cthiker wrote:I think this refers to the High-Angle Track that we used to call a Low-Angle Track until the Berkeley gang straightened us out!
Yes. For whatever reason (I think it was sometime last August, see Tutorial 14) the team suddenly decided to confuse us by renaming what dusters had until then been informally calling
'Low-Angle' Tracks (i.e. those coming in close to the aerogel
horizontal surface) as
'h.a.' or 'High-Angle' Tracks.
The team's preferred reference is obviously
perpendicular to the surface, i.e. the direction from where interstellar as opposed to interplanetary or spacecraft collision debris impacts are most likely to come (always assuming correct orientation of the collector perpendicular to the interstellar stream, but that's another matter).
Hence we have the clumsy topic title
'High Angle Tracks - Formerly Low Angle Tracks.'
cthiker: not sure, but you may have been first to use the capitalized acronym* HAT here:
http://stardustathome.ssl.berkeley.edu/ ... ght=#14330
*PS Nikita: I love your term 'anogram' (vs. 'anagram', let alone 'acronym'), which could have some interesting medical connotations!
John