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Hi Graham,
I think your on the right track with the Abbes.
For high mag planetary observing it is hard to go past a good Orthoscopic and the Abbe design has stood the test of time.
About 25 yrs ago I purchased a 6mm and 4mm version.
I have a 16" F4.5 Newt in my observatory and a 12" F5 Dob that I take out and about. I use the 6mm exclusively for the planets, about any night of the year and if the seeing is very good then the 4mm.
The contrast is excellent with these eyepieces, detail is sharp as. Have never noticed a problem with the FOV, spend my observing time admiring the stunning detail of the planet in the centre of the FOV.
This is a very subjective subject but these are my thoughts.
Cheers
Trevor
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