April 26, 2020: Some Solar Snaps with Spots

[michael.h.f.wilkinson]

Lo and behold, a little AR is visible on the sun. Grabbed the APM 80 mm F/6, inserted Lunt wedge and started imaging in white light. First up, full disk images:

WL, grey scale:

WL, pseudo colour:

Then a detail shot with a 2.5x PowerMate inserted:

Not much to look at, but hey we have some activity.

Next, Ca-K full disk images:

Ca-K grey scale:

 

Ca-K, pseudo colour:

Ca-K part inverted:

Ca-K, part inverted + pseudo colour:

Some proms faintly visible, but not much to look at

 

[Johan L]

Very nice images. Great with some activity again. Cak imaging looks really interesting.  I have been tempted to buy a Cak Wedge my self. Is Cak imaging much more sensitive to seeing conditions compared to "white light" and Ha? (My seeing conditions are often pretty bad)

Johan

Edited April 26, 2020 by Johan L

[michael.h.f.wilkinson]

50 minutes ago, Johan L said:

Very nice images. Great with some activity again. Cak imaging looks really interesting.  I have been tempted to buy a Cak Wedge my self. Is Cak imaging much more sensitive to seeing conditions compared to "white light" and Ha? (My seeing conditions are often pretty bad)

Johan

Seeing is almost always worst in Ca-K, I find. Usually seeing is better in the morning, however. Note that I have a straight through Ca-K module, which is easier when imaging. 

[Pete Presland]

A most welcome A/R, although a remnant of the cycle 24. The seeing was pretty poor here as well.