why ? we here at northland astro society just accuired a celestron c11 .every member who has had a chance to view thru it agrees that it has the sharpest optics any of us have ever seen in a reflecting telescope bar none.the coatings and quality of the primary allow views refractor sharp,i should know as i reguarly observe with my 102mm flourite celestron but as they say appature rules.sorry that your 12in dosent satisify. hope this helps.. clear skies.
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