I have a Fever…… Aperture Fever!

[Starkler (Geoff)]

Originally Posted by Louwai

To date, the one biggest down-side to the Obsession / SDM as to a C14 is that with a C14 I don't need to go climbing up ladders to look at stuff.

As long as the SDM came with EVERYTHING, then the ladder thing is really the only difference. (other than apature).

As an SDM owner I can say no ladder for me
Mine was planned that way from the very beginning that the eyepiece height at zenith matched my standing eye height.

Both Deep Sky optics and SDM were happy to work with my requirements in a custom built scope, which is something you wont get with Obsession.

[Starkler (Geoff)]

By the way, I think aperture fever is a preventable disease, you just have to resist temptation and NOT look through scopes bigger than your own.
I caught it by looking through an 18" obsession.

[PhilW]

Mine has the same logic. At 35cm and F/4.6 I can view the zenith without a ladder, even when the scope is mounted on a tracking platform. In fact, given that you're rarely viewing right at the zenith, you can get away with a slightly bigger scope (say 40cm F/4.5) and very rarely have to use a step stool.

[Matty P (Matt)]

Can you please enlighten me what SDM stands for? Sorry if it is a stupid question but I honestly have no idea.

[Starkler (Geoff)]

Originally Posted by Matty P

Can you please enlighten me what SDM stands for? Sorry if it is a stupid question but I honestly have no idea.

http://www.sdmtelescopes.com.au/

Size does matter.