[alpal]

Originally Posted by ericwbenson

Hi Allan,
Using the shutter to select good/bad times of seeing/wind was discussed as far as back as 2006 and implemented by Steve Bell around 2009.
IIRC it doesn't really work very well (minor improvement sometimes) as compared to lucky imaging where the improvement can be substantial if the exposure is short enough (milliseconds). Of course the read noise at such short exposures is a real bummer and a 'zero cam' is required

If you have access to the SBIG yahoo groups archive here are some references:

https://groups.yahoo.com/neo/groups/...essages/141713

https://groups.yahoo.com/neo/groups/...essages/208793

https://groups.yahoo.com/neo/groups/...essages/207977

If you can't access them I could possibly copy/paste the text...if that's allowed?

Regards,
EB

Hi Eric,
I joined the Yahoo group & have read all those links.
They seem to think it would work but want a software solution -
which is fair enough.
It would be much easier than having to wire up a cable up & do it manually.

I have also contacted QHY for a circuit but have received only a component overlay & a small photo.
If I do this mod I want to open the camera only once & install it.
You can't just wire in your own circuit without knowing what's there
other wise you could back feed voltage into the camera shutter driver
IC - Integrated Circuit - & risk wrecking it.

I think I need to ask them to make a software upgrade as their
software does control the shutter.

Other comments on Yahoo -
" the idea is a poor man's AO7. "
That's true but also an AO7 can chase the seeing giving worse results
& you need a bright star to run an AO7 at 10hz - a lot of mucking around
& not always possible.

cheers
Allan