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Thread: safe haven for tiny formats

  1. #14811
    Peter De Smidt's Avatar
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    Re: safe haven for tiny formats

    Thanks, Randy, I hadn't heard about that one. Here's some more: https://astrobackyard.com/star-track...rophotography/
    May tomorrow be a better day.

  2. #14812

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    Re: safe haven for tiny formats

    My DIY wide field version is not high-tech enough. It only cancels out the diurnal motion of the earth for about 2 minutes. It's based on the mathematical sine of an angle in degrees is approximately equal to an angle in radians for small angles (< 10˚)


    Barn Door Tracker by tuco, on Flickr
    Last edited by tuco; 22-Sep-2020 at 13:08. Reason: Oops

  3. #14813
    Peter De Smidt's Avatar
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    Re: safe haven for tiny formats

    Great job, Tuco!
    May tomorrow be a better day.

  4. #14814
    Tin Can's Avatar
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    Re: safe haven for tiny formats

    Yes good job and thanks for telling us ‘The Hinge’ only works for 2 minutes!
    wear mask or NOT

    is ???

  5. #14815

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    Re: safe haven for tiny formats

    Quote Originally Posted by Peter De Smidt View Post
    Great job, Tuco!
    Quote Originally Posted by Tin Can View Post
    Yes good job and thanks for telling us ‘The Hinge’ only works for 2 minutes!
    Thanks. Also the wider the lens the better it works. The method of rotating the barn doors on the hinge limits the time.

  6. #14816
    Corran's Avatar
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    Re: safe haven for tiny formats

    Nice tuco! I've got to look closer at weight / focal length restrictions on the available products. I want to be able to use it with my Pentax 67 and a long lens so much heavier than the typical DSLR setup (or mirrorless now which are even lighter).
    Bryan | Blog | YouTube | Instagram | Portfolio
    All comments and thoughtful critique welcome

  7. #14817
    Peter De Smidt's Avatar
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    Re: safe haven for tiny formats

    I'd like to use Nikon 300 f/2.8.
    May tomorrow be a better day.

  8. #14818

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    Re: safe haven for tiny formats

    Quote Originally Posted by Corran View Post
    Nice tuco! I've got to look closer at weight / focal length restrictions on the available products. I want to be able to use it with my Pentax 67 and a long lens so much heavier than the typical DSLR setup (or mirrorless now which are even lighter).
    Thanks. Putting the folding hood on your Pentax 6x7 in lieu of the prism will help reduce the weight some.

    I was going to try my barn door tracker out on the Alvord Desert but somehow it was left behind. So I just did a 500-Rule shot. The tent light was on only for a fraction of the total exposure.


    Alvord Desert Stars by tuco, on Flickr

    Nikon Df, Zeiss 21/2.8

  9. #14819
    austin granger's Avatar
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    Re: safe haven for tiny formats

    Whoa, that's awesome Tuco. And Jeep should pay you. :-)

  10. #14820

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    Re: safe haven for tiny formats

    Quote Originally Posted by austin granger View Post
    Whoa, that's awesome Tuco. And Jeep should pay you. :-)
    Thanks. Yeah and REI.

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