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  1. #1
    Anil's Avatar
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    Default My new DOB design



    Hi all, i refurbished a old 6" telescope which was gathering dust at a school in Bangalore. Telescope mount is made of 19mm plywood. Base is attached with 3 wheels for smoother movement. Old paper mash tube was replaced with a 7" PVC tube. Here in this design mirror cell is modified with a 1400 grams counter weight to balance the scope. Helical focusser was machined to replace a cheap plastic one, finder scope was also developed with a aluminium ring, lot of work....took me one month to complete the scope. There is no conventional cradle here, this is replaced with a 1 inch thick circular wooden blank attached to the tube. Optical performance is quite good. Lot of running around to get things done but i really enjoyed this project. More working pictures here at MY DIY BLOG

    Anil


    Completed scope



    Modified cell with counterweight



    Machined aluminium helical focusser


    Viewfinder with cross hair attached



    New round base with wheels


    http://anilmn.blogspot.com/ [ MY DIY PAGE]

    4" CARTON Refractor @ f/13

    If god had intended us to use reflectors he would have aluminized the back of our eyeballs.

  2. The Following 4 Users Say Thank You to Anil For This Useful Post:

    admin (01-29-2010),AustinPSD (01-29-2010),dmbryan (01-29-2010),Kevin Z (01-29-2010)

  3. #2
    dmbryan's Avatar
    dmbryan is offline Super Moderator
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    Default

    Looks like a nice scope. thanks for the pics.
    name: Derek

    Various
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    and such.

  4. #3
    sxinias's Avatar
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    Default

    Congratulations on a job well done.
    SXINIAS

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    ZEQ25 mount;
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    SynScan AZ
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    Mount;

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    ST-80A 80mm Refractor (OTA); Meade
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    203mm SCT (OTA);
    Meade DS2090AT 90mm Refractor; Meade 2045LX3 102mm SCT;

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    4 SE 102mm MAK; Celestron Advanced Series C6S (XLT) 150mm SCT
    with an iOptron GOTO Drive

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  5. #4
    AustinPSD's Avatar
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    Default

    Nicely done!
    CGEM 800 HD, NexGuide,
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  6. #5
    WWPierre's Avatar
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    Default

    Outstanding, Anil! Thanks for sharing.
    Meade 16" LightBridge; Celestron G-8N Bird-Jones/motorized EQ5;
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    127 Mak/go-to EQ5; Burgess 127f8 refractor; Sky-Watcher 5" F/5 collapsible dob; 90mm Mak/motorized EQ2; Royal Astro 76/910-GEM; Meade 60x700 refractor/alt/az; Zhumell 25x100 Coin Ops; GalilleoScope. Celestron 8mm-24mm zoom; lots of fixed EPs,some good, some..not so much. A small collection of surveying instruments; a forest of tripods; Canon Rebel Xti. Confirmed gadget junkie; Custodian of the Magnetic North Pole (Send $1.00 to Pierre each time you use a compass.)
    49-41-37.03N 123-09-29.61W Calculated magnetic declination: 17° 39' East

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    We have been broadcasting our presence to the Universe for 100 years now. If there is a detachment of Galactic Pest Control within 100 light years, they are already on the way.

  7. #6
    Lenbo's Avatar
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    Default

    Well done Anil. Congratulations.
    Len
    Astro Tech 150mm mak f/12 -
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