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Thread: 4x powermate

  1. #1
    cmeg1's Avatar
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    Default 4x powermate



    Hello I just baught a 4x 2" powermate cause' I want to explore the possible resolving power of my telescope.
    I do have a question though.When they say it is essentially parfocal do they meen I will not need more focuser travel when using it with my eyepieces? I have run into that problem before,but I was luckily able to get a 100% refund on that eyepiece.
    Otherwise,it all sounds good.I will be able to get my money back if I do not like it.It will turn my 30mm 50x to 200x,my 18mm 83x to 333x.Including all my eyepieces I will have 50x,83x,167x,200x,333x.
    Now, it seems, I never use my medium power eyepiece at 83x,just the low and the high.Maybe 333x is usable on my scope, on the Moon or something,I want to know this stuff first hand.167x gives me very good detail on globulars.Maybe I can bump it to 200x with the powermate.I imagine I could on a planet.
    Anyway,it seems the most practicle way to explore the resolving power of my telescope with 12'' aperture and 1500mm focal length.I hope it does not need more focus travel though cause' if I have to buy some sort of extender, I will not be into it.I may be completely dissapointed anyway.
    Last edited by cmeg1; 07-05-2011 at 05:01 PM. Reason: make clearer

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    ​: Sky-Watcher 12" collapsible dobsonian w/Telrad
    Ep's: Explore Scientific 82*30,24,18 and 100*14,9 and Televue 4X Powermate

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    Default

    It works great for me. Check out my equipment in my signature area; we have almost the same equipment.

    I don't have any focuser travel issues with the Powermate. My three 2 inch eyepieces and 4X Powermate give me 50X, 75X, 107X, 200X, 300X, and 428X.

    One warning though: the Powermate with a heavy EP will cause you to need a counterweight, especially if you keep both your Telrad and stock finder mounted on the telescope.
    Name: Sam
    Equipment:
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    12” Collapsible Dob w/Telrad, Explore Scientific 30mm 82*, and 20mm, 14mm, & 9mm 100* EPs, Tele Vue 4X Powermate & Paracorr T2, 2" Lumicon UHC and ND13 (
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    ) Filters, 2" Astronomik OIII filter, dew heater system, and Nikon Action 7x50 EX Extreme ATB 6.4* binoculars & Celestron 15x70 binoculars.

    I'm enjoying learning the sky by star hopping; just charts, my binoculars, and my Dob!

  3. #3
    cmeg1's Avatar
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    Default

    Quote Originally Posted by samgray1 View Post
    It works great for me. Check out my equipment in my signature area; we have almost the same equipment.

    I don't have any focuser travel issues with the Powermate. My three 2 inch eyepieces and 4X Powermate give me 50X, 75X, 107X, 200X, 300X, and 428X.

    One warning though: the Powermate with a heavy EP will cause you to need a counterweight, especially if you keep both your Telrad and stock finder mounted on the telescope.
    Hopefully I do without counter balence issues,though I was suspecting that,I have taken my original finder off and mounted the Telrad by itself.Also,I rarely have my scope lower than 45deg. angle.I view mainly from home with some suurounding trees.What do you use for a counterweight?
    Thanks in advance

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    ​: Sky-Watcher 12" collapsible dobsonian w/Telrad
    Ep's: Explore Scientific 82*30,24,18 and 100*14,9 and Televue 4X Powermate

  4. #4
    samgray1's Avatar
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    Default

    My counterweight is super-simple and cheap/free. I just filled a couple of normal 500 ml plastic water bottles with sand, wrapped a soft cloth around them, and I use an adjustable carrying strap that came with a laptop case to strap the weight to the bottom of the OTA. I've been meaning to develop something nicer, but haven't gotten around to it yet.

    The only problem I have with my current setup is that ideally the weight should be opposite the weight that it is counterbalancing, which would put it on the side of the OTA that goes into the base at zenith. With the sand-filled bottles in that position, I have trouble getting real close to zenith, unless I slip the weight around to the other side of the OTA for a little while. That problem has me looking for a solution that is thinner than what I am using (maybe a couple of heavy magnets with cloth or thin rubber on them to keep from scratching the OTA).
    Name: Sam
    Equipment:
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    12” Collapsible Dob w/Telrad, Explore Scientific 30mm 82*, and 20mm, 14mm, & 9mm 100* EPs, Tele Vue 4X Powermate & Paracorr T2, 2" Lumicon UHC and ND13 (
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ) Filters, 2" Astronomik OIII filter, dew heater system, and Nikon Action 7x50 EX Extreme ATB 6.4* binoculars & Celestron 15x70 binoculars.

    I'm enjoying learning the sky by star hopping; just charts, my binoculars, and my Dob!

  5. The Following User Says Thank You to samgray1 For This Useful Post:

    cmeg1 (07-06-2011)

 

 

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