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long_arms

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long_arms last won the day on August 1 2013

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    http://flic.kr/ps/2o7bHL

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    Basingstoke

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  1. Ha I did google this out of interest, all those crushing/bending penny machines at tourist destinations springs to mind. Can't believe its enforced. However to remove any doubt, it was only paint. I have now cleaned the 20p clean and the Queen looks as good as ever! No tower for me just yet.
  2. Small splodge opposite the focuser of the 200p dobsonian. Pointed at a light source to attempt to illuminate it. The inside of the telescope seems very black until I illuminate it like this. Interestingly I can find an angle where the paint appears "lighter" than this. Its hard to get a photo of.
  3. I've seen mixed things about Black 2.0, apparently it had the usual tendency of getting slightly lighter as it dried. The video I posted shows comparison between Black 2.0 and Black 3.0 quite well I think. From this article: https://www.fastcompany.com/90300113/move-over-vantablack-you-can-now-buy-the-worlds-blackest-black-paint "His first version, Black 2.0, wasn’t quite as black as Vantablack, since it only absorbed 95% of the visible light (Vantablack absorbs about 99%). Now, Black 3.0 is out and available on Kickstarter for about $32 per 150ml tube. According to Semple, it is the blackest, mattest, flattest acrylic paint available on the planet, capturing up to 99% of all the visible spectrum radiation. The paint is based on a new pigment called Black Magick, whose exact composition they aren’t disclosing. Black 3.0 is made up of this pigment, combined with a custom acrylic polymer. Semple and his colleagues claim that the polymer “is special because it has more available bonds than any other acrylic polymer being used in paints,” allowing more pigment density. The paint is then finished with what they claim are new “nano-mattifiers,” which remove any shine from the paint. Unlike Vantablack, the resulting paint is soluble in water and nontoxic" Thankyou for your feedback on flaking! Before I paint the drawtube I will certainly check this out. ?
  4. This is a good shout, I have an IR742 Pass filter somewhere, I'll try and get a photo through that. The small amount of dried paint on paper, is now making everything I can find look positively gray!! I'll see how easily it flakes when its dried on the steel tube of the telescope.
  5. Tried to think of a fun quick test to document this afternoon, previous little tester on less metallic object is unbelievable to be honest. So, very shiny coin with grazing light and lit from above also. Whilst drying, as you can see its a thin single coat (not simply "filling" in the shape) Finally, even on a challenging shiny object with light shining on it, it makes it essentially 2D.
  6. Hello, It's been a long time since I've posted in this forum, anyway I've picked up a Skywatcher 200p F/6 dobsonian as a DIY project whilst I continue to work on a new telescope from scratch, (I've started to grind the mirror). I'll be making improvements to this dobsonian as a project and learning experience, I've already got a temperature controlled fan which has a probe that can measure both mirror and ambient temperature. I'll be measuring the primary mirror with my in progress Foucault/Ronchi/Bath Tester when that's finished in the next couple of weeks, may even refigure it depending on results. But I'm most excited about this right now. The blackest Black Paint as an alternative (hopefully better alternative) to flocking! This stuff is seriously black and flat, I backed it on kickstarter and received 3 bottles along with goodies. I plan on painting the area opposite the focuser, area around the primary mirror, inside the focuser drawtube, potentially the secondary mirror holder and edge of the secondary also. It's a shame I don't have any flocking to compare it with but it looks incredible. This video shows just how impressive it is (moreso than my little tester I've done). https://www.youtube.com/watch?v=uJIIzcbRD9w I'll try and get some decent before and after pics. Dan
  7. Hi, I saw in the asi174 thread you were using it for ISS imaging. I'm considering buying one to do the same thing, but I'm torn between the 174 and the 178. Do you think the global shutter on the 174 makes a big difference?

  8. Just ordered the brand new ZWO ASI174MM!

  9. ASI120MC-S arrived! Now just need to choose a USB 3.0 laptop before the next lot of ISS passes....

    1. HIP3802

      HIP3802

      Before choosing a laptop make sure the camera can take USB 3. I had to return an ASI 120 earlier in the year as it was not compatible (at all!!!) with USB3.

      HTH.

      Martin

  10. Any 500px users on here?

    1. tingting44

      tingting44

      not that i know of :(

    2. long_arms

      long_arms

      Fair enough. Just joined and there are some incredible images on there. Was looking for some astronomy peeps to follow :-)

  11. Got the ring nebula on the little ASI120MM sensor. Subs look good!

  12. Just had a look at Saturn. Lovely, not too bright though. Seeing was awful but couldn't resist!

    1. Bilvers

      Bilvers

      Me too - great sight

  13. Whyyy does Eqmod stop working whenever my ASI120MM is plugged in. Tried every variation including powered hub. Losing the will!

  14. Eqmod loses connection to mount everytime I open firecapture! Both work fine all night independently.

  15. Very Bright Supernova discovered in M82! Aaaaand...its cloudy. Typical.

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