I just bought an OAG-L, which I want to use with my ASI2600 camera and no filter wheel. The OAG includes no means of attaching the camera to the rear of the OAG cell. From the connection diagram, it appears that a filter wheel is normally used, and serves the purpose of connecting the two. I have not seen any reference to an adapter/spacer that mounts with screws to the rear of the OAG cell and carries a 48mm thread for the camera. I would presume that something of the sort must exist for those of us who do not wish to use a filter wheel, although I would expect it to be threaded for single filters.

What is my solution here?

    hlritter What is my solution here?

    The OAG-L and ASI2600 are not mutually compatible.

    Both have M2.5 holes, but the tapped holes in the camera are spaced 60º apart, while the OAG-L's four holes are tapped (at the same 31mm distance from the optical axis) with 90º spacing.

    If you insists on using the OAG-L, you can drill and tap four extra M2.5 holes in an extra ASI2600 tilt plate. You can drill just two extra holes if you don't care about placing the prism at the long axis edge of the sensor (you can mount the OAG with just two bolts too, but I won't recommend it).

    You may also need to liberally apply electrical tape to prevent light leaks when you mount the OAG directly to the camera's tile plate.

    Also, be ready to remove an extra 15mm from your guide camera's flange when you mount the OAG directly to your camera, since the guide camera is now closer to the main camera (filter wheel 20mm minus 5mm for the extra tilt plate).

    Chen

      7 months later

      Really? That's the only solution?

      What about the M54 adapter (D70-M54F), but that still requires to be BOLTED onto the camera. I have five separate rigs that I swap my two cameras between (an ASI2600MC and a ASI533MC)—so bolting an adapter to it is not an option. I need a threaded solution. Thoughts? Ideas?

      Thanks,
      Thomas Mastrocinque
      Tom62e@yahoo.com

      A filter drawer (54 mm) will solve all your problems.

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