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Exist any extender for Skywatcher Quattro 250p, for exemple 1.5X?
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Lalo Juarez: Good Morning! Yes, there is an 1.5x extender with coma correction made by APM: https://www.teleskop-express.de/en/telescope-accessories-5/barlows-reducer-lenses-8/apm-2-newtonian-coma-corrector-and-1-5x-barlow-9273 |
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Or the APM 2.7,it really is good .
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Michael von Berner-Purgstall:Lalo Juarez: Thank you |
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How do the APM extender with coma correction compare with the Televue Powermates? I use the 2" 2x Powermate and it does well for me.
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Tim Stevenson: I don’t know, I just order APM extender 1.5X, I share with you my comments. You can connect camera, OAG or filter wheels un the Televue powermate 2”? |
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Lalo Juarez:Tim Stevenson: Yes ... the Televue Powermate 2" has a 48mm male thread so you can connect camera, OAG, and Filter Wheels/Holder |
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Tim Stevenson: Hmmm, I don't think it will correct the coma caused by a Newtonian, it's "just" an extender, good for Sun, Moon and planets but not for Deep Sky imaging. |
