Center dotting my primary mirror 150x1400 Chinese barlowed Newtonian (TwinStar short tube)

How I added a center dot to my primary mirror on a 150x1400 Twinstar "short tube" Newtonian reflector (with optics in the focuser tube, sort of like a bird-jones design, but probably not executed especially well...)

[@veritaspk]

I have the same problem - exactly the same parameters - "Opticon150x1400" Even the way the main mirror is mounted is the same. Your video saves my money - because due to my lack of experience, I bought this equipment (there was a nice promotion) and now I have to bring it to a working condition. Thank you 🙂

[@summetj]

It's not a horrible telescope, but I bought a Celestron 104AZ refractor and was much happier with it. (I put the 104 OT onto the iOptron mount, put the twinstar OT onto the Alt/Az manual mount that came with the 104 and solid it....)