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Old 28-09-2014, 06:05 PM
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uwahl (Ulrich)
Mr Avalot To'Learn

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Join Date: Jul 2008
Location: Newcastle, Australia
Posts: 159
Max EP focal length for Meade 10" F8 ACF

Hi All

I am looking at buying a 2", 40 or 50 mm focal length EP for my scope. I have read much of the past posts and advice given to others about very long focal length eyepieces in this type of scope. These tell me that :-

1 There are no problems using these long focal length eyepieces or

2 There will be considerable vignetting at this focal length and/or

3 You will see an image of the secondary mirror in the middle of the field of view with very long focal length EPs so I am somewhat confused by these contradictory messages.

Before spending the dollars for a good 40 or 50 mm eyepiece is there anyone out there who has a 10" ACF and has used an EP of 40mm focal length or longer?
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