Finally, the clouds broke over the ersatz-obsi, and the Sun is showing some awesome activity. The image was taken, as usual, through the Calcium filter, which I found yields the best images, hydrogen alpha aside, of the surface of the Sun, running circles around the solar continuum, as long as a full disk image is the goal.
ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod, with the automated filterwheel.
Using a setup I no longer have, an Atik camera, I made a mosaic of the Sun with the N150/750 tube, through the Baader K-Line Filter 1.25″ (double stacked) filter. I processed it back then, and reprocessed it now. It shows the difference.
Calcium K (2015)
Calcium K 2015, reprocessed in 2021
ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod
ASI 178MM (cooled), 0.5x, B600, Lunt LS60T Ha, mountpusher, EQ3-mod
ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod
ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod
EQ3-mod, MC102/1300, IR pass 650, automated filter wheel, ASI 178MM (cooled), ersatz-obsi, mountpusher
IRpass 850
EQ3-mod, MC102/1300, TSO ADC, automated filter wheel, ASI 462MC (cooled), ersatz-obsi, mountpusher
EQ3-mod, MC102/1300, TSO ADC, automated filter wheel, ASI 462MC (cooled), ersatz-obsi, mountpusher
900 frames out of ~3200 frames. 2021-11-25, 17:05Z, two minutes.
ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod,18x3minutes, the best 300 frames from each sub, stacked.
