Spacing for 12" Metrogon?

[tracy_storer1]

Some time ago I aquired the cells for a B+L 12" Metrogon. (Don't ask why, I

don't know myself....because they were there, I suppose)

Anyone know the correct spacing for the cells?

Thanks,

[ed_balko3]

Try an outfit called "Surplus Shack" - they have a website that Google finds easily. They used to sell Metrogon elements and would furnish a dimensioned drawing for the 153mm Metrogon.

[rob_tucher]

I have one. I will have to look it up but I know that I have the dimensions at home. If you email me, I will be glad to return with the dimensions. Don't take this as fact, but 1.35 inches sticks in my head. This would be from lens mount base to lens mount base.

[tracy_storer1]

Well, just for anyone else looking for this info later...

Rob emailed me the info. The spacing is 1.365" measured from the mounting

surface on the back of each cell. (where the mounting holes are)

[murrayatuptowngallery]

Does anyone have the comparable flange-to-flange distance for the 6" Metrogon? I have only seen glass-to-glass anecdotal data.

 

I tried to measure the shutter on my 6" and since it's a multi-step calculation, it invites tolerance stackup errors.

 

If this is 'known' with some degree of certainty I'd feel better confirming my measurement. I wonder if each one is different since each lens cell pair were measured & marked.

 

Thanks

 

Murray