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StellaLyra Classical Cassegrain & Ritchey-Chrétien Telescopes


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After a bit of research, the Astro Essentials 0.75 reducer is limited to an image circle of 15mm which is too small for my ASI1600MM camera.

The CCD47 from TS can be used with a bigger image around 29mm if used with a backfocus of 85mm. Not sure what is the difference with the Astro Physics CCDT67, they seem to share the same characteristics. Although it seems hard to find the Astrophysics model currently.

I honestly find the Riccardi reducer a bit expensive compared to the RC8...

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