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Bit of a silly question

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3 replies to this topic

#1 Andrew Brown

Andrew Brown

    Mariner 2

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Posted 22 October 2020 - 06:03 PM

Can anyone simply explain, why, when using a mid priced TS 1-1/4 prism diagonal  when looking at high mag on the moon I can see a reflection of my eye?  And is there anything I can do to prevent this [apart from NOT looking at a large bright object/sell it~I got those bits covered]  blackeye.gif

 

Thanks.



#2 Bean614

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Posted 22 October 2020 - 06:24 PM

Well Andrew, if you could tell us WHAT telescope you're using, and its  focal ratio,  we might be able to help. 


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#3 RalphMeisterTigerMan

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Posted 22 October 2020 - 06:26 PM

I it is one of the Amici 45-degree prisms, they are quite notorious for that. They are okay for terrestrial viewing but thats about it.

 

Clear clears

RalphMeisterTigerMan



#4 Jim T

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Posted 22 October 2020 - 06:38 PM

Try putting a dark hood over your head and eyepiece.  Too much light is on your face,


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