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Thread: Getting into sky gazing!! Tips and suggestions needed!

  1. #1
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    Red face Getting into sky gazing!! Tips and suggestions needed!



    Hello everybody,
    I recently purchased the NexStar 130SLT (after doing a bit of search and weighing the $$ that I had!). I am happy with the scope as it was was to understand and the Goto was a boon for a newbie like me! Along with the scope's supplied 25mm and 9mm eyepieces, I bought a 2x barlow, a laser collimator, Neximage 5 camera, a T-ring with adapter and also made a Bahtinov mask! I got brilliant views (and images) of moon to start with, and was also able to see Uranus, Pleiades and M31! That's is where I am stuck. Need suggestions on imaging the M31 and pleiades with my DSLR (Nikon D3100). I am unable to prime focus as the focusser won't go inward as required. I tried using the 2x barlow (as I read somewhere as a potential solution but that didn't work too). That is a bummer as I can easily see these objects but can't image them. Please suggest. Also any other tips and suggestions to observe and image other DSO possible with my setup.
    Thank you all.
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    Default Re: Getting into sky gazing!! Tips and suggestions needed!

    Congratulations on your new scope! I used to have one myself and liked it a lot. Here is a link that gives a number of simple and inexpensive hardware changes that will enable you to achieve focus with your DSLR: How to correct Celestron Nexstar 130 slt focus for Astrophotography. Your 2x Barlow should work (especially if short in length) - try during the day on a distant object. If you are still unable to achieve focus, you may have to unscrew the Barlow lens and attach it to a T-adapter as shown in this link: Bob's Astrophotography Endeavors: Page 2 - DSLR Astrophotography.
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    Gene

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    Default Re: Getting into sky gazing!! Tips and suggestions needed!

    Thanks for the suggestion. will read the given link. BTW, I do not have a shorty 2x barlow. Just a regular one. Any suggestion on what other DSOs I can image with my scope and equipement and possible settings to achieve the same?

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    Default Re: Getting into sky gazing!! Tips and suggestions needed!

    With a 2x Barlow and your camera, this FOV calculator will give you an idea of what target would fit in your restricted (approx. 1 x .7 degrees) FOV: Field of View Calculator | BBC Sky at Night Magazine. Here are a couple of images I took with this scope: M45 - Astronomy Photos Pictures, M81 + M82 - Astronomy Photos Pictures. It is really easy to move the main mirror forward by swapping out the mirror support hardware (and it is reversible, so you wouldn't invalidate the warranty). The best solution would be to swap out the focuser. but that is significantly more difficult. I would try again with your Barlow but on a distant object during the day (much easier to focus). If you still can't focus you may have to unscrew the Barlow lens and screw it onto a T-adapter (assuming it is removable and the threads match).
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    Gene

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    Default Re: Getting into sky gazing!! Tips and suggestions needed!

    Quote Originally Posted by Zuhaib View Post
    I do not have a shorty 2x barlow. Just a regular one.
    Please ignore my comment about the physical length of the Barlow.
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    Gene

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    Default Re: Getting into sky gazing!! Tips and suggestions needed!

    Gene

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