Televue Paracorr?

michael o'connell wrote:

My concern is that at present, the three best eyepieces I have all come to focus. However, if I use a parcorr with the eyepieces, will they all still come to focus, or will I need to modify the telescope in some manner?

Thanks,

My question exactly, does it change the focus position drastically for the scope.

It changes the focal plane, extending it outward to about 2 to 3 inches. The focal length is also extended. In my case f/4.2 extends to f/4.8. Focal lengths are extended by X1.5. I have only used the one eyepiece, so I don't know if the focus changes for other Nagler series eyepieces.

I use a different arrangement now of using a Wynne design corrector. This solves the coma and astigmatism with an excellent flat field. However, it has the advantage of that of a reducer. In my case from f/4.2 to f/4.0. This of course provides a slightly wider FOV.

Eamonn A

Thanks Eamonn.

BTW, is it the tunable version you have Eamonn?

It is the tunable version which can be used either for visual or CCD camera.

Eamonn A

Anyone bringing one of these to the CSP in January, ??
If you are, I'd love to give it a try on the obsessionator, if you do, I'll give you 5 minutes with the scope :lol: