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  #1  
Old 21-10-2018, 08:42 AM
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that_guy (Tony)
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Orion 0.8x Reducer question

Again, I'm looking at options for correctors for my new ED72 and looking for cheaper alternatives to the dedicated flattener. I see that theres an Orion 0.8x reducer AND a Orion flattener. I've heard that the 0.8x reducer also flattens as well but wondering if it flattens the whole field with a full frame dslr. Also, will the clear aperture of 38mm be enough to not vignette with a 35mm sensor?
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  #2  
Old 21-10-2018, 10:32 AM
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Joshua Bunn (Joshua)
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Hi Tony.
A clear aperture of 38mm would heavily vignette a full frame chip, considering it's diagonal length is 43mm... and based on that, I highly doubt the flattener would flatten the whole field as well.


Regards Josh
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