ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, Baader Astrosolar ND3.8 Film, mountpusher, EQ3-mod
The Sun on 2023-01-04, in CaK and Hα
EQ3-mod, mountpusher, Sharpstar 60/330 ED-APO, Lunt CaK B600 LS6CAKMDS2, ASI 178MM (cooled)
EQ3-mod, mountpusher, Lunt LS60T Ha B600, ASI 178MM (cooled)
A black Sun on 2023-01-06, in CaK
In order to obtain my hallmark blue-violet-ish Sun, with the active regions as white, I obtain the brighter-than-average information, long story short, this picture below. While this is usually nothing more than the saturation layer negative I use, now I publish it, cause why not, it looks awesome. Actually, I’ve seen quite many „black suns” that were negatives, curved in weird ways, especially for hydrogen alpha, a sloppy way to deal with the prominences that are much fainter than the bright limb. The Sun below is neither. It is >>the Sun<< in normal light, minus the boring part, which I also posted, for reference.
EQ3-mod, mountpusher, Sharpstar 60/330 ED-APO, Lunt CaK B600 LS6CAKMDS2, ASI 178MM (cooled)
The Sun and Moon on 2022-07-17
ASI 178MM (cooled), Lunt CaK B600 LS6CAKMDS2, Skywatcher 72/420 ED-APO, mountpusher, EQ3-mod
ASI 178MM (cooled), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod
The Sun on 2022-03-29 in CaK, reprocessed
ASI 178MM (cooled), Lunt CaK B600 LS6CAKMDS2, Skywatcher 72/420 ED-APO, mountpusher, EQ3-mod
The Sun on 2022-12-21
On the day of the winter solstice, which is calculated to have occurred at precisely 21:48Z, I imaged the Sun in three narrow bands:
Hα
CaK
SlC 7.5nm
EQ3-mod, mountpusher, Lunt LS60T Ha B600, ASI 178MM (cooled)
EQ3-mod, mountpusher, Sharpstar 60/330 ED-APO, Lunt CaK B600 LS6CAKMDS2, ASI 178MM (cooled)
EQ3-mod, mountpusher, Baader Astrosolar ND3.8 Film, TS-Optics 76/342 TS76EDPH, Baader Solar Continuum 7.5 nm 1.25″, ASI 178MM (cooled)
Although not used per se other than being in the light train for the S7C (solar continuum 7.5nm version) filter, it was a fun project so let me mention the automated filter wheel for credit.
The Sun on 2022-07-19 in CaK
Using the ASI 178MM (cooled), Lunt CaK B600 LS6CAKMDS2, Skywatcher 72/420 ED-APO, mountpusher, EQ3-mod setup, I imaged the Sun and obtained the following picture.
The Sun in CaK, on 2022-08-25
ASI 178MM (cooled), Lunt CaK B600 LS6CAKMDS2, Skywatcher 72/420 ED-APO, mountpusher, EQ3-mod
The Sun in CaK, on 2022-07-11
ASI 178MM (cooled), Lunt CaK B600 LS6CAKMDS2, Skywatcher 72/420 ED-APO, mountpusher, EQ3-mod
The Sun on 2022-12-13
EQ3-mod, mountpusher, Sharpstar 60/330 ED-APO, Lunt CaK B600 LS6CAKMDS2, ASI 178MM (cooled)
