[ATM] Portrait of a giant 42 inch Dobsonian telescope in Germany

[Dominic-Luc Webb]

The thickness of the F/4.5 primary is noteworthy, only 56 mm! It is
not clear from what I have seen thus far if this started flat and
was ground to F/4.5 or if the original glass was slumped to F/4.5.

Dr. Dominic is curious if Dr. Erhard Hänssgen is an astronomer?

Dominic


On Mon, 9 Jul 2007, Mitchell R wrote:

>
>
> -----Original Message-----
> From: atm-bounces at atmlist.net [mailto:atm-bounces at atmlist.net] On Behalf Of
> Robert Houdart
> Sent: Monday, July 09, 2007 6:53 AM
> To: atm at atmlist.net
> Subject: [ATM] Portrait of a giant 42 inch Dobsonian telescope in Germany
>
> Dan Bakken's 41.2 inch Hercules is no longer the largest portable
> amateur telescope in the world – in fact has not been since 2003!
>
> Some 5 years ago German amateur Erhard Hänssgen built a huge 42 inch
> (107 cm) dobsonian telescope. Unfortunately this scope has pretty much
> been ignored outside Germany for the simple reason that it's very hard
> to find any facts about or pictures of this telescope.
>
> Actually I did not know about this telescope until last month when I
> stumbled by chance on a few pictures of the giant. With some assistance
> from members of the German Astrotreff forum I managed to contact Erhard,
> and after some exchanges we agreed to create a web page about his giant
> telescope with the hard facts and figures and a lot of pictures.
>
> *** Easy as pie, here's a website.
>
> http://www.stathis-firstlight.de/atm/
>
> Scroll down to picture #7
>
> Hope that helps
>
> Mitch
>
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