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Available NOW! 12/8/25 Overview The wait is over!!! MLAstro 10mm Quartz Slit is the extended-length upgrade for the SHG 700, built for solar spectroheliographers who want to capture the entire Sun in one pass on longer focal length telescopes. Designed with a premium heat-resistant quartz substrate and MLAstro’s OD7-rated coating (on VIS), this slit can now handle unfiltered scopes up to 130 mm aperture at f/7 or slower. To achieve this, we need a complete rethink of the slit coating/lithography process and even the glue that attaches the slit to the slit mount has to be beefed up too.
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We currently ship within the US, with more countries coming soon.
Final cost and dates are confirmed at checkout.
🇺🇸 Ship from USA · On Agora since 2025
$120.00
