Help! What is wrong with my eyepiece?

[Adz]

Hi all,

Receieved a BGO 7mm and put it through its paces tonight. I thought it would be great but I believe there to be a problem with it.

A pale lighter circle is apparent in the centre of the field of view. I thought perhaps it was my scope but I have tried it on both of my scopes this evening and also compared it with my BGO 5mm.

Searching the net I found this: ASTRO-CHAT - Astronomy :: View topic - Baader genuine Ortho 7mm ep

Who seems to have the same problem.

Anyone got any advice on this? I am guessing its something wrong inside the lenses of the eyepiece but BGO's have always been outstanding quality and performance for me.

Thanks,

[Peter Drew]

What you describe is very much like condensation between the lenses of the eyepiece, it can't be wiped off and can take some time to evaporate off.

[Adz]

Thanks Peter. Should I leave it somewhere warm for a while and give it another go?

[spaceboy]

I would have thought air circulation would be best to remove any moisture between the lens ?? If I were in the same situation I would probably take it out of your ep case, leave the end caps off and lye it on it's side near an open window out of sunlight.

[Emperor315]

I have always found room temperature to work best for letting water evaporate. I worry that things that aren't built to endure higher heats could develop stains or further damage

[Adz]

Well its not water moisture because none of the attempts have helped. I figured it wouldn't be anyway as the centre illuminated part is too crisp an edge. I'm sending it back tomorrow, what a disappointment

[Emperor315]

That is really disappointing. Are you getting an exchange or a refund?