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Unfortunately this is probably impossible. Mirrors are usually made of pyex or plate glass which is unsuitable for making a high quality lens. Refractors normally require two glass types - a crown and a flint. Each of the four surfaces must be ground and polished to the right radius. Mirrors are cheaper because only one surface needs to worked.
If you want excellent images on a budget then a long focal length mirror is a good option, assuming you can mount it well.
Hope that helps,
Rod.
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