Sun H-Alpha with active prominences September 29, 2025

 

On the North Eastern limb a free prominence and on the Mid Western limb a long prominence moving away to space... so very active prominences.
The image was processed using new JSolex 4.1.1

This CaIIH is a very sharp image taken with Solex by James R. and 2nd Gen Slit. 

Getting this sharp image is done with both:

- sharp edges

- camera sharpness

- collimator adjustment with focus on the dustlines; this seems working. 

H-alfa2cb

Setting:

TLAPO80/480 with ASI678MM and Solex by James R.

Herstel Wedge

Software: SharpCap 4, Inti 6, JSolex 4.1.1 and CS4

Tilt <0,2° and Sx/Sy 1,1

Seeing with SSM3 almost all day <1,5 arcs

Data submitted to ftp.obspm.fr SOLAP