Upgrading the focuser on an 8" RC - Forums

Topic starter

Oct 12, 2023

This otherwise fine and popular scope's weakest link is its focuser, I think.
After a lot of problems I decided to upgrade to a much better focuser from Baader Planetarium. I have documented the process in a video where I also show how you can align the focuser perfectly with the optical axis of the primary mirror.
If you are interested you may find the video here: https://youtu.be/1logCewVcpI

Best regards,
Flemming

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Gustav Lundby

Oct 12, 2023

Luckily I did see this problem before buying and managed to make vendor do the swap against the cost difference.
I got the Teleskop-Express: TS-Optics 2,5" Zahntrieb Okularauszug mit M90x1 Anschluss und 360° Rotation . It allows me to place the flattener/reducer inside the focuser. I did not have to correct the direction of the focuser. I have a M90 tilt in front, but have not had to adjust it.

Flemming Kristensen

Topic starter

Oct 12, 2023 · Edited: Oct 12, 2023

Gustav Lundby:
Luckily I did see this problem before buying and managed to make vendor do the swap against the cost difference.
I got the Teleskop-Express: TS-Optics 2,5" Zahntrieb Okularauszug mit M90x1 Anschluss und 360° Rotation . It allows me to place the flattener/reducer inside the focuser. I did not have to correct the direction of the focuser. I have a M90 tilt in front, but have not had to adjust it.

Yes, that is also an ok focuser. It is mechanically identical to the one I have on my 94mm EDPH refractor, and works fine. It does feel a little bit springy, though, and not quite as responsive as the Diamond Steeltrack. That's fair enough considering the price difference.

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Jamie

Oct 17, 2023

Flemming Kristensen:
I got the Teleskop-Express: TS-Optics 2,5" Zahntrieb Okularauszug mit M90x1 Anschluss und 360° Rotation .

That's the same one I got for my TPO RC6 and love it.