Re: ATM Building a spectrohelioscope

[Dwight Elvey <elvey@hal.com>]

"Sylvain Rondi" <Rondi@wanadoo.fr> wrote:
> 
> Hello everybody,
> 
> First, as a new user of this list,  let me introduce myself: I'm a french
> student at an engineering school, and an active builder of telescopes
> (several Newtons, 2 Schmidt cameras, ...).
> I plan to build a spectrohelioscope using a grating (similar to the one
> described in Amateur Telescope Making Book One Part IX), but I'd like to
> build a transportable one (not in a building like in the book). I'd like to
> know if somebody has built such a spectrohelioscope and where I could find
> informations on this subject (article, web page, ...).
> Thank you,
> 
>       Sylvain Rondi.

Hi Sylvain
 There was one person that had one at RTMC. I think he
was from Livermore, California. He had it in a long box
that was about 12 feet long. It resolved the H Alpha
line well enough to see a lot of interesting detail,
once one of the other amateurs helped him align it
a little. You can probably get in touch with him through
Riveside Astronomical Society:
   http://www.pe.net/~wpl/ras.html
Even though, it was sensitive to people walking around, 
it was stable enough for good viewing.
Dwight