I thought that I’d just summarise a few things and respond to a couple of the questions in the last few posts, but firstly, thanks for your words of appreciation.
I’ve been very fortunate indeed to encounter such rare, good seeing. The single AVI from 13th Jan appears to have recorded the peak of the good seeing; it has been all downhill since then…sigh…
The full aperture solar filter on the front of the OTA is made from Baader Astro Film and is the solar version, designed for astro photography only as it transmits far more light than is safe compared to the visual film.
On the DMK31 CCD I have a 1 ¼ inch Baader IR block filter. I was shooting at 1/2000 sec with Gain between 330 and 350 depending on the altitude of the Sun and the presence of thin, wispy clouds.
AviStack certainly appears to excel where the underlying data is made up of small details or cells, distributed across the whole frame. I didn’t attempt to use dozens of alignment points in Registax so I cannot make any comparisons here. I had to read the AviStack manual at least twice before I managed to get to grips with it. When I tweaked the various “control” variables to better match my data, the processing time was reduced from a couple of hours to less than 15 minutes on my PC! Read The Manual!
Typically, AviStack used between 1,000 and 3,000 reference points during its processing stages, hence the nice uniform results across the frame.
Cheers
Dennis
