The Stratuses are secure okay in the 2". NP. There is no compression ring, which would cause problems. These barlows are a bit hard to come buy. Everyone is pushing the Orion shorty plus instead.
The only place I know you can get the 1.25" Deluxe is from Sirius Optics QLD. Although you might have to nag them for it.
I rang them back in Sept wanting to buy one. They were ringing me back in two weeks after getting some in.
