Confused about Barlow Lens

[EnglishNightHawk]

Am I right in saying any Barlow lens should have a plastic lens (cheap ones) or multi coated glass lens inside the tube? I had a rubbish 3x Barlow and that had a plastic lens, I ordered an Orion Shorty 2x Barlow lens and it's just a hollow tube that you can drop something through no lens of any kind.

Any advice appreciated, may sound silly but if you don't ask you don't know.

[Merlin66]

Sounds very odd.........

All barlows have a glass negative lens in the tube.

Something wrong there...........

[Dave In Vermont]

Agreed with Merlin. There has to be a lens, or it's not a Barlow. Contact the shop/site you bought it from and return it. And it should be made of glass.

Clear Skies,

Dave

[EnglishNightHawk]

 I was 99.9% sure but wanted to confirm before I contacted them. I looked around and it looks like the lens system screws into the bottom and they completely forgot it and just sent me the upper tube. . .   

Thanks for the info!

[Pete Presland]

sounds more like some sort of extension tube, more than a barlow.

[rory]

 your orion shorty should have a black bottom at the base that screws into the silver barrel. if not  you simply have a tube . probably an honest error. look at an image online of an orion shorty (not shorty plus)  and youll see.

[ronin]

The lens should not really screw into the bottom of the tube, they are normally at a fixed location, otherwise the "barlow" effect is undefined.

Suspect that you have a return from someone that the original took the lens out of, or - more likely - you have an extension tube that has managed to get mixed up. In which case some one will get a barlow and not an extension tube.

[EnglishNightHawk]

I looked it up and it's definitely an Orion Shorty 2x Barlow, without the black screw in lens system. I have already requested a return, just wanted to be 100% sure.

Thanks for the info everyone! 

[bill_reed]

the barlow I have is a X2 and it had a screw off black surround lens at the bottom you can take it off leving a hollow tube and put onto the eyepiece and make it into a X1.5 barlow! so it sounds like it the same type as I have without the barlow lens fitted!

[bill_reed]

the barlow I have is a X2 and it had a screw off black surround lens at the bottom you can take it off leving a hollow tube and put onto the eyepiece and make it into a X1.5 barlow! so it sounds like it the same type as I have without the barlow lens fitted!

like this!