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View Full Version here: : Review: Refractor and Focal Reducer Trials


iceman
01-02-2008, 06:54 AM
Hi all

Paul Russell ([1ponders]) has written a very informative review comparing a number of focal reducers in combination with his ED80, titled Refractor and Focal Reducer Trials.

You can read the review on the IceInSpace Reviews (http://www.iceinspace.com.au/?reviews) page, or directly by clicking on the link below:

Refractor and Focal Reducer Trials (http://www.iceinspace.com.au/index.php?id=93,458,0,0,1,0)

Thanks to Paul for writing the review. If you'd like to submit an article or review to IceInSpace, please contact me (http://www.iceinspace.com.au/?contact).

iceman
01-02-2008, 08:19 AM
Review uploaded.

Octane
08-10-2008, 09:31 PM
This is an excellent review and I can't believe no-one's commented on it! I found it to be very helpful.

I never had any luck with a Meade 0.63x focal reducer when I had my 8" LX90 LNT.

Would the new version III William Optics focal reducer/field flattener be any good with an Orion ED80 (Saxon, actually, but, both taste like pineapple), or is it designed for larger aperture scopes? Should I just stick with the version II?

I will be imaging with a Canon EOS-350D.

Thanks for the great work, Paul.

Regards,
Humayun

Astrod00d
08-10-2008, 10:06 PM
Yes, indeed it's a great review and I've found it very useful. Thank you Paul for your great effort and thanks to Humayun for reminding us of it!

I did try the WO pflat III with my ED80 and I found that it overcorrected. The corner stars looked like little crosses.
Now I have a pflat II which seems to work better with the ED80 (but I haven't used it much since I got the 127mm APO)

Cheers,

Rob

Octane
08-10-2008, 10:19 PM
Rob,

Thanks for that! I'll save myself the $100 (approximately) and get the version II.

Cheers.

Regards,
Humayun

[1ponders]
09-10-2008, 09:06 AM
Thanks guys. You're right about the III Rob, there are over-correction issues with it and the ED80.