https://doi.org/10.59132/fi/2026/1/29-38
Izvleček
V drugem delu članka predstavljamo celoten postopek obdelave in analize digitalnih posnetkov Sonca za določitev temperature Sončevih peg. Z uporabo prosto dostopnih astronomskih programov smo kalibrirali surove posnetke ter zmanjšali šum in prispevek sipane svetlobe. Na osnovi Eddington-Barbierove aproksimacije, Planckove funkcije in predpostavke lokalnega termodinamskega ravnovesja (LTR) smo ocenili temperature v osrednjih predelih Sončevih peg. Izmerjene temperature med 4600 in 5600 K presegajo vrednosti, ki jih navaja literatura (3600–4200 K). Vendar ob upoštevanju virov napak in omejitve šolske opreme rezultati ostajajo fizikalno smiselni. Članek potrjuje, da je mogoče v šolskem okolju izvesti kakovostne meritve, če so podatki ustrezno obdelani in interpretirani.
Abstract
Estimation of Sunspot Temperatures Using Simple School Equipment (Part 2)
In the second part of the article, we present a comprehensive procedure for processing and analysing digital images to determine the temperature of sunspots. By utilising freely available astronomical software, we calibrated raw images, reduced noise and minimised the effects of scattered light. Following the Eddington-Barbier approximation, the Planck function, and the assumption of local thermodynamic equilibrium, we estimated the temperatures in the central regions of the sunspots. Our measurements indicated temperatures ranging from 4600 K to 5600 K, which exceeded the values typically reported in the literature (3600 K to 4200 K). However, considering potential sources of error and the limitations of our school equipment, these results remain within a physically plausible range. We demonstrate that high-quality measurements can be acquired in a school setting, provided that the data are processed and interpreted correctly.