Sunday, 12 April 2020

Ha Single Stack Double Stack Cormparison 11th April


With such a quiet sun at the moment it is always interesting to do a double stack (top) single stack (bottom) comparison.  Tuning was really difficult today because of continuous and variable haze plaguing observations.  However, for me, the double stack is the winner revealing the brighter points and filaments so much easier.  The double stack was taken with my Lunt50 etalon on the 60mm f6 scope, double stacked with the Daystar Quark, the single stack was taken with the Coronado SM90ii, in both cases the camera used was the FLIR GH3 U3 916M.