registax help

Hello,

I would be very grateful if someone could help me with Registax. I used
Registax (v3) for a long time on planets images and never have much
problems. It seems to me that almost any settings to start with will end up
with properly aligned frames!
Howeevr, I recently bought a Coronado PST and try to image the sun surface
(with a Toucam Pro attached). The rough avi file is not very contratsed, but
it seems to me that there are enough visible details to make an alignment.
But whatever settings I choose (FFT and quality filter, alignment box size),
I just cannot get it to align the frame properly. I put together some screen
grabs of this and put them he
http://www.gogo.me.uk/registax_problem.html
so you can have a look at what I'm talking about.
Any advice would be more than welcome!

Many thanks

Philippe

gogo nous a donc écrit :

Hello,

I would be very grateful if someone could help me with Registax. I
used Registax (v3) for a long time on planets images and never have
much problems. It seems to me that almost any settings to start with
will end up with properly aligned frames!
Howeevr, I recently bought a Coronado PST and try to image the sun
surface (with a Toucam Pro attached). The rough avi file is not very
contratsed, but it seems to me that there are enough visible details
to make an alignment. But whatever settings I choose (FFT and quality
filter, alignment box size), I just cannot get it to align the frame
properly. I put together some screen grabs of this and put them he
http://www.gogo.me.uk/registax_problem.html
so you can have a look at what I'm talking about.
Any advice would be more than welcome!

It seems that there is a dark sunspot on the right of your picture. Did you
tried to set the alignment box over it ?
I would try a small box (128pix) on this spot if your frames are not too
different from one to another. For FFT filter, choose the greatest possible
value, as long as you have signal on the red curve.

--
Norbert. (no X for the answer)
======================================
knowing the universe - stellar and galaxies evolution
http://nrumiano.free.fr
images of the sky http://images.ciel.free.fr
======================================

"Norbert" wrote in message
...
gogo nous a donc écrit :

Hello,

I would be very grateful if someone could help me with Registax. I
used Registax (v3) for a long time on planets images and never have
much problems. It seems to me that almost any settings to start with
will end up with properly aligned frames!
Howeevr, I recently bought a Coronado PST and try to image the sun
surface (with a Toucam Pro attached). The rough avi file is not very
contratsed, but it seems to me that there are enough visible details
to make an alignment. But whatever settings I choose (FFT and quality
filter, alignment box size), I just cannot get it to align the frame
properly. I put together some screen grabs of this and put them he
http://www.gogo.me.uk/registax_problem.html
so you can have a look at what I'm talking about.
Any advice would be more than welcome!

It seems that there is a dark sunspot on the right of your picture. Did
you tried to set the alignment box over it ?
I would try a small box (128pix) on this spot if your frames are not too
different from one to another. For FFT filter, choose the greatest
possible value, as long as you have signal on the red curve.

--
Norbert. (no X for the answer)
======================================
knowing the universe - stellar and galaxies evolution
http://nrumiano.free.fr
images of the sky http://images.ciel.free.fr
======================================
Hi Norbert,
sorry, I should have said that this "sunspot" is unfortunately a big dust
speck on my toucam sensor (I really should clean that soon). So, the highest
contrast zone I can see on this is really the lighter patch I choose
before...

gogo nous a donc écrit :

Hi Norbert,
sorry, I should have said that this "sunspot" is unfortunately a big
dust speck on my toucam sensor (I really should clean that soon). So,
the highest contrast zone I can see on this is really the lighter
patch I choose before...

OK, a bit cleaning seems in fact necessary )
Have you tried to take a large area (512 pixels) on the edge of the sun,
with a 50/50 share between the sun surface and the sky ? That's usually not
the best option, but I haven't any other idea.
Otherwise, may be you could use Registax 2.

--
Norbert. (no X for the answer)
======================================
knowing the universe - stellar and galaxies evolution
http://nrumiano.free.fr
images of the sky http://images.ciel.free.fr
======================================

With a quality so poor it is no wonder that Registax won't work. In
fact, even if it did, the results would be poor anyway. The only
suggesiton I feel I can make is to chuck Registax and use Iris.

Andrea T.

wrote in message
oups.com...
With a quality so poor it is no wonder that Registax won't work. In
fact, even if it did, the results would be poor anyway. The only
suggesiton I feel I can make is to chuck Registax and use Iris.

Andrea T.


I'll have a look. Thanks

Philippe