August 13, 2022: Third day of WL and Ca-K disks

[michael.h.f.wilkinson]

The sun is showing some nice activity these last few days, and I have had time to image it as well. I love the way the two bands of ARs show up so clearly, in particular in Ca-K.

WL:

Ca-K, grey scale:

Ca-K, pseudo-colour:

Ca-K, part inverted:

Ca-K, part inverted + pseudo-colour:

 

H-alpha coming up shortly

[Steve Ward]

Great stuff sir.

The more I look at your Calcium images the more I think I might head in that direction instead of the Ha route ... 🙃

What set-up are you employing on the Calcium front ?

Edited August 13, 2022 by Steve Ward

[michael.h.f.wilkinson]

10 minutes ago, Steve Ward said:

Great stuff sir.

The more I look at your Calcium images the more I think I might head in that direction instead of the Ha route ... 🙃

What set-up are you employing on the Calcium front ?

I use my 80 mm F/6 triplet for most of my solar imaging. In this case I used a Beloptik Tri-Band ERF (no longer made, but also not essential for Ca-K), and a Lunt B1800s Ca-K module (18mm free aperture which is overkill, but also future proof, straight through rather than as diagonal), and an ASI178MM camera.