I also feel that AstroDienst are a bit too generous with their orb allowances. I notice that there is a facility by which the orbs can be decreased by certain percentages, however, reducing this percentage does not tell you what the new orb allowances will actually be as a result. By what percentage would you recommend that the orbs are reduced to make these orbs reasonably more tight. What would you use?
Apparently these are the orbs most commonly agreed upon to be acceptable, which I believe are the Ptolemaic orbs:
Sun - 15'
Moon - 12'
Mercury - 7'
Venus - 7'
Mars - 7'
Jupiter - 9'
Saturn - 9'
Moderns attributed to - 5'
Hence an acceptable orb between Venus and Jupiter: 7' + 9' = 16', divided by 2 gives 8', hence 8' is the acceptable orb between Venus and Jupiter aspects. To me these orbs seem reasonable and workable.
By what percentage should I decrease the orb allowances in order to accord most closely to these orbs? Do you know?