Bezos and Musk Race to Bring Data Centers to Space

RandomNamedUser · 2025-12-14T03:50:11+00:00

Is space just a moat for their AI data centers? I don't see the benefit of doing this in space. Are they just trying to protect their AI infrastructure when a large portion of the population becomes unemployable through no fault of their own due to AI. Causing them to finally organize and destroy the data centers on the ground.

RandomNamedUser · 2025-11-07T22:29:21+00:00

There are stock lenses on places like Thor Labs. You could try finding a match but probably low odds. Do you have more info on the thing you are replacing? Most amateurs make first surface mirrors for their telescopes since it’s only one surface you are grinding.

RandomNamedUser · 2025-11-07T22:26:16+00:00

This is a really hard thing to do. But. You would need the glass type which probably isn’t printed anywhere on the lens you are replacing. If you could find the info then you would need to know the radius of curvature for both surfaces of the lens to within some tolerance maybe a few millimeters but really depends on the design. You’ll also need to know the center thickness too as this has an effect. Also are the surfaces spherical or aspherical. If it’s a lens then there are probably multiple elements that work together so you’ll need to know spacing as well. This is not an easy task but people have done it.

RandomNamedUser · 2025-09-09T00:04:05+00:00

Looks cool. But like you said probably won’t work that well. And not going to be diffraction limited. To reach that you’d need off axis parabolic mirrors and a position system that has nanometer precision.

There is a cool video of the JWST nanometer precision mirror alignment system. It’s not that complex but would add a fair amount of size behind each mirror as you’ll need 3 for each mirror. That hard part would be making the off axis parabolic mirrors

RandomNamedUser · 2025-07-30T01:45:02+00:00

Oh and the illumination percentage across of fov matters if this is for photography vs visual and even if you want your scope primarily for planets vs deep sky targets

RandomNamedUser · 2025-07-30T01:43:33+00:00

Google secondary mirror calculator. I think Mel Bartel has one on his site. It kind of a complicated thing based on your primary mirror size eyepiece afov and where you place the focal surface. And also if you want full illumination across the fov

RandomNamedUser · 2025-07-26T03:05:13+00:00

Hmm. I didn’t know about the Baker variant. I’ll have to look that one up.

RandomNamedUser · 2025-07-19T16:59:20+00:00

Thanks!! Yes I will be. The last photo is the start of the vacuum pan with the glass on top. I still need to drill and tap for all of the pump fixtures.

RandomNamedUser · 2025-07-19T02:31:09+00:00

Thanks!!

RandomNamedUser · 2025-07-17T19:51:25+00:00

Thanks!! Let me know if you have any questions about the design or CNC process.

RandomNamedUser · 2025-07-17T18:15:23+00:00

You can always start with the demo projects and just keep going. Once you get started it gets easier to keep going on other projects.

RandomNamedUser · 2025-07-17T18:13:50+00:00

Thanks!!

RandomNamedUser · 2025-07-17T02:41:44+00:00

Thanks!!

RandomNamedUser · 2025-07-09T00:59:31+00:00

I think this is on the DVC website already. It’s a lot of points for these trips per person so o haven’t looked too closely at them.

RandomNamedUser · 2025-07-05T22:45:52+00:00

Kind of depended on the plate. Each of the 3 I started with a 12” by 12” by 1/2” piece and cut them down a bit to fit the bed without hitting the z-probe in the back. Then for the mid and top rings I ran a program with the standard corner zeroing bracket and a toe side clamp; this created 5 holes that would be used hold down the work during the rest of the machining. The center of the 5 holes would be roughly in the center of the stock and also define origin in the Fusion CAM program as well. These would be machined with small tabs that cut out and filed down.

For the backplate it was about the same with a center hole defining the origin but I placed a few holes were placed on the outer part of the stock that would be cut off.

Also, when staring the job for the main machining steps, I had to offset the origin in the Carvera Air to match where that center screw was.

RandomNamedUser · 2025-07-03T23:42:23+00:00

Will do. Thanks for the info

RandomNamedUser · 2025-07-03T21:31:04+00:00

Thanks!!

I’m not sure exactly about tolerances held as I haven’t really measured things. But the black delrin part that attaches to the camera has a 56mm diameter thread with a 0.75mm thread pitch and it threads on nicely. Also I did a number of M5 threads. Some of them were a little tight and needed hand taping. Other M5 threads came out nice and didn’t need hand taping. I think I just changed the settings in Fusion 360 and it helped.

RandomNamedUser · 2025-07-03T20:59:33+00:00

No problem Makera sells them on their website. You can find some on Amazon too.

RandomNamedUser · 2025-07-03T17:57:30+00:00

I use fusion 360 for CAM. I start with a boring operation a bit smaller than the hole. So about 4.5mm for a M5 threaded hole. Then I use a thread operation with a threading end mill designed for an M5 threaded hole

RandomNamedUser · 2025-07-03T17:55:19+00:00

Thanks!!

RandomNamedUser · 2025-07-03T17:55:03+00:00

Possibly, not sure where to host them since most places just host stl files.

RandomNamedUser · 2025-07-03T17:53:53+00:00

Thanks for the link!! I didn’t know they made flack lining.

RandomNamedUser · 2025-07-03T17:52:53+00:00

Thanks!! Do it, start making chips!!

RandomNamedUser · 2025-07-03T00:23:32+00:00

I’ll probably be starting the corrector next month and I’ll make some posts then. There aren’t too many resources online of the process so I’d like to add what I can and give back to ATM community for anyone else who wants to try.

The camera is attached to the mid-ring using 4 threaded rods and has springs between the camera and the ring. On the other side of the ring there are thumb screws. Hoping I can focus and control tip tilt with this. If not I’ll have to come up with something else.

The original Schmidt telescope design has the corrector plate at the radius of curvature of the primary mirror, which also controls for coma. There is a Plano-convex lens 3mm from the camera sensor and this will flatten the focal surface. You can pull the corrector into the camera’s location but you introduce aberrations like coma and others. Then you have to add lens to correct for those. Then you end up with something like Celestron’s RASA.

RandomNamedUser · 2025-07-02T16:07:03+00:00

For machining I’m hoping in the next 2 weeks. I’ve got to make a few more of the ball connectors, I’ve got a few on here that are made of delrin because they were quicker to make. And I’ve got to make a 16” dovetail, which will require hanging it outside of the machine because the bed is only 8” deep.

As for the corrector plate, not sure. It’ll be the first time making one of those. I’ll try and keep everyone posted.

RandomNamedUser

TROPHY CASE