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  1. #1
    whitenerj's Avatar
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    Default Star hopping with a Dob



    I've been trying to get used to star hopping with my XT8i but when looking at star charts and then going to the eyepiece, everything is flipped both vertically and horizontally. Is there anyway to correct for this image at the eyepiece or do I just have to learn how to star hop backwards?

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    I just bought a 6x30 "correct view" finder scope for my Dob. It makes just what yer talking about MUCH easier.

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    It's pretty much something that you have to live with. All astronomical telescopes do that. At least you have an even number of reflections, so the image is correct even if it is upside down. By that, I mean that, if you turned your head upside down, you would see things in the same orientation as they are in the sky. If you are using a sky chart, you just turn the page 180 degrees.

    Folks with an odd number of reflections (Cassegrains or refractors with a diagonal) see things with one axis inverted but not the other. They have to use charts that are printed in mirror image.

    There are prisms that will invert (un-invert, I guess) an image. However, your focuser won't have enough travel to accommodate the extra length.

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    Default

    Most good computer astronomy programs allow for you to flip charts either on the screen or when printing them out - Other than that, you need to develop some funky left brain rain brain connections
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    Default

    If star hopping naked eye stars a Telrad is a useful tool with the degree circles you can measure with. Without that you can just practice lol. I myself try to take a mental image of the stars i am trying to navigate and try to move the scope according to the way i see it in my head and try to recognize the star patterns best i can, sounds strange but it works for me. It should get easier.
    Brett

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