I bought a Double-Stack Solar Max 60(BF15). Looking at the sun through this telescope is completely different from looking at a single-stacked telescope. The field of vision is darker and prominences are harder to see, but the way that I can see the sun's chromosphere has improved remarkably and I can observe complex structures on the sun's surface in high contrast.Even with just the single filter, I can see patterns, but the darkness of the patterns is completely different. The longer I look, the more I can see the patterns on the sun's surface, so I hardly care about the existence of prominences. Really, no matter how much I look, I don't get tired of it. I'm highly satisfied with it. Thank you.
This review was written in the old system and had content requirements that are different than reviews written today.