oohhh,
no, Saturn in the 10mm is not 4 times bigger than the 40mm.
or maybe it is... difficult to say when we are still talking needle pins. ..
it is a bigger needle pin - one you would use to sow leather with as opposed to one for sowing on buttons. hmm.
I don't want to do visual observation with the tube, now.
I enjoy the discoveries my camera does for me.
I'm not doing AP for the art.
I do it for the effect that the extended light gathering has.
So buying Barlow or eye piece is not on my short list.