MLAstro SHG 700 Spectroheliograph
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Information on MLAstro SHG 700 Spectroheliograph accessed 5/11/2025 from First Light Optics, UK, website: https://www.astronomy.me.uk/wp-content/uploads/2025/11/MLAstro-SHG-700-Spectroheliograph-First-Light-Optics-acc-051125.pdf