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If you want a faster scope buy a small ED refractor, not a Mak. It's a mistake to buy an f/12 scope then use a compressor to reduce it to f/8 or less. Much better to use no compressor, and choose longer eyepieces that are an appropriate match.
I also know you probably don't understand why, and will do it anyway. However, among the Mak users here, virtually none use compressors. There really is a reason.
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