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Found 2 results

  1. Hi again About 2 years ago i built a 4.5 inch ultralite fold out travel / hiking Dobsonian. weighing in at about 2.5 kilos with eyepieces, collimator and tools. Here is a link to a Thread about the 4.5 Dob - http://stargazerslounge.com/topic/237230-45-compact-travel-scope-for-hiking/?hl=compact This works well but i always felt i could get it lighter and more compact when packet down also me loving building scopes so much i will find any excuse to build another one. This time i have decided to go all metal. Mainly using Aluminium. i want to design the dob as minimal as possible. All i need to do now is design the mount. probably something very simple. here are some plans and some of the build so far. thanks for reading. Pete
  2. Good day to all who come by this post. I have a old 10 inch Dob that i made about 7/8 years ago that is rather knackered after so many nights observing. The scope was not very well made as it was my first attempt at building one. since then ive lern't so much, building about half a dozen scopes. Especially after building my 20" and reading David Kriege and Richard Berrys book The Dobsonian Telescope. Which i highly recommend. As you can see from the image attached the old scope was based on Obsession telescopes, Ultra compact design. the secondary cage was originally one ring with the spider protruding up like a pyramid. i decided to change this to a fully enclosed cage dew to stray light and wanting to mount dew controller and other things to it. Also another thing that ive not seen on any other scope is all the axes ran on bearings this worked really well but Teflon and formica is just as good if not better and i find its easier to get the scope balanced. I also used telescopic camera tripod poles for the poles this was sometimes a hinderance as i would have to re collimate a couple of times during the night. All in all the scope worked fairly well and ive had so many fantastic nights with it but its time to rebuild. I had some materials left over from the 20 inch Dob build and ive spent about £100 on new hardware and poles. I gave the mirrors a good clean the other day they are in good condition with no sign of ageing. The rebuild will be very similar to the 20" so it will be like a little brother to the 20" The build is imminent so will post update very soon Thanks for reading. Pete
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