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Replacing finder scope for illuminated

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6 replies to this topic

#1 wheelers4life

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Posted 02 December 2019 - 10:03 PM

Today I received my Orion CT 80 refreactor. I received my illuminated eyepiece. I forgot to order my dovetail bar. So I ordered it today. What do you think about this scope for an illuminated finder scope, It is not plastic like I heard other people say about this scope. It does not feel very well made though. I might even try to image with it just to see how it does for some of the larger dso that I cannot fit in my scope. I was wondering If I should send this back and just purchase a illuminated finder scope or just use this one.  This will go on top of my edge hd 8 with my CGEMII mount.

Thanks



#2 speedster

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Posted 02 December 2019 - 11:07 PM

I don't have an answer but I'm 20 miles west of you.  I thought it might be nice to get a list of people in our area in case we ever want to do something.



#3 wheelers4life

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Posted 03 December 2019 - 01:22 AM

Sounds good

#4 SloMoe

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Posted 03 December 2019 - 08:19 AM

Do you have it in a set of alignment rings to mount it in?

 

Won't need a redicel eyepiece if you can't adjust it's aim,

 

Dove tailed piggy back? Yes, it will have the versatility of selected eyepieces and a wider fov than your edge.

 

Not a bad scope for low mag wide field views, 

 

I was going to use a similar scope as a finder for my dob, but the weight of it got past my limit so I re-purposed it as a terrestrial spotting scope. 

 

Higher magnification will bring on the CA factor, but below 50X should be ok.

 

I use this online calculator for my eyepiece selecting,

http://www.csgnetwor...m/telefov.html 

 

A 20mm 82° will give you a magnification level of 20X and a TOFV OF 4.1°

So like a TV Pan 19 would be great in it for your needs.


Edited by SloMoe, 03 December 2019 - 08:29 AM.


#5 wheelers4life

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Posted 03 December 2019 - 08:47 AM

Yes I have the rings. Just waiting on the dove tail bar. Awsome sounds good

#6 Jon Isaacs

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Posted 03 December 2019 - 09:06 AM

A 20mm 82° will give you a magnification level of 20X and a TOFV OF 4.1°

So like a TV Pan 19 would be great in it for your needs.

 

 

There are no 20mm 1.25 inch 82 degree eyepieces.  The maximum possible field of view with this scope is slightly less than 4.0 degrees unless one goes with a 2 inch focuser. The 19mm Panoptic provides a 3.05 degree TFoV.  

 

I'm not sure why the OP wants an 80mm finder on a GOTO scope? 

 

It's the focuser that's plastic, the ST-80 weighs about 3 pounds, the CT 80 about 2 pounds.  

 

Jon



#7 wheelers4life

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Posted 03 December 2019 - 11:24 PM

I'm using it as a finder to help alignment. I cannot see the cross hairs. So I went this way for an illuminated scope


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