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  1. #1
    dmatch's Avatar
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    Default Strange EP effect



    I am looking at Jupiter tonight and noticed a wierd thing I had never noticed before. Imagine looking at the sky and seeing a out of focus moth flitting around the field of view. Is that just Jupiter reflecting off my eye and back onto the EP itself?
    Dave

    Zhumell Z8 Dob , Zhumell Wide Field 30mm,20mm, 10mm, 9mm Plossl, GLP and mount

  2. #2
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    Default

    I've seen that before during daytime viewing. Chalked it up to a reflection off of my eye as well. Does it go away when you back waaay off of the EP?

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  3. #3
    dmatch's Avatar
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    Default

    I think so.
    Dave

    Zhumell Z8 Dob , Zhumell Wide Field 30mm,20mm, 10mm, 9mm Plossl, GLP and mount

  4. #4
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    Default

    You know, I just recently noticed this effect in my eyepieces as well just about a week ago.

    I suspect that it is indeed a reflection off the eyeball, and I only recently noticed this because my eyes have become more "trained" so to speak. It can be kind of annoying, but it only happens to me with Jupiter. I suspect the moon is too big and bright to notice, but Jupiter is small enough to resolve the fluttering "dot" but bright enough to create it. I notice it when I have my eyeball aligned almost dead centered to the EP, so the fluttering dot doesn't last long, but definitely comes and goes.

    Oh and to make matters worse, it just so happened that I noticed this effect AND the secondary shadow in the EP right after I had collimated my scope, so I was pulling my hair out for days trying to figure out what I did wrong. As it turns out, they were always there, it was just that I wasn't experienced enough yet to notice.

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  5. #5
    dmatch's Avatar
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    Default

    Well, got an email back from astronomics and I got the ok to send my EP back for a replacement. That's good news. Just wondering now if I should have spent the extra $40 and gotten an Orion Flat Field. I wonder how they compare to each other.
    Dave

    Zhumell Z8 Dob , Zhumell Wide Field 30mm,20mm, 10mm, 9mm Plossl, GLP and mount

 

 

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