From: Alan Friedman <alan@greatarrow.com>

Date: July 12, 2012 7:23:09 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Sun Spot Images

Hi Milton,

Considering you were working with 1/2 the aperture (at the same focal length), I think than turned out damn good. It's been a great week for solar activity and I'm glad you found some good seeing.

I had a steady morning yesterday and pushed the 10" mak to 7500mm. I found 70 decent frames in an hour of looking and shooting. Here is the result:

http://www.avertedimagination.com/img_pages/maelstrom.html

best wishes,

Alan

On Jul 12, 2012, at 7:37 PM, milton_aupperle wrote:

Hi Folks;

While I was re formatting, zero erasing, unbacking up all my partitions on the MBP17", I decide I would reprocess my July 9th Sun spot movies (45 gigs of video data):

Here is the best of them - using Alan Friedman's sun color schema:

http://groups.yahoo.com/group/Astro_IIDC/files/Solar/SunSpot_20120709_120210L_MJA.jpg

This was taken 3,850 mm focal length (2.5x Televue) with the MAK 127 mm Orion scope white light filter, a red Astrodon filter and the Grasshopper 2 camera cooled to 25°C (it's 43°C in the sun today - 33°C in the shade). Best 200 frames out of 6,200 captured - stacked and aligned with Astro IIDC - 16 MAP points.

Not as good as Alan's :

http://spaceweather.com/images2012/11jul12/archipelago.jpg?PHPSESSID=5njjknjnulprffm9omuengtac7

, but getting there :)

TTYL..

Milton Aupperle