From: "Stephen W. Ramsden" <sramsden@natca.net>

Date: March 16, 2012 9:05:06 AM MDT

To: <Astro_IIDC@yahoogroups.com>

Subject: RE: [Astro_IIDC] Re: dynamic range

True enough Friedman.  I have never even come close to processing an image that looks anywhere near as good as the eyeball’s view in the eyepiece..

I’m sure you would agree with your own work as great as it always is…

http://solarchat.natca.net is now the highest activity solar astronomy forum on the net with over 5000 hits per day… come on over!  Its free!

From: Astro_IIDC@yahoogroups.com [mailto:Astro_IIDC@yahoogroups.com] On Behalf Of Alan Friedman
Sent: Friday, March 16, 2012 10:41 AM
To: Astro_IIDC@yahoogroups.com
Subject: [Astro_IIDC] Re: dynamic range

That's why direct observation is so exciting. Our eyes have no problem adapting to a huge span of dynamic range. With the camera, it takes some image processing to reveal the same thing.

cheers,

Alan

On Mar 16, 2012, at 10:33 AM, Stephen W. Ramsden wrote:

Depends on the camera Jim but I always get the surface and proms at the same time using a PGR Grasshopper, Scorpion or Flea.  I use a high gamma and vary the exposure rate..  Its easy with a 12 bit or higher camera, almost impossible with an 8 bit or lower..

From: Astro_IIDC@yahoogroups.com [mailto:Astro_IIDC@yahoogroups.com] On Behalf Of Jim Chung
Sent: Friday, March 16, 2012 10:01 AM
To: Astro_IIDC@yahoogroups.com
Subject: RE: [Astro_IIDC] Astro IIDC 4.08.00 Alpha 2 Available

Hi Milton,

Like Stephen, the local RASC club runs a solar party the first weekend
of each month as the Ontario Science Center. I looking forward to
trying the colorized view feature but is there any way to artificially
increase the dynamic range so that both prominences and surface
features are visible at the same time. You have to turn up the
exposure in order to see the prominences but then the surface becomes
overexposed.

regards,

Jim