Re: [APML] Cygnus mosaic (was Fish on the Platter)

["Steve Walters" <swalters@att.net>]

Duhh, of course. Collectively we have enough schmidt cameras. One of you
could do L (maybe Loke), Robert Reeves could capture the R image, George
could do G and Bill (do we have a Bill with a schmidt? Maybe Bob?) could
cover the B spectrum. Then we could have the Loke-Robert-George-Bill (LRGB)
imaging team.

I have too much time on my hands here......full moon always does this to
me.....

Steve...

swalters@att.net
http://astrophoto.home.att.net

----- Original Message -----
From: Steve Walters <swalters@att.net>
To: <astro-photo@seds.org>
Sent: Wednesday, September 05, 2001 7:08 PM
Subject: Re: [APML] Cygnus mosaic (was Fish on the Platter)


> Of course the solution to this is to have 3 schmidt cameras. Loke can tell
> us how practical that would be....
>
> Steve...
>
> swalters@att.net
> http://astrophoto.home.att.net
>
> ----- Original Message -----
> From: Steve Walters <swalters@att.net>
> To: <astro-photo@seds.org>
> Sent: Wednesday, September 05, 2001 6:58 PM
> Subject: Re: [APML] Cygnus mosaic (was Fish on the Platter)
>
>
> > Besides, what benefit would it give? You'd have to expose for 3 times as
> > long since the light is split 3 ways. Plus the prisms would be lossy
> further
> > increasing the light level. Better to do 3 shorter exposures
sequentially
> > than one long one.
> >
> > Steve...
> >
> > swalters@att.net
> > http://astrophoto.home.att.net
> >
> > ----- Original Message -----
> > From: Gene Horr <genehorr@texas.net>
> > To: <astro-photo@seds.org>
> > Sent: Wednesday, September 05, 2001 5:43 PM
> > Subject: Re: [APML] Cygnus mosaic (was Fish on the Platter)
> >
> >
> > > cherrio wrote:
> > >
> > > > Have you ever heard of anyone doing simultaneous tricolor images? Is
> it
> > > > possible? Someway?
> > > > Just a thought?!
> > > > With the great minds we have available someone should be able to
come
> up
> > > > with a way to do multiple pick offs into separate CCD through
filters
> > from
> > > > the same source.
> > > > Crazy??  Impossible!! Some challenge!!]
> > >
> > > Actually it is done all of the time <g>.  Just look at any high end
> video
> > > camera.  They use a prism and three chips.
> > >
> > > But for film this is a whole other ball of wax.  Prism size and
> backfocus
> > > demands would make it close to impossible for almost every amateur
> > instrument
> > > made (assuming you don't add a focal extender) and the image quality
> > > would be worse.  After all you have a prism in addition to the filter
in
> > > the light path.  Plus IIRC prisms become tougher to work with with
> > > "faster" light paths.
> > >
> > > A workable idea for CCD but IMO too much trouble for film unless you
> > > have a lot of money to throw at the problem.
> > >
> > > Gene Horr
> > > genehorr@texas.net
> > >
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