Only recently I made progress in imaging the details of sunspots. This was achieved through :
- imaging with a monochrome camera
- imaging of the sun in the early morning to be ahead of turbulence
- use of seeing monitor from SharpCap and applying threshhold
- exposure time below 10ms
- format imaging SER 16 bit
- stacking limited to 5% best images
- editing using IMPPG software
So, what can we see of the photoshere with a 200mm telescope :
- limb darkening
- sunspots
- (micro)pores
- light bridges
- granulation
- faculae
- umbral dots and dark nucleus
- penumbral fibrils or filaments
- penumbral grains
- intergranular bright points
Using my image from april 23 with sunspot AR2993/94 I can identify many of the above mentioned solar features.