From: Alan Friedman <alan@greatarrow.com>

Date: October 1, 2010 9:59:47 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Sunspot #1109

Hi Milton,

Sorry for this late reply... my message went to the Twilight Zone for a few days it appears.

On Oct 1, 2010, at 11:39 AM, Milton Aupperle wrote:

Hi Alan;

If the alignment object changes shape all the time, there isn't much one can do to try and align on it. It's basically "best fit".

Certainly true. For most objects, when I encounter this type of seeing, I will opt to watch a movie with my family or catch up on some sleep. But when imaging the sun, I always try to set a 0 gain (brightness) setting. This makes the individualy frames in the movie quite good from a S/N perspective and allows me to construct a decent image with a single or small handful of sharp frames. The result won't substitute for good seeing, but it's better than packing up, especially if there is a photogenic region on the sun that day.

best,

Alan