and there seems to be a weird tradeoff between them
dielectric seems sharpest and best contrast. no noticable scatter or anything. as sharp as straight-through focuser
however the prism has noticably lower
the red green and blue wavelengths definitely seem closer to each other at high magnification with the prism diagonal. instead of the mirror one.
but the downside is there seems to be a miniscule decrease in small details at high magnification like a very small blur. airy disks seem a little "swollen" and larger if that makes sense.
as well as glare/flares on bright objects ghost double images that "float all around" the view at low power like on venus. jupiter and the moon. its very odd. strange reflections. they do not happen with the dielectric mirror diagonal
On normal stars they look practically indistinguishable at low power to high power. theres too much light pollution for any "spike" to be visible with the prism diagonal. whether thats on venus jupiter or bright stars. I just dont see any spike at any power really.
On a far away porch streetlight there was a slight hint of a spike with the prism but nothing really noteworthy
Any thoughts? the prism is worth about 15$ if you were to buy it new.