saturn, so close to a hex

if you look at the top of the planet, you get a hint of an angular structure at the north pole, rather than a circle,
but i'm pretty sure it's artifact, not the polar hexagon which is smaller :(

Saturn 7/4/2017 7:45 UT

image details:
Meade LX850 12" f/8
televue 2x Barlow
FocalLength~4100mm
Resolution~0.19"

ASI120MM-S mono camera
ZWO RGB filters, Baader IR pass "685" nm
2 minute captures for each filter R G B
captures with firecapture @ ~22-55 fps
exposure 15-45ms ms per frame
stacked in autostakkert, combined in WinJupos, sharpened in registax 6

7/4/2017
Eastbluff, CA