Not much change to my measurements. A more careful measuring is 1055mm from primary to centre of secondary, 235mm (not 230) to focal plan and 250mm primary.
Should I concern myself with the secondary offset? There seems to be a few differing view points regarding offsetting the secondary.
Any comments as to why Meade would fit a 63mm secondary.
LB 10” actual measurements - 1000mm from primary to centre of secondary, 245mm to focal plan and 250mm primary. Minimum secondary would be 49.2mm; 63mm seems way too large. Is there a good reason.
The illuminated field.
I have read all those sites and others, but I don’t understand the illuminated field and how it’s affected by the secondary. I need drawings/pictures.
I'll keep looking and reading.