No steps to heaven!

SDM008fTerry Dougherty had his feet firmly planted on the ground when he took possession of SDM008 after an extreme makeover saw it converted into a folded Newtonian.

Terry loves being able to observe any object without using a ladder! It has the convenience of a 15″ Dob with the light collecting and resolving power of a 25″ with no noticeable loss in light gathering power, contrast or resolution.

This amazing instrument has been designed so that it can be used in its original “full length” configuration or can be folded using shortened poles and a special upper tube assembly, sporting a 9″ circular flat and 4.5″ elliptical diagonal flat both by Terry Ostahowski. The conversion process takes just a few minutes, but we suspect that it will stay folded for quite some time.
SDM008 is undeniably two scopes in one and to celebrate this special instrument, we have given it gallery entries for both its classic and folded configurations.

2 thoughts on “No steps to heaven!

  1. I would like to know how to collimate a folded newtonian. Your help would be greatly appreciated.

    Thanks much
    Val Picotte

    • Hi Val. Good question but difficult to answer in a few words. Send me an email or give me a call. It’s a lengthy process and done in reverse. Best not to touch the primary or secondary in the field. With a quality build a minor tweak of the tertiary should be all that’s needed. Ideally suited for an observatory scope. All things considered a modern fast mirror is a better choice.
      Peter Read
      SDM Telescopes

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