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Thread: Dancing Pin Light??

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    Default Dancing Pin Light??



    I recently acquired a High Point 2" 2X Barlows and had a question.

    While using it last night, I noticed (for a lack of a better description) what seemed to be a "pin of light" that seemed to be moving around the EP while viewing. A reflection or a defect? It would just move around as my eye looked about. Any ideas?
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    Default Re: Dancing Pin Light??

    Most likely it's a reflection of some kind. Put a towel over your head so that it also covers the focuser and see if the light goes away. If it does, then it's definitely a reflection.

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    Default Re: Dancing Pin Light??

    Does it look like a little white fly buzzing around?

    Reflection. I get that on my GSO Barlow (same as Highpoint's) too, but not on every eyepiece. It can be a bit distracting at first, but I've learned to ignore it. I don't use my Barlow much anyway.

    Other than the occasional white fly, it's a good Barlow.
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    Default Re: Dancing Pin Light??

    Did you have the reflection without the barlow? Try the towel with and without the barlow to see if it is introducing the artifact.
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    Default Re: Dancing Pin Light??

    Might even be a reflection off your eye unto the lens... had that a while back ( watching the Sun ) ..

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    Default Re: Dancing Pin Light??

    Sound like the reflection of your moving eyeball onto the top eyepiece lens. If it is so, it is not related to the barlow, but to the eyepiece itself. Repeat the observation of the same target (I suspet it was Jupiter?) with the same eyepiece, but without barlow, to verify if it still happens.

    That kind of eyeball reflection is unfortunately fairly common, even with quite expensive eyepieces... It occurs when looking at brigt targets. I am not sure if there is a cure for it, other than finding the eye angle position which will reduce it, or still better, not show the reflection alltogether.

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