Yes Mark the deep sky views through the 18" with a 24.5 SWA meade eyepiece are great!
The balance point is at the top of the mirror box and the OTA is 1621mm
I did the drawing on the CAD before I started building anything so I wouldn’t get any surprises half way through the building process so any measurement is no trouble at all.
I haven’t tried a Comacorr yet there is a bit of coma there but nothing that I’m worried about at this time.
I don’t know what type of telescope you are going to build but if it is anything like an Obsession I suggest you to get the book.
Happy ATMing!
