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Tele Vue5x Powermate 1.25 inch (1-1/4 in.)

Q: I'm not clear on how to calculate the "25x per inch of aperture of the telescope" with a barlow. If I have an ED80T CF, which Powermate do I need?

Aperture = 80mm = 80/25.4 = 3.15inches25x per inch of aperture = 3.15 x 25x = 78.8x = Approx. 79x magnificationNote that this calculation is independent of the use of a barlow. The power you get will depend on the exact barlow/eyepiece/telescope combination used but the 79x is what you want to compare your magnification with. You can refer to any basic astronomy site or book to determine how to calculate the actual magnification you get with your specific setup.

Q: do you have these in stock??

At this time, we do. Thank you.

Q: Will this work with an Orion XT10?

Yes, ir works in every telescope With 1.25 inch, but if you used too much power the image is very difficult to focus, for your telescope the maximum power should be 200x-250x!

Q: Does the televue barlow come with only the brass ring or is there a model without the brass ring but instead with a padded point screw version?

Hi Bob, the TeleVue 5x PowerMate comes with a brass ring for securing 1.25” eyepieces. The ring if desired can be removed. Enjoy! Cheers, Robin CyclopsOptics Ltd.

Product ID: 265410725

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Tele Vue5x Powermate 1.25 inch (1-1/4 in.)

Have a Question? See What Others Asked

I'm not clear on how to calculate the "25x per inch of aperture of the telescope" with a barlow. If I have an ED80T CF, which Powermate do I need?

do you have these in stock??

Will this work with an Orion XT10?

Does the televue barlow come with only the brass ring or is there a model without the brass ring but instead with a padded point screw version?

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