The calculate the number of pixels which correspondents with 1,5A I used following formula :
H-alpha = -24* 2,4/pixelsize camera or for my camera = -24*2.4/2.9 = -19,86 pixels counting from the central H-alpha line equals 1,5A
CaK/H = -19*2,4/ pixelsize camera or for my camera = -19*2.4/2.9=-15.72 pixels counting from the central CaK or CaH line equals 1,5A
Images show the lower photosphere; the central line is showing the chromospehere.
Inti was used to generate the images and editing was done using CS4.
