April 29, 2023: Biggest solar haul in a while, part 2, WL and Ca-K

[michael.h.f.wilkinson]

Really lovely sunshine this morning.  These are the full disks I snapped with the APM 80mm F/6, Beloptik Tr--Band ERF, and ASI 178MM camera. For WL I used a Lunt Herschel wedge and Baader Solar Continuum filter (no UV/IR block needed with the ERF). For Ca-K I used my Lunt B1800s Ca-K module.

WL, grey scale:

Ca-K, grey scale:

Ca-K, pseudo colour:

Ca-K, part inverted:

Ca-K, part inverted + pseudo colour:

In each case I stacked 25% of 2,000 frames in AS!3, sharpened in ImPPG, and postprocessed in GIMP

[maw lod qan]

I'm always amazed with the amount of activity you don't see on the surface in WL!

Excellent images!

[Roy Challen]

Great set of images! I'm quite surprised that the main AR wasn't visible to my naked eye.

[David Smith]

Wow, busy morning. Great set as usual Michael.