Finally assembled lens cell

[vlaiv]

Some time ago I decided to purchase doublet achromat lens from AliExpress. It arrived in great condition, but I haven't managed to find time to do anything meaningful with it until now.

Here it is mounted in 3d printed lens cell. Hopefully, I'll get aluminum tubing for OTA and dew shield in a few days so I can start assembling this DIY scope.

Btw, lens is 80mm F600 one.

 

[vlaiv]

Small update.

Tested it today and it looks very promising. Even placed on a table with eyepiece (32mm Plossl) hand held about 555mm away from the cell it gives surprisingly sharp image.

[Mkv]

Looking great! I've got a D83mm F400mm lens on the way, and I'm planning to do something similar. Any chance you could share the 3D design on Thingiverse please?

[vlaiv]

11 hours ago, Mkv said:

Looking great! I've got a D83mm F400mm lens on the way, and I'm planning to do something similar. Any chance you could share the 3D design on Thingiverse please?

This is work in progress - and it requires knowledge of tolerances of your printer. It is designed specifically my printer and for my lens size and tube size that I plan to use.

Not sure if STLs would do you any good.

Here is FreeCAD model that you can tweak and adjust to suit your lens once you measure it - and adjust for your tube size (ID/OD).

Hope you'll be able to use it (FreeCAD is open source so it's readily available)

Lens cell.FCStd

If you have any questions about it, I'd be happy to answer them.

[Mkv]

55 minutes ago, vlaiv said:

This is work in progress - and it requires knowledge of tolerances of your printer. It is designed specifically my printer and for my lens size and tube size that I plan to use.

Not sure if STLs would do you any good.

Here is FreeCAD model that you can tweak and adjust to suit your lens once you measure it - and adjust for your tube size (ID/OD).

Hope you'll be able to use it (FreeCAD is open source so it's readily available)

Lens cell.FCStd 2.29 MB · 4 downloads

If you have any questions about it, I'd be happy to answer them.

Thank you for sharing this. Quite likely I will need to adjust the design, as in one description the lens is 80mm, in the other it's 83mm. A good opportunity to learn FreeCAD