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  1. #1
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    Question Focusing the Hyperion Zoom



    I was just out testing my new 8mm to 24mm Hyperion Zoom and I'm having a problem focusing it in my scope. The focusing ring is screwed in as far as it goes but I need it to go a little bit further! Is there anything I can do to sort this problem? My scope is collimated as I see the big donut, but when looking at Jupiter I couldn't get a really sharp view, feel I need another quarter turn. Any help would be appreciated.

    Thank you

    Carol Gentle
    5"Skywatcher Collapsible Dob
    Viewing from Edinburgh

  2. #2
    WWPierre's Avatar
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    Carol, you may need to leave the eyepiece sticking out of the focuser a bit.

    Also, while I think of it, a small dab of petroleum jelly on the focuser threads helps a lot with smoothness.
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  3. #3
    Carolgentle's Avatar
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    Hi Pierre,

    Thank you- I'll give it a try.

    Carol

  4. #4
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    Hi Pierre,

    Unfortunately that didn't work. I think the EP needs to be nearer the secondary mirror, does that mean I'll have to move the mirror closer to the eyepiece holder & re- collimate? Not keen to do that as I'm not very good at collimating!

    Thanks

    Carol

  5. #5
    WWPierre's Avatar
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    Uh, oh. No, the secondary needs to remain in the center of the main scope tube. so the distance cannot be shortened. I need to think about this.
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    Thanks Pierre. I am in no rush. Let me know what you come up with.

    Thanks

    Carol

  7. #7
    WWPierre's Avatar
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    My understanding is that the eyepiece holder bottoms out against the top of the threaded focuser tube before the eyepiece comes into focus, right?
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    49-41-37.03N 123-09-29.61W Calculated magnetic declination: 17° 39' East

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  8. #8
    WWPierre's Avatar
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    I am thinking that viewing Jupiter, you may have been trying to focus the unfocusable; Jupiter was blurry because of the atmosphere. We need to eliminate that possibility first. Can you focus on a distant object in daylight? or a star? Or a distant light, if cloudy. I think I may have a fix for you, but I don't wish to reveal it until I am convinced there is really a problem.
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    49-41-37.03N 123-09-29.61W Calculated magnetic declination: 17° 39' East

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  9. #9
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    That's right.

    Carol

  10. #10
    Carolgentle's Avatar
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    Ok Pierre, let me go and try again and get back to you.

    Thanks again

    Carol

 

 
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