ICEINSPACE
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Moon Phase
CURRENT MOON
Waning Gibbous 94.9%
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20-02-2007, 01:52 PM
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Registered User
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Join Date: Jan 2007
Location: Sydney
Posts: 193
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Does anyone know of a good 5x Barlow
Hey everyone,
Just wondering if anyone could recommend a good (actually v.good) 5x Barlow? Price isn't really a consideration.
Cheers in advance.
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20-02-2007, 01:58 PM
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~Dust bunny breeder~
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Join Date: Nov 2004
Location: The town of campbells
Posts: 12,359
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televue powermate.... nuff said 
its what the pros here use.
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20-02-2007, 02:08 PM
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Registered User
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Join Date: Jan 2007
Location: Sydney
Posts: 193
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I was considering the Meade series 5000. How does it compare?
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20-02-2007, 02:34 PM
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Sir Post a Lot!
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Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,761
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Do the Meade make a 5x barlow? I've only ever seen the Powermate as a 5x barlow.
It's the best. About $290.
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20-02-2007, 02:39 PM
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Registered User
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Join Date: Jan 2005
Location: Sale, VIC
Posts: 6,033
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If "price isn't really a consideration", just get the Powermate. I have not used the Meade product in this instance, but with every other meade EP or barlow I compare to similar TV product, I consistently find TV to be clearly superior in every way.
I assume you want a 5x barlow for imaging. It has very limited use for visual observing.
Last edited by janoskiss; 20-02-2007 at 02:51 PM.
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20-02-2007, 02:58 PM
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6000 post club member
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Join Date: Oct 2005
Location: Launceston, Australia
Posts: 6,570
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5x Televue Powermate is the go.
If money is no object, buy two! 
Yes..they are that good.
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20-02-2007, 03:05 PM
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Registered User
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Join Date: Jan 2007
Location: Sydney
Posts: 193
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Quote:
Originally Posted by janoskiss
If "price isn't really a consideration", just get the Powermate. I have not used the Meade product in this instance, but with every other meade EP or barlow I compare to similar TV product, I consistently find TV to be clearly superior in every way.
I assume you want a 5x barlow for imaging. It has very limited use for visual observing.
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Yeah I need it for imaging.
I'll look at the TV.
Thanks for the help. 
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20-02-2007, 03:42 PM
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Astro Shop Minion
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Join Date: Jan 2006
Location: Mount Colah
Posts: 190
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Meade make a 5X Telextender, as well as a 2X and 3X, and a 2" 2X.
Clear skies,
Shane
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20-02-2007, 03:53 PM
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Registered User
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Join Date: Jan 2007
Location: Sydney
Posts: 193
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Quote:
Originally Posted by merlin8r
Meade make a 5X Telextender, as well as a 2X and 3X, and a 2" 2X.
Clear skies,
Shane
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Sorry all these names are confusing. Is that the same as a barlow?
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20-02-2007, 04:25 PM
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lots of eyes on you!
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Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
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i can honestly say my 5x powermate is awesome and the best $290 i have spent. The beuaty is that if you add a 100mm extension tube, then you get 7.7x!
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20-02-2007, 04:37 PM
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6000 post club member
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Join Date: Oct 2005
Location: Launceston, Australia
Posts: 6,570
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Dave
Do you know how to calculate the extra magnification based on the length of extension tube used?
I've got a 50mm extension tube.
Was wondering what that would give me when combined with my 3x TV barlow or 4x Powermate?
But would also like to calculate what other length extension tubes would give me when used with a variety of barlows/powermates with the 9.25???
Anyone else with the answer please feel free to chime in
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20-02-2007, 05:14 PM
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6000 post club member
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Join Date: Oct 2005
Location: Launceston, Australia
Posts: 6,570
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Yeah. Seen that before.
Not exactly precise.
Want to be able to calculate mag from which barlow i'm using with what length ext tube etc
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20-02-2007, 05:26 PM
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lots of eyes on you!
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Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
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cool, not sure of the maths
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20-02-2007, 07:20 PM
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Dazzled by the Cosmos.
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Join Date: May 2005
Location: Brisbane
Posts: 11,709
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What 'scope are you planning to use the x5 PowerMate or Barlow on? I have a x5 PowerMate and the seeing conditions only become favourable between 6 and 10 nights per annum for my Vixen 4" F9 refractor and even less for my Celestron C9.25 F10 SCT.
Cheers
Dennis
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21-02-2007, 07:54 AM
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6000 post club member
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Join Date: Oct 2005
Location: Launceston, Australia
Posts: 6,570
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Thanks Steve 
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21-02-2007, 09:07 AM
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Astro Shop Minion
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Join Date: Jan 2006
Location: Mount Colah
Posts: 190
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A telextender performs the same job as a barlow, but has more elements in it. Plus the build quality is better. I doubt it would perform as well as a Nagler though!
Clear skies,
Shane
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21-02-2007, 10:01 AM
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Registered User
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Join Date: Jan 2007
Location: Sydney
Posts: 193
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Quote:
Originally Posted by Dennis
What 'scope are you planning to use the x5 PowerMate or Barlow on? I have a x5 PowerMate and the seeing conditions only become favourable between 6 and 10 nights per annum for my Vixen 4" F9 refractor and even less for my Celestron C9.25 F10 SCT.
Cheers
Dennis
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I'll be using it on an 8 inch LX-90 GPS.
I'm now torn between the Meade tele-extender and the Powermate.
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21-02-2007, 10:33 AM
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Registered User
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Join Date: Jan 2005
Location: Sale, VIC
Posts: 6,033
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Quote:
Originally Posted by merlin8r
A telextender performs the same job as a barlow, but has more elements in it. Plus the build quality is better. I doubt it would perform as well as a Nagler though!
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Apples and oranges, microwaves and TVs. Nagler being an eyepiece would make a pretty useless barlow. 
I have been told that the tele-extenders work on the same principle as the powermates.
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