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Best wide view low power for a 125 ETX?

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#1 CHASLX200

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Posted 20 March 2018 - 06:06 PM

This seems to be a pretty high power scope. Even with my 32mm Tele Vue Plossl finding stuff is a pain. I bought just the OTA and has drop dead killer optics, but the rest not so much.  I am going to try to rig up a 8x50 finder to work on this scope with a ring i will have made.

 

I could go with the 2" after market back plate called a WEGAT so maybe i could get a wider field of view using a 2" low power eyepiece. Not sure if that would really work or be like a C5 were using a 2" eyepiece seems to do no good.


Edited by CHASLX200, 20 March 2018 - 06:08 PM.


#2 fcathell

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Posted 20 March 2018 - 06:25 PM

At F/15 the 32 mm eyepiece and 0.9 degrees is about the best you are going to do.  A 40 mm will definitely vignette. This is definitely a narrow field, high power planetary/lunar scope.

 

Frank


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#3 CHASLX200

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Posted 20 March 2018 - 06:44 PM

At F/15 the 32 mm eyepiece and 0.9 degrees is about the best you are going to do.  A 40 mm will definitely vignette. This is definitely a narrow field, high power planetary/lunar scope.

 

Frank

That's what i was thinking.



#4 msl615

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Posted 20 March 2018 - 06:48 PM

The WEGAT back is excellent though, because it does allow you to use SCT Crayford types of focusers and eliminate mirror shift and drifting. It also removes the plastic back housing, flip mirror, etc.   Totally easy to install.

 

Mike



#5 CHASLX200

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Posted 20 March 2018 - 06:58 PM

The WEGAT back is excellent though, because it does allow you to use SCT Crayford types of focusers and eliminate mirror shift and drifting. It also removes the plastic back housing, flip mirror, etc.   Totally easy to install.

 

Mike

I think am going for the WEGAT.  The image shift and focuser is as bad a older 12" LX200 a friend had back in the 90's.



#6 Escher

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Posted 21 March 2018 - 07:46 AM

WEGAT plus Agena SWA 2” 38mm - no vignetting. The 38mm is my go-to for wide field. It’s a bit soft at the outermost edge, but you don’t notice it unless you look for it. As an extreme test I tried the SWA 38 with the 6.7 reducer and that had a lot of vignetting, about 1/3 of the field.

#7 CHASLX200

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Posted 21 March 2018 - 05:51 PM

WEGAT plus Agena SWA 2” 38mm - no vignetting. The 38mm is my go-to for wide field. It’s a bit soft at the outermost edge, but you don’t notice it unless you look for it. As an extreme test I tried the SWA 38 with the 6.7 reducer and that had a lot of vignetting, about 1/3 of the field.

Well that is good news.  I plan to get the WEGAT.




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