Sun 5-9-11

[Mac]

Stacking 8 frames should give you a signal to noise improvement factor of almost 3

The signal to noise ration for an image of the sun is so small, the reduction of noise is irrelevant,

Most noise is caused through the CCD heating up during the long exposures, were talking about 1/400 of a second, so the image noise from heat is almost zero,
yes you still have read noise, but again the ratio of s/n is not worth bothering about,

It might be worth looking at focus stacking software, where the software looks at the images and removed the bits that are in focus,
as the main problem when shooting the sun would be scintillation.

The results from this type of software might be pretty good.

If you think about it, although the sun is technically in focus, different parts are not, due to the atmosphere
if we can remove the bits that are in focus and stack them all we could end up with a perfect disk.

Just a thought

Mac.

[MarkS]

Carole,

That's a big difference - well worth the re-process!

Mark

[Fay]

Yes the second is a lot more defined

[Carole]

Thanks every-one.

focus stacking software

Will look into that Mac, I had not heard of it before.

Carole

[A.S.I.G.N_Baz]

Baz, you offering to put us up while we should you how?

There should be HEAPS of room downstairs in the warm room office of the new observatory so why the heck not hey? 

Baz.