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johninderby

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Posts posted by johninderby


  1. TS-Optics Concenter 1.25" Collimation Eyepiece for Newtonian Telescopes

    In as new condition. Bought from Telescope Express. Am upgrading to a Concenter Visus. A Concenter is simply the best thing for setting up your secondary mirror.

    SOLD - £49.00 Posted to UK

    https://www.teleskop-express.de/shop/product_info.php/info/p5507_TS-Optics-Concenter-1-25--Collimation-Eyepiece-for-Newtonian-Telescopes.html

    ♦ Fits into the 1.25" receptacle of the focuser

    ♦ With high-quality protective container

    ♦ You see immediately, whether the telescope is perfectly collimated or not.

    ♦ The adjustment is made via the edge of the mirror and not via a center mark, this is much more precise.

    ♦ The offset is also taken into account.

     

    Payment:  PayPal (buyer pays fees)

             John

    F4DC889E-2B05-4C22-859A-0C02C6599C4E.jpeg

    082C201D-11EB-4DBC-BF09-CE698B10417E.jpeg

    B790487F-6844-40B4-B5A9-3FD9090D1CF0.jpeg


  2. Re: Bresser availability.

    A few weeks ago I asked Bresser aboit availability of stock and received this reply.

    “The latest information from the factory is that we will get a new delivery around November to December.But there are still some problems with international supply chains because of the Corona crisis. Therefore, unexpected delays can unfortunately still occur.

    Freundliche Grüße · Kind regards 

    Your Bresser service team

    Checked Telescope Express and they are saying mid November now.


  3. Bit of a problem.

     

    News from NASA

    Ai Nasa probe sent to collect rock from an asteroid several hundred million kilometres from Earth has grabbed so much that samples are spilling out. 

    Officials behind the Osiris-Rex probe, which landed on Bennu earlier this week, say the collection operation may have performed too well. Pictures beamed back to Earth show a rock has wedged open the door of a container and a fraction of the sample is leaking, Nasa says.

    "A substantial fraction of the required collected mass is seen escaping," head of mission Dante Lauretta said.

    "Time is of the essence," Thomas Zurbuchen, Nasa's associate administrator for science, told reporters as the space agency focuses on making sure no more is lost. 


  4. The Hotech is a great laser collimator. Been using one for years. Love the crosshair which is much better than a simple dot.  Comes properly collimated itself which is often a problem with cheaper lasers.

    https://www.firstlightoptics.com/hotech-collimation-tools/hotech-sca-laser-collimator-with-cross-hair.html

    I also use a TS Concenter for setting up the secondary mirror. No other bit of kit does the job as well.

    https://www.teleskop-express.de/shop/product_info.php/language/en/info/p5506_TS-Optics-Concenter-2--Collimation-Eyepiece-for-Newtonian-Telescopes.html

    The two make a great combination.

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