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@ Elena ``of Valhalla''
2025-02-27 06:20:26nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqfuvd20escvv64wtdehlqtgkm42vaeff645we6ggzslafe7upmyqsd64zae nostr:nprofile1qy2hwumn8ghj7un9d3shjtnddaehgu3wwp6kyqpqa00w8g93uhl9ja3f8vfzw92crfryqlem8k9syt389jm87kjjynrshcd602 probably a fresnel lens: I have a credit card sized one and they are quite neat