The Barlow Lens ?

[Mike Q]

Here is a nice little article explaining the difference between a barlow and a focal extender.

https://littleastronomy.com/focal-exten ... rlow-lens/

[Bigzmey]

I will definitely check to see if the floater observation is real but rationally speaking, it can't be.

I find my Barlow convenient because it multiplies the number of available focal lengths, not add one at a time like with individual eyepieces. In fact, my GSO 2" ED Barlow can be used at magnifications of 2x and 1.5x so the multiplication factor is 3 if I want to nitpick. I can use them with both 2" and 1.25" eyepieces so what's not to like. It's not a crummy Barlow and you can buy a few 1.25" eyepieces for its price, but the idea of a quality 2" Barlow appeals to me. For 1.25" eyepieces only, the advantage might be less.

Hi there,
Can you achieve focus with gso 1.5x because Im unable to achieve it when screwed with gso 30mm superview and super possl 9mm.

Welcome to TSS Conner! Since barlows change telescope focal length some scopes could run out of focuser travel with barlow. What kind of scope do you have?