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Thread: Beginner with Ioptron Polar Scope App

  1. #1
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    Default Beginner with Ioptron Polar Scope App



    I purchased the Ioptron Polar Scope App from Itunes. In Itunes, there are three different screen shots showing. I only seem to be able to get the first screen shot that is shown. Is this normal? Are the others important?
    And now my really dumb question, how do I use the information I see on the screenshot I get? I can see the little green dot that I assume represents Polaris’ position, but what do I do with it?
    Thanks for all your help.
    Michael

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    Default Re: Beginner with Ioptron Polar Scope App

    When looking through your polar scope adjust your mounts alt and az bolts to place Polaris where the green dot is.

    That is once your polar scope is aligned with your mounts axis.

    Also your mount will have to be fairly close to being aligned before starting eg pointing north.

    http://stevebb.com/polar-alignment-tutorial.html
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    Default Re: Beginner with Ioptron Polar Scope App

    Quote Originally Posted by UlteriorModem View Post
    When looking through your polar scope adjust your mounts alt and az bolts to place Polaris where the green dot is.

    That is once your polar scope is aligned with your mounts axis.

    Also your mount will have to be fairly close to being aligned before starting eg pointing north.

    Polar Alignment Tutorial - Steves Place
    Thanks, UM. I think I have a reasonable idea now. Am I correct that azimuth and radius are the same or at least related?
    Michael
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    Default Re: Beginner with Ioptron Polar Scope App

    Radius refers to how far from the north celestial pole Polaris is. Currently it should be about 38.5 arc minutes away.
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    Default Re: Beginner with Ioptron Polar Scope App

    Quote Originally Posted by Ken Warren View Post
    Radius refers to how far from the north celestial pole Polaris is. Currently it should be about 38.5 arc minutes away.
    Thank you, Ken. Does Radius refer to azimuth at all?
    Michael
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    Default Re: Beginner with Ioptron Polar Scope App

    Quote Originally Posted by mikalm View Post
    Thank you, Ken. Does Radius refer to azimuth at all?
    Michael
    No. the app tells you the hour angle (position of Polaris) and the distance of Polaris from the north celestial pole (radius). Then you use the altitude and azimuth adjustments on your mount to put Polaris in that position in the polar scope.

    About the three screenshots for the app in the App Store: the first is the one you're used to, showing the position of Polaris. The second is for Southern Hemisphere use, and shows the position of Sigma Octantis, a star not far from the south celestial pole (sometimes referred to as Polaris Australis). And the third is just a notification on the lock screen.
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    Default Re: Beginner with Ioptron Polar Scope App

    Radius and hour angle tell you where on the circle you should put Polaris. Azimuth is the left-right motion and altitide (a.k.a. elevation or latitude) is the up-down motion that you use to move Polaris to that spot.
    Brodavid1953 likes this.

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    Default Re: Beginner with Ioptron Polar Scope App

    Thank you, Ken and Kathy. Both your answers together really tell me what I needed to know.
    Michael

 

 

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