[Tinderboxsky (Steve)]

Two of these mirrors, and a similarly mounted flat mirror, were recently disposed of by the local CSIRO Science Education Unit. They were destined for the tip if there were no takers.
I put my hand up for one of the mirrors, sight unseen. With more time available, I have been thinking about making another telescope and thought it would be worth exploring whether the mirror would be suitable for a DIY project. I am a keen re-cycler and was thinking this might be a goer.

The unit has been made by Optical Works, London UK. The mount is extremely heavy and well engineered. As you can see there is fine adjustment for each axis. Unfortunately, a Google search turns up records to suggest this company closed some time ago.

The mirror dimensions are 314 mm diameter and 42.5 mm thick – a 12 X 1.75 inch in imperial measurements. Engraved on the back of the mirror is “17/9/84 8FL OWL”. The coating appears to be in very good condition.

Does anyone know anything about these mirrors and their original use? As mentioned above, it has come from the CSIRO.


As a possible DIY project, I now know the focal length, relatively long by today's trends. I assume my next step is to also understand the actual shape of the mirror. I would then be in a position to work out and decide whether it is a goer.

I would appreciate peoples’ comments to help me work out whether I am on the right track and any thoughts on the pros and cons as a DIY project.

Cheers

Steve.