & Returns
Free shipping USA, UK, EU
Delivery by UPS in 5 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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Free Shipping to USA, EU, UK
All Taxes and Customs included for USA, EU, UK
Customer Reviews
Great support from Rory
Well made and presented.
This is Witchcraft!!!! Collimation in under 4 minutes 🙂
Designed and built by someone who actually knows what we want- a much easier and consistently stable way to collimate a newt. Easy to install, even easier to collimate, an absolute god send. Holds collimation all night- absolutely brilliant.
