◆ PARALLAX

I will keep it clean. Template I am using: time in GMT, location, compass bearing, number of aircraft, trail start and stop, fade time, spread time, cloud cover before pass, cloud cover after pass, photo frame numbers if any.

Amazing how a normal winter sky becomes a case file once everyone gets a clipboard.

Still, the control idea is the first sensible thing in here. If you can show the same route making two different trail types under the same conditions, I will pay attention.

Freezing today's ledger before sleep. Open questions: were the aircraft on known corridors, did the upper-air humidity support long persistence, did the two-level wind explain the spread, and do the photos match the written bearings?

No chemistry claims entered. Geometry and timing only.

Receipt placeholders for the records request are in my notebook now. I will post response dates and file numbers when they arrive, not names of clerks and not guesses about intent.

The request asks for routes, NOTAMs, training notices, and weather-modification records for the logged window.

Morning control sky: clear before sunrise, one ordinary westbound trail at 0704 GMT, fade under three minutes, no spread into sheet by 0720.

Surface wind calm, high cloud absent. This is the kind of dull comparison we need beside yesterday.

Radio control from my side: no matching VHF oddity during yesterday afternoon's main spread, and nothing unusual during this morning's quick-fade trail.

Keeping the negative entries because otherwise the log starts flattering itself.

Preserve the negative results with the positive ones. Empty skies, ordinary trails, dead receivers, cloudy days, bad photos, and wrong first impressions all belong in the folder.

A file with only strange entries is a story collection, not a log.

Marking this thread unresolved, ledger continuing. Yesterday gives us photographs, bearings, timing, witness comparisons, and a records request. It does not give a chemical conclusion or a programme name.

Next useful post should add a comparable day, not a bigger claim.