Length of 2x TV Barlow nose end?

[Guest]

Hey Astronomers,

does anyone of you know the length of the nose-end of a TV 2x Barlow (as shown in the picture below)?

I can get such a Barlow for a good price, but would like to know if it collides with the mirror of my star diagonal (otherwise I'd have to order a 1.25" stop-ring).

Have a nice day!

Raphael

[RME1]

Hi erraph,

Just measured mine and it's 2 3/16". I find that it's ok with a 2" diagonal but with an 1.25" WO diagonal I can still see about 3/4" of the silver barrel. There is a 'stop' inside the 1.25" diagonal, so it won't hit the mirror. You'll have to check yours for this.

Hope this helps,

Richard.

[Guest]

Great!

Thanks, Richard!

This helps me a lot, so I know it'll fit in my diagonal without scratching the mirror.

Raphael