Complete Drifter's Guide coverage for the Deep Frontier. 61 new entries from hop 3 (Cairnside) to hop 23 (Abzu), plus updated gttr-deep.md index with all 61 deep systems. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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THE DRIFTER'S GUIDE TO THE REACH — CAIRNSIDE
CAIRNSIDE is a materials science program that has been running for forty years and has not yet noticed it has also become a town.
The Variable Star Problem, Reframed
Most settlement expeditions surveying this pocket looked at the K3Vvar primary — a star that fluctuates, cycles, and generally behaves in the way that stellar stability assessments call "challenging" and agricultural engineers call "a reason to go somewhere else" — and moved on. The Cairnside team looked at the same data and filed a charter, because they were not looking for somewhere to farm. They were looking for a laboratory, and a variable star is, from a materials science perspective, an extremely well-equipped one.
The logic is sound. Every structure built at an environmental boundary — flare-star infrastructure, deep-frontier stations, anything expected to absorb irregular stress patterns and irregular radiation over operational lifetimes — needs certification data from irregular conditions. Cairnside is the only place in the Reach generating that data at scale, with forty years of continuous observation behind it. The export economy waiting at the far end of this research program is, by the lead researcher's own estimate, ten to fifteen years from maturity.
The settlement, meanwhile, imports food through Cairn's automated transit systems, which are the kind of infrastructure that functions reliably until it doesn't, and which nobody staffs because nobody lives in Cairn. This is noted internally as manageable and described externally as "the supply arrangement," a phrase that communicates accurate information through careful word selection.
What the Records Show
Forty years of materials research under a variable star produces, as a byproduct, forty years of precise astrophysical observation. The Cairnside team's instruments are calibrated for materials work and accurate enough for stellar physics. The data exists. It is organized. It has not been analyzed by anyone with the training to know what a forty-year output record of this particular star's long-term stability trajectory would reveal — because stellar physics is not the team's field, their funding mandate does not cover it, and they have been busy.
A forty-year observation window resolves patterns that shorter records cannot. Whether what those patterns describe falls within normal variable parameters, or somewhere outside them, is not a question that has been formally asked.
Crown's Hollow, two hops away through Cairn, has maintained a non-commercial access license to the empty hub for longer than the Cairnside charter has existed. The court has not communicated with the settlement. The settlement has not communicated with the court. The mutual awareness of this arrangement is polite and probably impermanent.
Practical Information
Cairnside sits at the end of a spur through Cairn — two gates, no permanent station staff, freight dropped and collected by automated systems. The K3Vvar star cycles visibly across weeks and months; visitors from stable-star systems may notice the light quality shifting. The community is forty years old and governed by the founding generation, who are still present, still running the council, and still doing the research they came here to do. The guest facilities are functional and described by residents as "adequate for the purpose," where the purpose is not tourism.
Adams of the Guide rates Cairnside: A forty-year experiment that has yet to ask the most important question.