I changed the spiral scan to linear. Horizontal deflection 15625 Hz, vertical deflection 50 Hz. For such a small monoscope, I am satisfied with the resolution obtained. It could be better if I used a larger target and a smaller diaphragm in the Wehnelt cylinder.
Unfortunatelly, I ca't add image because I have message:
"You don't have permission to access /newattachment.php on this server."
