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My astronomy project:
Replacing a 2.5" field flattener with a 3"


  1. Introduction and unpacking
  2. Planning for needed adapters
  3. Disassemble adapters and assemble them again
  4. Replacing off-axis adapter with a temporary guide telescope
  5. First Light and test
  6. Ultra thin M48 adapter
  7. Test with ultra thin adapter
  8. Guide telescope holder distances

I take no responsibility or liability for what are written here, you use the information on your own risk!

6: Ultra thin M48 adapter

I ordered the Ultra Thin M48 to EOS adapter. A couple of days ago I got it delivered, it looks to be well built and fit correctly.

Ultra thin M48 to EOS adapter

With this adapter I save 10 mm in length, maybe that will be enough. This adapter is much more stable compared to the old one, it dose not have a cone with its three stop screws that caused me problem, it wasn't possible to tighten enough. With this adapter I can't rotate the camera, but I can do that at another joint. This evening started with a clear sky, but after setup of the telescope and started all the programs the clouds came in. Sorry no test this evening.

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