Gso Dob in process

[Adrian-H]

guess this is a good place to go on about what to do with my dob and what i am doing with my dob, i just recently filled in alot of light gaps added telrad to it and allso added better frabric then the orginal teflon, sometime last year i added a wheel barrel thingy.
ill have to go to the hardware store to add alittle more updates ;)

i will take a more recent photo once ive finished with what im doing with the mount i sure do love crafts, heres a photo from sometime last year though.

[Photon]

Hi Adrian, Interesting, keep us posted. I always like to see useful mods. I'm intrigued by the 'light gaps' can you expand on this? I imagined that compared to a Truss Dob any GS Dob light leaks would be negligible?
Regards IanG

[Orion]

Nice wheel barrow handles, well done.

[ving]

be good if the handles were at such a height that you dint have to bend down to pick em up... it would be more back saving and you could keep your back straight while wheeling and you wouldnt have to lift so high to get said back straight :)
just some ideas, keep up the good work :)

[Adrian-H]

sometimes when you take off the small cap off the cover and look inside the newt you can see stray light hiting the walls from the gaps and holes in the focus area geting rid of the light gap can be a slight improvement but ya it can be ignored, but all the more sight impovements you have can add up to a big impovement.

im doing a make over on the mount gonna do something equatorial to it then redo the wheel barrel system, yeah making the handles higher would be nice ill probly do that too, will be done soon well soon can take time sometimes, but all in good time of course, after i do the paintjob ill take a photo, cant having it look all uncolored

thanks for the complements. ideas are allways great you can use them or use them to think of your own. then share them, so more can think up ideas.

[netwolf]

Adrian, Can you expand on "something equatorial"?
Do you mean so you can track equatorialy or an equatorial platform?

Regards
Netwolf

[Adrian-H]

so i can use the scope equatorially an equatorial design, that is really what i want for this scope, and seems like it costs alot to buy one infact it makes me cry that it costs allmost as much and more then a telescope optics for a good EQ-mount, id rather use the money on geting another scope, or optics equipment cause basicly that is the most important thing in astronomy, the actual telescope optics. so i i would rather make an equatorial mount myself.

Went to bunnings today got myself some more equipment, im gonna have to take afew more trips though, times like these makes you glad you grew up with a mechano set, cause hell you can just replace that set with tools wood nuts and bolts when you get older.

[Adrian-H]

this is the wedge, still more to go.

[netwolf]

Hi Adrian,

I am guessing you want something like this..
http://www.livingstonetelescopes.co.uk/K%20PAGE-2%20COM.htm

I know Mike Pinner and Dave were working on a Wedge mod for the dob buggy . That seems like a cheap way to go.

Regards.

[Adrian-H]

simular, will see in afew weeks, yoke/horsehoe hybrid are my design specs

[Adrian-H]

heres a little update, so you can see whats actually going on, hehe, it will be larger when i am done i plan on geting more equipment tommorow to build more, reinforcements are good, if only i had some more powertools, hmm then again a workshop would be good too.

oh excuse the mess, i have been working alittle over compulsive latey >.<

[Roger Davis]

Done similar to this before. You may find the PVC piping inadequate. I redid the yoke by multilaminating 4 layers of 16mm ply and fibreglassing it. Flexure was reduced to 0.25mm.

[acropolite]

It may be worth it to try injecting foam in to the PVC pipe. I suspect that would add a fair amount of stiffness.

[Merlin66]

A similar concept using 2" galv pipe and screwed fittings would probably be an alternative.

[ving]

eh? i can see how its gunna work.... keep the pics coming :)

[Adrian-H]

i plan to fill the inside ya, im adding the bearings to the dob now, got to find something nice.

[Roger Davis]

Tried the foam, didn't work wonderfully well, may as well have filled it with concrete!

[Adrian-H]

im thinking about puting a wood frame inside then filling it

[Astroman]

Hey I am in the process of designing amount similar to this, but I am using 150x50RHS with a bit of 50x50 welded to the edge of it for stiffness. Going to hold my 8" scope in the obs. Was designing it for the 16" but changed my mind. looks good so far.

[Merlin66]

Do a test first.
Support the ends on a milk crate or similar and hange a load equal to 1/2 the weight of the proposed scope on each side positioned at the dec attachment points and measure the bending! This can be done with a block of wood and a bit of plasticine, you may be surprised!!!!

[Adrian-H]

that motorised dob is pretty hot, these are some pappers i been drawing up stuff.