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Neat little 40mm Unitron

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28 replies to this topic

#26 trainsktg

trainsktg

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Posted 21 June 2007 - 07:43 PM

Michael,

Thanks for the info on not being able to modify the 4VTE. I guess I'll just stash it back in the parts pile. I only paid a few bucks for it at the Goodwill.

Keith


Keith,

I also have one and Micha is right. However, when I get back from Texas in Sept I'm planning on converting it for use as a guide scope. I have been scratching out some ideas so I'll post pictures when I get it done around October.


Ya know, the build quality is there...all metal inside and out, a solid cast focuser...why did they put such a Most Emphatically NOT Haggis objective in it? Or is it the erecting system? Or did I happen to just get a stinker?

Keith

#27 Preston Smith

Preston Smith

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Posted 21 June 2007 - 10:35 PM

Ya know, the build quality is there...all metal inside and out, a solid cast focuser...why did they put such a Most Emphatically NOT Haggis objective in it? Or is it the erecting system? Or did I happen to just get a stinker? Keith


Keith, my objective is pretty good for its small size. Try taking the objective off and set up a small wood plank so you have the objective at one end and a star diagonal and a GOOD eyepiece on the other end where it picks up the focal point. See if you get a good sharp image. If so, it is probably the rest of the optics in the zoom and erector. There's some pretty small glass in that zoom assembly.

#28 trainsktg

trainsktg

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Posted 21 June 2007 - 11:13 PM

Yeah, I could make one of those 1.6" stick refractors like in the 'All About Telescopes' book. :jump: Good ATM idea.

Keith

#29 Preston Smith

Preston Smith

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Posted 22 June 2007 - 07:39 AM

Keith,

I tested the 40mm last night by simply removing the focuser and holding a diagonal and eyepiece about an inch or two from the end of the tube and it came to focus. Try putting the 40mm in a mount and check out the moon using the diagonal and eyepiece. That will give you a good test.


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