Pith Number

pith:XR5KIM7R

pith:2025:XR5KIM7R24IW4FHXICI7LUTEMH

not attested not anchored not stored refs pending

Prototyping of 6.2-mm-Pitch Fiber Positioner Modules for Stage-V Telescope Instrumentation

Abby Bault, Ayumu Suto, Corentin Magnenat, David Kirkby, David Schlegel, Eri Fukushima, Jean-Paul Kneib, Jonathan Wei, Joseph Harry Silber, Malak Galal, Maxime Rombach, Nicholas Wenner, Oliver Pineda Su\'arez, Ricardo Ara\'ujo, Robert Besuner, Satoshi Sonoda, S\'ebastien Pernecker, Stefane Caseiro, William Van Shourt, Yasuyuki Kobayashi, Yves Moser

Prototypes show 6.2 mm pitch fiber positioners meet precision needs for dense focal planes.

arxiv:2508.19711 v3 · 2025-08-27 · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XR5KIM7R24IW4FHXICI7LUTEMH}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

Initial results are highly encouraging, indicating that these miniaturized positioners can successfully overcome spatial limitations while maintaining stringent tolerances and that 6.2 mm-pitch modules are highly suitable for the next generation telescopes and the massive multi-object spectroscopic facilities.

C2weakest assumption

The measured performance of the small-scale prototypes (repeatability, non-linearity, backlash, and fiber tilt) will hold when the modules are integrated into a full-scale focal plane under operational conditions including thermal, vibrational, and long-term reliability stresses.

C3one line summary

Prototyping and quantitative evaluation of 6.2-mm-pitch alpha-beta fiber positioner modules showing encouraging positioning accuracy and low fiber tilt for Stage-V spectroscopic surveys.

Receipt and verification

First computed	2026-05-28T01:05:10.646256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc7aa433f1d7116e14f74091f5d26461dbcb0d10ad5263d124748f9d4cee0a9b

Aliases

arxiv: 2508.19711 · arxiv_version: 2508.19711v3 · doi: 10.48550/arxiv.2508.19711 · pith_short_12: XR5KIM7R24IW · pith_short_16: XR5KIM7R24IW4FHX · pith_short_8: XR5KIM7R

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/XR5KIM7R24IW4FHXICI7LUTEMH \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: bc7aa433f1d7116e14f74091f5d26461dbcb0d10ad5263d124748f9d4cee0a9b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18981dab376289c95be51150fa4cab0115319bc3ed499985a4ebc9350f9263cb",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2025-08-27T09:18:03Z",
    "title_canon_sha256": "85b9368db9bf81c844afe50fcf56b16116b5fc003a95672178bf11d3e16d3b6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.19711",
    "kind": "arxiv",
    "version": 3
  }
}