Calcium H line

di Alessandro Bianconi inserita il 30 Agosto 2020

Calcium H line

Sun in Calcium-H Line 2020.08.28
Solar Refractor 228 F8 (180mm F40)
Ioptron Cem120 mount
Daystar Calcium H-line
Blu filter
ASI174MM
TeleVue Barlow 4X (7300 mm focal length)