I checked the collimation with the laser on my f8 6 in dob and it was slightly out.
Fixed that and got really sharp moon views.
Then swing over to Jupiter, it seemed to be out of round. Images confirmed it.
I haven't seen that before.
Did a web search to no avail.
What is this indicative of please ?
Pete in NZ
As noted, Jupiter does have a noticeable equatorial bulge. It's dark equatorial belts can "enhance" the planet's apparent bulge in an illusory effect. The fashion adage regarding horizontal and vertical stripes is another example of that illusion (i.e. "horizontal stripes make you look fatter; vertical stripes make you look slimmer").
How "out of round" was Jupiter to your eye? Along what axis was the "out of roundness?" Did you try Saturn?
Here's hoping you simply had a better-than-average view of Jupiter's "natural" profile under excellent conditions in a well-collimated scope.
Edited by MisterDan, 19 September 2021 - 02:25 PM.