From: astroc <astroc@free.fr>

Date: March 24, 2010 11:07:23 AM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Autoguiding on solar protuberances

Hi,

sorry for my english, I have difficulties to express me.

My need is really to track on solar preminences in order to track on many hours the solar and to make animations. Yes, the mount can track the sun but the sun goes out easily of the CCD after many minutes. On Windows, I could track on sunspots or prominences thanks to Astrosnap.

Is it more clear ?

Hi Olivier,

Why do you wish to track on the Solar Prominences? Your mount is presumably tracking the sun and you camera is taking many frames per second. It's just the same process as Lunar or Planetary imaging just different exposure settings it's not like deepsky imaging.

Ray

On 24 Mar 2010, at 16:21, astroc wrote:

Hello,

maybe my question is not clear. I have no problems using AstroIIDC, but I would want to know if it is possible to track on solar prominences in halpha ? The autoguide option don't seem to be able to guide correctly on prominces. It works well on Stars and sunspots, but it don't recognize and track correctly prominences on videos.

Olivier

Dear Olivier;

On 24-Mar-10, at 4:58 AM, astroc wrote:

Hello,

I use AstroIIDC with Vixen Sphinx and GPUSB Shoestring interface to autoguide. I would want if it is possible to use AstroIIDC to guide on protuberances ? The option Solar Tracking don't seem to be well suited for this application. Another possibility with AstroIIDC ?

Support requests are to be sent directly to our e-mail address at:

http://www.outcastsoft.com/ASCASTROIIDC.html#SUPPORT

We will need to see sample images of what your protuberances look like (grab a frame of your intended target), your CAP logs,  your guiding logs,  your telescope information and details on the mount  (i.e. model number, is it in Equatorial orientation or Alt Azimuth, is it properly polar aligned) etc. That information gets lost in Yahoo postings, so send it directly to us.

Thanks in advance..

Milton J. Aupperle

Thank you,

Olivier