ATM focal reducer

["Amelia Thomas" <amelia_thomas@hotmail.com>]

Sorry about that previous message I hit the wrong button. Anyhow I have a 
question. Is there a commercially available focal reducer designed for a 
newtonian telescope? Can one be made using readily available optical 
components? Is there a website concerning such a optical arrangement? The 
telescope in question is already pretty fast, F5. I know that reducing the 
focal length would introduce coma. Any help would be appreciated. Thanks, 
Amelia

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