I think the most that can be said is that to date they appear to prefer locations near the base of a cliff, but that can be in either a valley or crater. The ground they are on seems usually to be a light sandy colour (Edit-& perhaps the colour & type of the planet in the system map is a clue) I posted somewhere on the forum an analysis (I merely expanded the detail of a previous post's analysis & am not claiming any credit!) of the lat/long areas based on those found in the Pleiades- they seem to have some lat/long preferences , but who knows if that will be replicated in other nebulae? Everyone appears to agree that they are difficult to spot, but I remember someone posted that their lights were observable from up to about 8 Km on the dark side of a planet depending on your graphics settings; I don't think that was confirmed by anyone else & personally I have difficulty finding them from 500 feet when I know their coordinates!
Edit-Iridium Nova on 21Jan
#8526 (UA threadnought 5?) posted that its possible to aurally detect from the SRV barnacles at long distance- perhaps they can be triangulates for likely search areas?
2nd Edit-found my previous post -07/04/2016 #4297
following an Original Post by
PaulR [url]https://forums-cdn.frontier.co.uk/images/frontier/buttons/viewpost-right.png[/URL]
"I'm not good at Barney hunting, but after seeing a post the other day I looked at the reported Barney positions (first page of this thread) versus planet size & arrived at this, it may help:
From the data there seems to be a pattern relating the size of the planet and possible location of barnacles:
437 km radius- location approx (-1.8, +45) or (13, 18) or (49, 102) or (-17…-18, -17…-18) or (-28, 29) or (60…61, -51…-56) or (46, -63)
476 km radius- location approx (19…25, 86…107 ) or (-58, 107) or (-1, 26) or (9, 22) or (-21, -85)
720 km radius- location approx (59, -51…-60)
1423 km radius- location approx (-0.7…-3.0, -163…-165)
1478 km radius- location approx (-26, -156)"