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Burgess Optical / TMB Planetary Eyepiece

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Does anyone know how these eyepieces generally perform in a f4.8 Newt, more specifically i'm looking at the 4mm TMB Planetary Eyepiece to use in my 10" for close views of the moon, saturn and jupiter.

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I've got the TS Planetary HR versions of these (the 5mm and 4mm) which are more or less identical to the TMB / Burgess versions and I'm very impressed by them. Admittedly my dob is F/5.9 so it might not be as critical as your 10 inch.

I've posted some notes on them in the reviews section.


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Hi there, I've got the Burgess/TMB 4mm in my 200mm f6. I have to say that when seeing permits, it's an absolute stunner !! Crisp throughout the fov and a joy to use. Love to have a 5mm or 6mm too as I'm likely to get a great deal more use. On the moon it's magnificent, LOW ORBIT type stuff.


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