Some web links provided below to make things clear
https://github.com/sunpy/sunkit-image/issues/37
STARA sunspot detection software
fraserwatson
====
29. The STARA Sunspot Catalog
Contributed by Fraser Watson. Posted on October 2, 2014
Fraser Watson
National Solar Observatory, Tucson, AZ 85719, USA
http://hmi.stanford.edu/hminuggets/?p=981
Automated sunspot detection and the evolution of sunspot magnetic fields during solar cycle 23
Watson, Fraser ; Fletcher, Lyndsay
https://ui.adsabs.harvard.edu/abs/2011IAUS..273...51W/abstract
Evolution of sunspot properties during solar cycle 23
Watson, F. T. ; Fletcher, L. search by orcid ; Marshall, S.
https://ui.adsabs.harvard.edu/abs/2011A%26A...533A..14W/abstract
A Multi-wavelength Analysis of Active Regions and Sunspots by Comparison of Automatic Detection Algorithms
Verbeeck, C. ; Higgins, P. A. ; Colak, T. ; Watson, F. T. ; Delouille, V. ; Mampaey, B. ; Qahwaji, R.
https://ui.adsabs.harvard.edu/abs/2013SoPh..283...67V/abstract
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29. The STARA Sunspot Catalog
Contributed by Fraser Watson. Posted on October 2, 2014
Fraser Watson
National Solar Observatory, Tucson, AZ 85719, USA
Sunspots
http://hmi.stanford.edu/hminuggets/?p=981
https://soho.nascom.nasa.gov/data/synoptic/sunspots_earth/sunspots_512_20221008.jpg
https://soho.nascom.nasa.gov/data/synoptic/sunspots_earth/sunspots_512_20221006.jpg
https://soho.nascom.nasa.gov/data/LATEST/current_eit_171.gif
https://www.researchgate.net/profile/Fraser-Watson
Automated sunspot detection and the evolution of sunspot magnetic fields during solar cycle 23
Article
Full-text available
Sep 2010
Fraser Thomas Watson
Lyndsay Fletcher
The automated detection of solar features is a technique which is relatively underused but if we are to keep up with the flow of data from spacecraft such as the recently launched Solar Dynamics Observatory, then such techniques will be very valuable to
the solar community. Automated detection techniques allow us to examine a large set of data in a...
https://www.researchgate.net/publication/46588193_Automated_sunspot_detection_and_the_evolution_of_sunspot_magnetic_fields_during_solar_cycle_23
[1009.5884] Automated sunspot detection and the evolution of ...
https://arxiv.org › astro-ph
by F Watson · 2010 · Cited by 14 — This article details the use of the Sunspot Tracking And Recognition Algorithm (STARA) to create a sunspot catalogue.
Glasgow Theses Service
http://theses.gla.ac.uk/
theses@gla.ac.uk
Watson, Fraser Thomas (2012) Investigating sunspot and photospheric
magnetic field properties using automated solar feature detection. PhD
thesis.
http://theses.gla.ac.uk/3429
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