From: Alan Friedman <alan@greatarrow.com>

Date: October 11, 2009 10:30:41 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] first light with PGR Scorpion

Hi Milton,

The image does use data from two different movies at different exposures. The surface exposure was 2.39ms/ gain 455, the prominences 33.33/ gain 572. The prominences were recorded in the surface exposure, but not well (or I haven't figured out the right way to liberate them yet...)

more time for experimentation and less clouds needed!

Alan

On Oct 12, 2009, at 12:16 AM, Milton Aupperle wrote:

Hi Alan;

So is that a movie in 16 bit mode?

Or is it a stack of two movies at different exposures?

I'm still wondering if you expose it properly, can you image the suns granulated disk and still capture the fainter limb prominences in one image / movie?

Thanks in advance..

Milton Aupperle

On 11-Oct-09, at 5:14 PM, Alan Friedman wrote:

Here is a zoomed view of the protuberance at the top of the blue fireball - the prominence detail is captured with the Scorpion camera worked with an 800x600 ROI! selection:

http://www.avertedimagination.com/images/proms20091010.jpg

best,

Alan