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Old 24-07-2020, 11:19 AM
Spidy (Phil)
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Televue Powermate price difference

Looking into Barlows and came across a lot of recommendations for Televue Powermate series.


I'm wondering though, why does a lower power (X2) powermate cost almost 40% more than the higher power (2.5) powermate?


They are both advertises as 2" series lenses.
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Old 24-07-2020, 11:25 AM
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Outcast (Carlton)
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2.5 x powermate is only 1.25" not 2"
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Old 24-07-2020, 11:33 AM
Spidy (Phil)
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Quote:
Originally Posted by Outcast View Post
2.5 x powermate is only 1.25" not 2"

Uh, I see. Thanks Outcast. Would have made a very costly mistake.
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Old 24-07-2020, 11:44 AM
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Old 24-07-2020, 01:12 PM
Spidy (Phil)
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One more question if I may.


Do people recommend these things for planetary photography as well as viewing? Or, for photography, am I better off with a cheaper barlow?
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Old 24-07-2020, 04:00 PM
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A 2.5x powermate was one of the first accessories I bought... I have owned a 2x barlow, I prefer the powermate.

For one, it is parfocal.. ie: you don't need to refocus when you switch from just an eyepiece to eyepiece plus powermate. Secondly, the powermate is optically far superior to any barlow I have ever owned...

Cheers
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Old 24-07-2020, 05:03 PM
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rustigsmed (Russell)
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well having one of my saturn shots feature on Tele Vue's blog this week for using a powermate (5x) i can absolutely confirm they are definitely good for planetary.

what setup have you got Phil?

(scroll down to saturn)
http://televue.com/notamnomen/2020/0...ontent=C2020F3

i also have just a bintel 2" 2x barlow which got me some nice snaps (just not that zoomed in as the 5x). but i'd say going over 2x i would want a nice piece of optics like a powermate.
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Old 25-07-2020, 02:11 PM
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With Jupiter and good seeing and high power, I can firm that the TV 2.5x Powermate was far superior to my old 2x Meade barlow. Although I was pushing at even higher power with the Powermate, the image flatness, control and sharpness was so much better than the barlow. You could tell the barlow was doing 'something' to the image, but the Powermate simply amplified in very clean manner, it's hard to describe. Fox
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