TheSkySearchers

Outstanding work, Greg! I love that color, and you really pulled out the contrast very well. Nice Job!

Actually, there's not much more one can do with those proms as shot. They weren't large enough for the small pixel size of the 120 to capture much detail. I think the only way to overcome that would be to put a barlow or Powermate in the light-train and process several shots as a mosaic. I've done that in the past with the 120 when proms seemed worth the effort... I'll attach an example below.

Thank you for joining everyone in this challenge. It gave us all a chance to discuss various methods and techniques. That mosaic was shot with a Powermate and ASI120MM stuck on the back of a Lunt 60.

Graeme1858 wrote: ↑Thu Sep 17, 2020 6:29 pm AP Processing Challenge No. 8 starts today and ends on the 15th October.

There is still time, folks.

Clear Skies & Stay Safe

Graeme1858 wrote: ↑Mon Sep 21, 2020 3:44 am Looks like the usual curves, levels, colour balance and saturate doesn't work with solar!

My CS2 doesn't seem to be able to work with two images at the same time either. I'll give it another go in Gimp.

Ok, here's my attempt using Gimp. After rereading all the posts in this thread and John's excellent Solar Processing article.
(app.php/article/basic-solar-processing)

With both tif files open I copied the surface section from the surface image after; select visible, feather, grow and invert selection. Then pasted into a new layer over the proms file image. I centered it with the move tool but I couldn't find a way to increase the size of the surface image with respect to the proms so you can still see the join!

Stretched the surface image to align the shade of the two. Then converted to RGB and merged down. Increased mid tone red and yellow. Couldn't get the colour to increase without it looking weird! I tried playing with the curves again to bring out the texture of the surface but it didn't have too much effect. Sharpened slightly. Increased saturation.





Solar-Heads are a tricky bunch.

Regards

Graeme

Graeme1858 wrote: ↑Fri Oct 02, 2020 9:48 pm Solar-Heads are a tricky bunch.

Yes, we are. That's a good effort, Graeme.

Here's a quick look at how to change the size of an image (- 0.5% in this case). While I use PS, I'll bet GIMP has similar controls. In this case, I want to shrink the prom image to fit the surface. You could enlarge the surface to meet the proms in a similar fashion. A picture is worth a thousand words... Left-click to enlarge.
I appreciate that you gave it a go... We'll make a solar-head out of you in no time.

Clear Skies & Stay Safe

Cheers John.

I'll have a look for that in Gimp.

Regards

Graeme

That's it for No 8!

Hat's off to the solar imagers, the data processing is not as easy as it looks!

Thanks for the data John.

Regards

Graeme

Thank You, Graeme for making this possible.

We all had fun, and I certainly appreciate everyone who "had a go" with the image. When everyone learns something... It's a good thing.

Clear Skies & Stay Safe Everyone.