000008081 001__ 8081
000008081 005__ 20260318151725.0
000008081 037__ $$aCTALK-2026-0100
000008081 100__ $$aBechet, S.
000008081 245__ $$aSunspot drawings analysis: past data, current status and future trend
000008081 260__ $$c2025
000008081 269__ $$c2025-10-13
000008081 520__ $$aSunspot drawings are a unique source of data to retrieve long-term information on the evolution of the solar cycle. In this talk we will show how a complete archive of drawings can be analysed with modern tools and compiled into a database for scientific analysis. We will illustrate the data exploitation pipeline with the drawings acquired over more than 80 years with the local station USET at the Royal Observatory of Belgium (ROB).   Recently, the collection has been fully digitized and analysed. We will present our experience with DigiSun, the in-house software developed for the measurement of sunspot drawings and for the construction of a sunspot catalogue for USET. The software is multi-platform and can handle different drawing formats, which allows its application to collections from other observatories. A first successful international collaboration with the Specola Observatory in Locarno was initiated in 2019. In addition, DigiSun could be used to analyse historical drawings and extend the series of detailed solar parameters further back in the past.
000008081 594__ $$aSTCE
000008081 773__ $$tKerala, India
000008081 8560_ $$fsabrina.bechet@ksb-orb.be
000008081 85642 $$ahttps://events.iist.ac.in//TVS/
000008081 906__ $$aInvited
000008081 980__ $$aCTALKINVI