ESPaDOnS: An Echelle SpectroPolarimetric Device for the Observation of Stars at CFHT
Bibliographic record
Abstract
We present below an ongoing Franco-Canadian project for a new bright time instrument, a cross-dispersed 'echelle spectrograph/spectropolarimeter called ESPaDOnS, for general community use at the Canada-France-Hawaii Telescope (CFHT). The design specifications for this instrument are that it is to be able to obtain a complete optical spectrum (i.e. from 370 to 900 nm) in a single exposure, with a resolving power of about 50,000. If desired, ESPaDOnS will be able to measure all the polarisation components of the stellar light (circular and linear) with the same resolving power. The spectrograph will be bench-mounted and fed by a double optical fibre from a Cassegrain module containing all calibration facilities and the optional polarisation analyser, making it possible to have extremely good wavelength stability and minimal instrumental polarisation. ESPaDOnS should be a unique instrument worldwide in polarimetric mode, competitive with similar instruments on 8 m class telescopes in non-...
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.000 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.013 | 0.004 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".