Good Guiding scope combination with ASI174mm

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Karl Theberge avatar
Good day,

So I just set my RASA back in my observatory.  In the past I was using a ASI120mm with a Orion 130mm guide scope.

But now I have a ASI174mm so my 130mm scope corner are are far from flat.  And my guiding is the worst I have ever seen so far.

The 174 was great with my Edge8 thru a OAG but dont seem to cut it with that 130mm scope.

Any suggestions on what I should look into ?

Thanks

K
Jan Erik Vallestad avatar
I've used it with a 50mm guide scope, Astro Essentials 200mm F/4. I don't recall noticing anything weird about the corners. I've only used it rarely with my Samyang kit the past year, but it seems to work very well as far as I can tell.