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I work in vacuum technology. Thin film deposition for optical surfaces is a highly skilled process. A telescope mirror needs to have a coating that is one atom thick distributed over the surface. If the coating is uneven then your 1/10 wave mirror quickly becomes 1/4, 1/2, or even 1 or 2 wave.
That item is just the vacuum chamber. Doesn't seem to have anything else. It has a couple of NW25 vacuum ports but these are only for attaching vacuum gauges and perhaps the roughing pump. (The mechanical vacuum pump that removes most of the air before the turbo pumps turn on.)
You don't need ultra high vacuum, high vacuum is ok. I've seen deposition units work at 1 billionth of an atmosphere. At that pressure there is plenty of mean free path. That means the aluminium atoms can travel 60 metres at that pressure without hitting any gas molecules.
The main thing is cleanliness. You'll need to operate the system in a clean environment. You also have to understand how to calculate the correct amount of metal to evaporate and deposit.
For this volume you would want 3-4 250 l/s turbomolecular pumps approx $20000 ea, 2 rotary pumps approx $2000 each, vacuum gauges for backing pumps and for high vac $6000.
Sub total : - $90000
You'll need high vacuum valves. A can't see any ports to attach the pumps though they might be underneath. However this chamber might be designed to be attached direct to the top of a giant oil diffusion pump (old tech). In that case, you'll need to get a 1 m flange with ISO flanges welded into it to take the turbo pumps.
Sub total $10000-$20000
I can't see any high current feedthroughs to supply the evaporation boats that will evaporate the aluminium nor any ports to connect the . You'll need to buy platinum evaporation boats, pure high grade aluminium
Sub total $10000
You are probably looking at an investment well north of $100000 for the unit alone plus the large clean space to house it.
I recommend you forget it or buy it and use it as an anchor.
cheers
Joe
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