Lesson 8.4 Aid: Field-night safety, fatigue, and the cohort buddy system
A night of field astronomy is not dangerous. It is, however, uncommon — and most accidents happen in uncommon situations because the body’s ordinary autopilots stop working. This lesson covers the five safety habits that the SPHERE team treats as non-negotiable at Alqueva.
1. The buddy system. From the moment the sun sets to the moment the sun rises, no SPHERE participant moves alone outside the lit perimeter of the residency centre. This includes trips to the bathroom, to fetch a forgotten cable, or to “just check on something”. Your pod or your buddy goes with you. Carry a head-torch with a red filter (white light destroys dark adaptation for everyone within 50 m).
2. Fatigue. Real, biological fatigue. Field nights run from 22:30 to 03:30. Fatigue manifests as: irritability, cold sensitivity, micro-sleeps, simple arithmetic errors, mood swings, and — the dangerous one — feeling fine when you are not. Drink water. Eat the snacks the cohort kitchen has prepared. Take the seated breaks the schedule mandates. If a pod member is showing fatigue signs, the pod must rotate or rest them.
3. Cold and exposure. Even in July, Alqueva nights drop into the 12–15 °C range and feel colder due to inactivity. Layered clothing is mandatory: thermal base layer, warm mid-layer, windproof outer layer, hat, gloves.
4. Equipment and electrical safety. Field power is from generators or 12V battery banks. Do not plug personal devices into observation power without authorisation. Do not move a powered telescope. The default response to “is this safe?” is “ask”.
5. Mental health and consent. SPHERE residencies have at all times two designated safeguarding contacts (one male, one female; named in your residency folder) available 24/7 for any concern — homesickness, conflict, distress, or anything that does not feel right. There is no concern too small.
💡 Bella’s tip: The cohort that takes care of itself is the cohort that brings home good data. Safety is not opposed to science. It is the floor science stands on.
📝 Activity: Download and read the [Alqueva 2026 Safety Checklist] (link: /wp-content/uploads/sphere/stage08/alqueva-safety-checklist.pdf). Tick each item in the checkbox block below. Submission of the completed checklist is mandatory before residency travel.