Since it has been a long while since I last posted about the solar corona (https://www.cloudyni...om-mt-mitchell/) I decided to show some images I took last week even though the story has a slightly disappointing twist to it.
Keep it short, I went up on the Wendelstein Mountain here in Bavaria with my 2 inch coronagraph. Unfortunately the conditions were not as good as expected since there was quite a bit of moisture in the air.
Despite that I got some fairly decent 5303 A shots which I am posting below. However, I failed to detect the white light corona either visually or with the camera (to be expected considering the conditions) but also did not catch the K-corona with my polarizer set up, which is somewhat surprising. Either there something wrong with my setup or the K-corona is significantly harder to detect than 5303.
I did see some nice prominences in their natural colors though using only grey filter.
In any case, here are the pictures. And yes, I could have rotated the camera better to get the main corona loops into the frame better, but at this time it really was just going for the K-corona.
Dark specks are dust on the camera, bright streaks are insects in the air moving and the circle arc at the lower part is the internal reflection from the double stacked filter.
This is the most processed image: it is using a 30 frame .ser file with the standard sharpening added 50-50 in the final image and the levels adjusted accordingly.
Here is a close-up of the same image of the most interesting region.
This is what one original frame looks like.
And this is what that same frame looks like if you level adjust it.
Klaus
Edited by Klaus_160, 03 November 2024 - 06:13 AM.