When I was doing a bit of deep sky the other night with my 150 mm
A Jupiter with a few belts and a pronounced blue rim around it was presented to me. Still.....I was not really impressed by the blue color.
But then, I remembered that the manufacturer had made an lockable 11cm central hole in the cap for......occasional planet observing??
It turns the original
Even as a rather spoiled planetary observer with a 120mm
I did not make a sketch. Instead I took an old sketch and tried to turn it with Paint into an impression which came near to it.
Here is the original sketch, with a 4.7 inch
Next the 110 mm
Quite a difference!
There still is a little problem though. Being so low near the horizon Atmospheric Dispersion kicks in. As an example I tried to make an impression of that too. So... to all occasional observers and beginners: if Jupiter looks like this, it is not your telescope, eyepiece or diagonal, it is the atmosphere! Don't worry, within several years the planet Jupiter and Saturn will be much higher up, and much of these colored rims will be vanished by then. Experienced observers use a atmospheric dispersion corrector to eliminate these colors.
Enjoy!
( experienced planetary observers will note I made a mistake. And I am not going to tell which one )