From: Goran Hosinsky 
To:  atm{at}shore.net
Reply-To: Goran Hosinsky 


You would run out of light for the camera(s). A good Halfa filter of 0.2
-0.5 ¸ngstr”m does not let much
of the solar light through. For solar images we use very narrow band
filters and normally several
scientific cameras at the same time in different wavelengths. In this way a
three dimensional image can be constructed as the light of different solar
lines is produced at different heights in the solar atmosphere. Goran
La Palma/ where the suns shines brightly if you are above the clouds

JERRY PALMER wrote:

> A recent article in Nature
> http://www.nature.com/nsu/030616/030616-11.html  got me thinking about
> solar telescope possibilities...
>
> Could ol' Sol up there be as interesting object as the moon? These new
> photos show three dimensional details with 'fiery cliffs 300 km high
> ...'  using a 1 meter scope on the canary islands:
>
> 'The new, higher resolution images allow researchers to see shifting
> peaks and valleys of superhot plasma gas that can be hundreds of
> kilometers high. "The Sun's surface is looking more complex than it
> ever has before," says Tom Berger of the Lockheed Martin Solar and
> Astrophysics Lab, Palo Alto, California, one of the scientists to take
> the images'
>
> A one meter scope is of modest proportions, as research instruments
> go... and since the object is so bright, might we consider a one meter
> [or more...] scope made from just two small elements of the mirror at
> either ends of a diameter... an interferometer type scope.
>
> Since the separation of the two mirrors gives a resolving power
> equivalent to a scope aperture equal to the separation, perhaps
> amateurs could construct such a scope, using high tech materials and
> perhaps a bit of servo controlled adaptive optics. Since the two [or
> more] apertures would be looking thru a small, say 1 or two inches,
> column of atmosphere, the seeing should be enhanced.
>
> Just a thought... has anyone heard of such an instrument being used on
> the sun? Could amateurs make an instrument of 100 inches effective
> aperture with, perhaps CCD at the image plane?
>
>
> Hmmmmm....
>
> Jerry
> Maui/ where the sun shines brightly...
>

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