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I use a Dioptrx to deal with the 1.25 astigmatism in my observing eye. Very convenient and more pleasant than observing with glasses or contacts. At 0.25 your astigmatism is pretty mild and would only be noticeable at large exit pupils I would think. The Televue website has a handy chart on how different degrees of astigmatism will be noticeable at different exit pupils. Also bear in mind that the Dioptrx does eat into the available eye relief - which is why I ended up selling my Ethos eyepieces and moving to the Delos.
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