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That video was pretty wild. I didn’t understand at first what had happened when the silver layer got laid down and it was suddenly reflective

by cududa 2y ago

dylan604 2y ago
The video was very cool. The arm swings around and hello! Just like that, it's a shiny mirror. Very impressive effect to be sure
- keitmo 2y ago
  That was breathtaking.
Loughla 2y ago
God the work that went into that one shot. Not just camera work, but all the engineering for the mirror. It's astounding.
- prpl 2y ago
  The mirror is the easy part. In fact, it was finished years ago - just not coated.
  - dylan604 2y ago
    lulz. Easy. Okay. It might be the easiest part of this build (I have my doubts to the accuracy of that), but let's not get carried away with slinging words like "easy" around things that are measured to microns accuracy and took years to build.
    - prpl 2y ago
      Maybe not “easy” but it was straightforward in comparison to much of the other things on the project. It was done in the U of A mirror lab and it’s a pretty well-defined process to build these mirrors, with a small exception for this mirror being that it’s a combination M1/M3 with two different grinds, but it’s about as close to a factory process as you can get for this project. Before the mirror lab, Corning would often build the big mirrors, both for science and defense. The 300T telescope movement assembly which can move the 300+ Ton telescope 3.5 degrees in 5 seconds, and the 3.2 GP camera especially are quite a bit harder to build, engineer, and integrate.
  - OldGuyInTheClub 2y ago
    Here's how they cast an 8m class mirror at the University of Arizona. This is for the Giant Magellan Telescope, not the VRO, but it also did that one. \ https://www.youtube.com/watch?v=c-lBKuHqHk0 https://www.youtube.com/watch?v=c-lBKuHqHk0 Grinding and polishing is its own art. https://www.youtube.com/watch?v=ebqeygLdBYc https://www.youtube.com/watch?v=ebqeygLdBYc None of this looks easy to me.

That video was pretty wild. I didn’t understand at first what had happened when the silver layer got laid down and it was suddenly reflective

by cududa 2y ago

That video was pretty wild. I didn’t understand at first what had happened when the silver layer got laid down and it was suddenly reflective

dylan604 2y ago

The video was very cool. The arm swings around and hello! Just like that, it's a shiny mirror. Very impressive effect to be sure

keitmo 2y ago
That was breathtaking.

Loughla 2y ago

God the work that went into that one shot. Not just camera work, but all the engineering for the mirror. It's astounding.

prpl 2y ago
The mirror is the easy part. In fact, it was finished years ago - just not coated.
- dylan604 2y ago
  lulz. Easy. Okay. It might be the easiest part of this build (I have my doubts to the accuracy of that), but let's not get carried away with slinging words like "easy" around things that are measured to microns accuracy and took years to build.
  - prpl 2y ago
    Maybe not “easy” but it was straightforward in comparison to much of the other things on the project. It was done in the U of A mirror lab and it’s a pretty well-defined process to build these mirrors, with a small exception for this mirror being that it’s a combination M1/M3 with two different grinds, but it’s about as close to a factory process as you can get for this project. Before the mirror lab, Corning would often build the big mirrors, both for science and defense. The 300T telescope movement assembly which can move the 300+ Ton telescope 3.5 degrees in 5 seconds, and the 3.2 GP camera especially are quite a bit harder to build, engineer, and integrate.
- OldGuyInTheClub 2y ago
  Here's how they cast an 8m class mirror at the University of Arizona. This is for the Giant Magellan Telescope, not the VRO, but it also did that one. \ https://www.youtube.com/watch?v=c-lBKuHqHk0 https://www.youtube.com/watch?v=c-lBKuHqHk0 Grinding and polishing is its own art. https://www.youtube.com/watch?v=ebqeygLdBYc https://www.youtube.com/watch?v=ebqeygLdBYc None of this looks easy to me.