G'day lads and ladettes
Not sure if this is the right place to be asking this?
But further to my recent posts about the drama I had with my primary.
I noticed last night, during an hour or two of relatively clear skies, that the diffraction spikes when looking at Venus and Sirius seemed particularly long.
I was using a 6mm Vixen LV eyepiece at the time, and switched it with a 6mm Skywatcher SW6 EP. Same result.
The spikes extended all the way out to the edge of the FOV. Is this normal, or could it be an aberration created by my recent probs with wiping the primary clean of faint bathroom silicon smears???? Could there still be residual material on the mirror surface exaggerating the spikes?
I'm thinking maybe it's normal, given the small FOV created by a 6mm eyepiece in my 8" f5???? But as always your opinions very welcome
cheers