Does anyone know of a good 5x Barlow

[merlin8r]

The Powerview is not made by Nagler?

[janoskiss (Steve H)]

TeleVue is the company. Nagler is a type of eyepiece made/sold by TeleVue. You must be thinking of the TeleVue Powermate.

[merlin8r]

Oh I see. I didn't explain myself well! Al Nagler invented the Nagler, and started the Televue company. I meant the man, not the eyepiece. D'oh!

[Dennis]

Originally Posted by lineout

I'll be using it on an 8 inch LX-90 GPS.

I'm now torn between the Meade tele-extender and the Powermate.

Your 8” Meade is an F10 system, so using a x5 PowerMate would make it an F50 system. I rarely see any images taken at F50. I think that most high resolution Lunar and Planetary imagers seem to operate between F20 and F40, with the optimum range around F25 to F35.

The only time I have used the x5 PowerMate on my C9.25 F10 system is when I was imaging the Trapezium in Orion using the SBIG ST7.

Cheers

Dennis

[netwolf]

If you want a cheaper alternative barlow range is made by Paul Rinni, you can usully find them on Ebay or Surplushed. Search for Rinni on ebay.


Regards
Fahim

[Phil]

Televue powermate is the go if money is not a problem