I took a total of 27 individual recordings, and stacked the best 300 of each into one picture. ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod
enhanced and false color
The Sun in Hα – 2021-07-29
ASI 178MM (cooled), B600, Lunt LS60T Ha, mountpusher, EQ3-mod
The Sun in Hα / 2021-07-28
ASI 178MM (cooled), B600, Lunt LS60T Ha, mountpusher, EQ3-mod, 3x4minutes, 300 frames from each sub.
The Sun, Calcium K, 2021-07-25
This time, a rather aggressive processing, maybe for the better, who knows.
ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod.
The Sun in K 2021-07-24
This optical tube is a marvel, at least with the Calcium K filter. Although there are some stacking-aligning issues left on the picture above, it is still the best I have ever made.
Instruments: ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod
2021-07-22, K-line Sun, first light
This is the first light of the APO tube I just bought, and put into the lunchbreak-heliobservatory: ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod
I really like the design of the tube, how short it is, though its focal length needs either an expansion tube or the flattener, which I figured wouldn’t be a good fit for the Sun.
The tiny additions I put onto the tube: the focuser and the cardboard adapter for the ND3.8 filter I already have for the MC102/1300.
It was a really nice surprise to see the Sun in much more detail, than through the Canon EF 200mm f2.8L II USM
Sun, K-line 2021-07-12
ASI 120MM, Baader K-Line Filter 1.25″ (double stacked), Canon EF 200mm f/2.8 L II USM, mountpusher, EQ3-mod
Sun 2021-07-15
ASI 178MM, a 0.5x reducer, 1.25″, B600, Lunt LS60T Ha, mountpusher, EQ3-mod. The sky was visibly full of a lot of Saharan dust, having a distinct yellow hue, dust which got deposited onto the windows with the rain and thunderstorm later that day.
The color version is obviously false color, intensity coded – red for fainter details, yellow for brighter ones. Below I posted a selfi, and see also the werk photos from the earlier post.
Sun 2021-07-11, Calcium K line
ASI 120MM, Baader K-Line Filter 1.25″ (double stacked), Canon EF 200mm f/2.8 L II USM, mountpusher, EQ3-mod
The Sun – 2021-07-01
The Sun kept playing hide and seek, and a rain interrupted the session, but I managed, in the lunch break, to get a fair look at the Sun. ASI 178MM (cooled), B600, Lunt LS60T Ha, mountpusher, EQ3-mod, Kolozsvár
