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The 'Dobsonian'

  • Frank Ryan
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17 years 4 months ago #36912 by Frank Ryan
The 'Dobsonian' was created by Frank Ryan
With regard to the 'Dobson' or 'Dobsonian' telescope.
Can anyone enlighten me as to why I see this this
design constantly refered to as 'Radical' or ' Revolutionary'.
To me it's a DIY Newt.
Was John 'D' really the first person to knock one of these together?

My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers

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17 years 4 months ago #36915 by dave_lillis
Replied by dave_lillis on topic Re: The 'Dobsonian'
Before John D, nobody had thought of putting one of these scopes on a rocker box, hard to believe isnt it!, they were always expensive high end eq mounts, he popularised it and made big newtonians very affordable as the dob mount it just a few pieces of wood.
Maybe other before his did make them, but his is the name that stuck.

Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)

Carrying around my 20" obsession is going to kill me,
but what a way to go. :)
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  • Frank Ryan
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17 years 4 months ago #36924 by Frank Ryan
Replied by Frank Ryan on topic Re: The 'Dobsonian'
Ahh right so It wasn't really the scope...
it was the mount.
Yes!
it is really hard to believe that no one
'copped' on to it eariler.
It would make you think...
what else is there looking us in the face...waiting for an Eureka! moment.

My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers

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17 years 4 months ago #36930 by TrevorDurity
Replied by TrevorDurity on topic Re: The 'Dobsonian'
And even more amazingly he got no royalties for it.
Though the first guys to commercialize the design (I think I read it was Coulter Optics) did give him credit for the idea.

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17 years 4 months ago #36933 by jhoare
Replied by jhoare on topic Re: The 'Dobsonian'
John Dobson is on record as saying that he didn't want royalties, he wanted his fellow astronomers to be able to afford bigger apertures and those who couldn't afford to buy a traditional telescope setup to have a cheaper option.

John

Better that old people should die of talk than to have young people die in war.

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17 years 4 months ago #36934 by mjs
Replied by mjs on topic Re: The 'Dobsonian'

Ahh right so It wasn't really the scope...
it was the mount.


To be exact it is the telescope as well as the mount. The true Dobsonian telescope includes a relatively light-weight (compared to traditional Newtonians), self ground mirror with most of his original mirrors being made from salvaged ship porthole windows.
The whole design is a great example of "the simpler the better".
Many of us had the pleasure of meeting him in person at the WSP a couple of years back. What an inspiration he is.....

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