Barlow Lens problem

[juleshooper]

I recently acquired a Kson 2x achromatic barlow from a friend. I am aware that it is not particularly good quality. Nonetheless I assumed that I would be able to see someting through it.

I have tried using it with some celestron eps but I can see absolutely nothing through it.

The only way I make anything out is to pull it right out of the ep holder so it is sticking out about an inch and a half. It is then very fuzzy and obviously this is not how it is designed to be used.

Have I completely missed the point of using a barlow lens? I assume I am being thick as surely no company can produce something so rubbish and then sell it for £25?

Thanks for any advice,

Jules

[kniclander]

it sounds like you do not have enough "out" focus. Some barlows come with the lens bit screwing off the body and it might work if you screw off the lens bit and screw it direct to your eyepiece.

[Starjumper]

Hi and welcome to SGL.

John

[Talitha]

Hi and welcome to SGL, Jules.

[SteveP]

Hi Jules

A warm welcome to SGL.

Trying new equipment can be very frustrating especially when it doesn't seem to fit. Unfortunately there are many different designs of scopes and many more different designs of eyepieces ... and so on. In order to reach focus, the 'eyepiece' has to be at a particular distance from the scope. Exactly what that distance is and where it is measured from is again a function of the type and design of the scope. That's what you're experiencing in only being able to reach focus with the EP positioned further out. In order to get around this issue, manufacturers sell a range of adapters and extender tubes to reach focus

Have a look here .....

Adaptors - Two-inch Focus Extension tubes

HTH

Steve

[WayBig]

I've got a kson 2x barlow.

It gives very poor views. I dont even keep it in my eyepiece box any more, for me it doesnt give anywhere near sharp focus and has a lot of chromatic problems. So even if you sort out the problem with your out focus - you wont get much joy from the kson barlow.

It's not just my barlow that has the issue, a friend has one too with the same issues

[juleshooper]

Thanks to everyone for the welcomes and advice. Will give up on this one!

Jules

[Bizibilder]

Welcome to SGL Jules!!

[Rusty Strings]

Hi Jules and a welcome from me too

John

[johnh]

Welcome to the Forum Jules.

JohnH.

[glowjet]

Hi Jules,

A very warm welcome to SGL, hope you enjoy the forum.

John.