/sci/ - Science & Math

>>11106025
>Your picture looks like from maksutov
Yeah, it's from a maksutov or a schmidt cassegrain. I just wanted to use a picture togheter with my post.
>whose collimation isn't a thing for an amateur.
It's a little trickier I would think but I would not say it's outside the limit of an amateur. Collimation by star testing is doable even with catadioptric reflectors.

>>9955668
What you are seeing is Mars out of focus.