Jacobs Digital

09 480 5903

www.jacobsdigital.co.nz

9 Mokoia Road

Birkenhead, Auckland 0626

OPEN: 9am to 5pm

Monday to Saturday

Professional Optical Repairs

Binoculars, Telescopes and more

Optical repairs

We've been repairing optics like binoculars and telescopes in our shop for over 30 years. Every repair case is different, so if you have an optical device that needs work, get in touch for advice or pop into the store and one of our team will help you out.


Telescope Collimation

Most reflectors and SCTs will need collimating occasionally. It can be tricky and time-consuming, and if you don't have the time or the tools to do it yourself we offer collimation as a service at our Birkenhead retail shop.

What to bring: In most cases we don't need the telescope mountings or accessories, just the OTA. If your telescope is 11" or bigger, please bring the mountings as well. Drop in to our North Shore store, or get in touch first if you'd like to confirm.

Reflectors

Two mirrors

Is your telescope not as sharp as it used to be? Having trouble focusing, with the image generally not looking right? It might be time for a collimation.

Reflectors have two mirrors, a primary and a secondary, that need to be aligned for the telescope to focus correctly. If you see the image below when looking at a star either in or out of focus, your reflector requires collimation.

Reflector telescope collimation example

Cassegrains

Lower maintenance

Cassegrain telescopes are sturdier and require less collimation than reflectors, but like any highly tuned instrument they require maintenance at some point. Spotting an out-of-collimation Cassegrain is easy: defocus a star and check whether the black circle in the middle is centred.

When you defocus a star you should see the image on the left. If you're seeing the image on the right, your scope requires collimation.

Cassegrain collimation comparison

Need a repair or collimation?

Get in touch with the details of your optic, or drop into our Birkenhead store and we'll have a look.

Contact us

If you have any further questions about this service you can
call us on 09 480 5903 or alternatively email us using the form below.

Visit our store

You can visit our retail store from Monday till Saturday, 9am to 5pm.
Our Address: 9 Mokoia Road, Birkenhead, Auckland 0626, NZ.