APO triplet with FPL53, DeepSky 80/480

I'm not sure at the moment—the focal point has changed. I put an afocal corrector with a color camera there, and the 0.79x corrector moved to the LZOS 130/6 telescope with a monochrome camera. Otherwise, I took the spacing value from the website, did several test runs, and based on the results, added a 0.7 mm ring to the nominal spacing.

Understood, thank you. I had an 80/480 triplet for a while. I found a spacer for it with a Canon 64 mm, but the sensor was offset. I modified it myself, tightening the screws all the way. So it sits closer to the bayonet, but by how much exactly, I don't know. That's why I asked if I can trust the information on the TS website. It says 61 mm there. I also planned to add a 0.7 mm ring because of the filter in the optical path, but now it seems I might need even more.

Pavel, good day. The length of the swallowtail is 137 mm.

Thank you!

By the way, I really liked the design of the harness there, and I replicated it in good-quality PETG plastic using a 3D printer. Here are some examples:
https://astronomy.ru/forum/index.php/topic,166015.msg4915732.html#msg4915732
https://astronomy.ru/forum/index.php/topic,166015.msg4843142.html#msg4843142
There are other implementations as well.

Interesting, I'll take a look.