Lightweight and only 16.5mm thick! Large prism - 8x8mm Guide through your main imaging scope - no guide scope required! Multiple adapters available including T2, M42 and M48 making it easy to fit to most cameras and telescopes Fully compatible with all ZWO ASI cameras Good stability - strong, stiff connection to the telescope Bought this and the Zwo oag L so this is spare as I’m using the large
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