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Thread: Anyone out there with a Dob observatory

  1. #11
    Nimitz's Avatar
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    Default re: Anyone out there with a Dob observatory



    Yeah like building a house again
    Intercepting & temporarily inconveniencing light photons as they travel through the universe since 1989
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    Default re: Anyone out there with a Dob observatory

    Quote Originally Posted by Nimitz View Post
    Very nice! That is a very cool idea for the roll off shed .... I was thinking more about building a small 10x10 building and then mounting an Exploradome on it .. But depending on the actual location this design could come in very handy ....
    For a Dob, I really wouldn't recommend this! An Exploradome on a 48" high wall puts the sill height of the opening up around 6'. My pier is about 48" above the floor, and I had to add an 8" extension for my EQ-mounted Newt to see anywhere close to the horizon. With a Dob's alt axis fairly low (waist height or thereabouts?), you'd never see anything except close to the zenith.

    The roll-off ideas will work much better.

    +1 on having lots of electricity. I, too, ran 220V to the observatory, with lots of outlets. 220V allows you to have electronics and motors on separate circuits that are well-isolated.
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    pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome;
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  3. #13
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    Default re: Anyone out there with a Dob observatory

    yeah, first first order of business after determining the location will be to survey how much of the sky I'll be able to see & then go from there ...
    Intercepting & temporarily inconveniencing light photons as they travel through the universe since 1989
    What do I have? A M.S. degree in AstroPhysics w/minor in planetary geology
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    UO 4mm Ortho, KK 9mm & 12.5MM Orthos, Delite 7mm, Delos 10mm, 14mm, Panoptic 19mm, 24mm, Baader 8-24mm Mark IV Zoom, Nikon D5300 & a bunch of NV stuff

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    Default Re: Anyone out there with a Dob observatory

    No doubt you will leave a gap between the foundation block for the scope and whatever floor materials you use, to isolate vibrations. May I suggest that you make a section of the floor right around the fountation block removeable? You just know that, if you drop a little set screw or washer, it is going to go down the gap. A removable panel makes it possible to search for dropped items.

    Don't ask me what reminded me of this! But all is well, since I have a removeable panel.
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    pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome;
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  5. #15
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    Default Re: Anyone out there with a Dob observatory

    yeah, good suggestion!
    Intercepting & temporarily inconveniencing light photons as they travel through the universe since 1989
    What do I have? A M.S. degree in AstroPhysics w/minor in planetary geology
    XX14g SkyQuest GOTO Dob; WO 81GT APO triplet; SkyWatcher EQ-6R Pro
    UO 4mm Ortho, KK 9mm & 12.5MM Orthos, Delite 7mm, Delos 10mm, 14mm, Panoptic 19mm, 24mm, Baader 8-24mm Mark IV Zoom, Nikon D5300 & a bunch of NV stuff

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    Default Re: Anyone out there with a Dob observatory

    Hi Nimitz
    when and if I put a support under the floor for my scope to sit on ,I may drop the scope in a recessed area even with the bottom of the floor joist, The scope would sit about six inches below the top of the floor it would help to lower the eye piece
    for them higher targets. My 16” has a eye piece height of 73” from the floor to the eye piece at it’s highest point
    so lowering the entire scope will make the higher targets easier to observe. I have a chair I designed and It will
    put me up at the 73” height with out any problems so for now I use that.

    Here is a pic of my chair. It slides up and Dow and the foot rest is also adjustable.

    Rob
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  7. #17
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    Default Re: Anyone out there with a Dob observatory

    Very nice. what does that look like with the foot rests extended?extended? My focuser is at 6' at the zenith so I'll probably look to do something similar as I'd prefer not to need a step stool for me ...
    Intercepting & temporarily inconveniencing light photons as they travel through the universe since 1989
    What do I have? A M.S. degree in AstroPhysics w/minor in planetary geology
    XX14g SkyQuest GOTO Dob; WO 81GT APO triplet; SkyWatcher EQ-6R Pro
    UO 4mm Ortho, KK 9mm & 12.5MM Orthos, Delite 7mm, Delos 10mm, 14mm, Panoptic 19mm, 24mm, Baader 8-24mm Mark IV Zoom, Nikon D5300 & a bunch of NV stuff

  8. #18
    rseasy1's Avatar
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    Default Re: Anyone out there with a Dob observatory

    Quote Originally Posted by Nimitz View Post
    Very nice. what does that look like with the foot rests extended?extended? My focuser is at 6' at the zenith so I'll probably look to do something similar as I'd prefer not to need a step stool for me ...
    There are more pics of it on my profile, It works very well.
    Rob
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  9. #19
    rseasy1's Avatar
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    Default Re: Anyone out there with a Dob observatory

    Hi Nimitz
    I see your located in Florida , what section If I can ask? We might be visiting Sanibel Island sometime
    Im really looking forward to that.
    Rob
    Too many hobbies ,Some for day time some for night.

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    Default Re: Anyone out there with a Dob observatory

    Hi Nimitz, I'm working on an obsy design right now. I'm looking at 10x14 or 12x14 roll off roof with a pier for a future AP newt setup and an isolated platform for my 12" manual dob with setting circles. It will probably have a drop down south wall section since my southern viewing is everything 2 degrees above the horizon. Still working on the overall design and roof rolling mechanism.

    Good luck and share what you decide/design.
    Roger
    Scopes: Z12 F4.9 dob, Orion XT10g F4.7 dob, Tasco #7TE-5 60mm F16.7 w/Royal Astro lens on equatorial mount
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