I quickly assembled the telescope and conducted a short "first light" session, comparing the image with the Towa 60/700 - refractor with identical parameters. Towa is one of my best performers, until recently I put it in second place in terms of optics quality, right after the RAO R-74. Now it has probably moved to third position, giving way to the Carton T-620. However, I consider this specimen to be optically brilliant, giving me a great pleasure to observe. How does RAO R-63 fare against it?
I watched Jupiter and Saturn. This evening I only managed to use eyepieces with low magnification - up to 70x. At these magnifications, both planets looked beautiful, super-sharp. On Jupiter, I could see the irregularities of the two main belts, which were divided into smaller structures - among them the outline of the Great Red Spot. I tell the skeptics right away that I did not know if the Spot would be there at this time. After the observations I checked its position and it corresponded exactly to the place where I saw it with 70x magnification. Saturn was drawn sharply, precisely and spatially - even at 35x magnification it made a great impression with its naturalness and precision of the image. RAO showed only traces of chromatic aberration.
And Towa? Well - I'm not sure if I can make any firm comparative verdict. Perhaps RAO gave a slightly more precise or more contrasting image - but in this respect these instruments were comparable. I got the impression that the RAO is a bit more sensitive to off-axis viewing. Both instruments are affected by the "flares" that occur with bright objects such as Jupiter.
The mount: contrary to the fears raised here, it was enough to balance it and it works! Just! It can be turned freely and remains stable in its position, and on the other hand it runs very smoothly. Of course, it puts some minimal resistance, which with very small movements sometimes leads to "jumps" - but 2 moves are enough to get the right position, there is no need to "fight", repeatedly correcting the position of the tube. Nice idea - but I would prefer slow motions anyway ...
The telescope is neat, small and lightweight. However, not as light as the Towa, which can be easily carried with one hand.
And this is how it looks after assembling:
Edited by LukaszLu, 08 September 2021 - 06:04 PM.