yet more quattro

Spacing with the Quattro 0.86 cc:

17.5 + 21 + 15 = 53.5mm a bit too close
veTEC backfocus + svbony filter drawer with moon filter + m48 tube

m13 in hercules

veTEC571 on q150p 36x4min @ hcg100

m29 and associated mess in cygnus
veTEC571 on q150p    42x4min @ hcg100