Floyd
Thanyou for posting!!!
What a wonderful non-bias well thought out report.
The only bias I see is from your eye for a warmer lens comparing the radian to bo-tmb.
I have done direct comparisons with the 4mm 6mm with the radians and got the same results with the radians showing better contrast with the bands,but my eyes have a cooler lens bias and I can see finer detail with the bo-tmb.
For example: I was looking at Jupiter with a friend and we both could see Io and its shadow as it came across Jupiter. Soon my friend could no longer see the moon but I still could. He put in his tv plossl and could see the moon again but I could not. Strange.
The scope I used is my 10 f6 dob. I have the 4mm 6mm 9mm bo-tmb and will order the 3.2mm 5mm 7mm.
I do not wear glasses but I have deep eye sockets.
I hate to mash my eye against eps. I need the eye relief and love the wider field.
I own the 13mm t6 and love it. I bought the 7t6 and 9t6 with out looking thru one and was very dissapointed and sold them for a loss quickly.
Reviews are a great tool for buying that perfect ep. But you should always try for yourself before you buy unless they have a good return policy.
Joe