กล้องโทรทรรศน์, โลหะ, ดู, เครื่อง, ออกแบบ, ท้องฟ้า, ภูมิประเทศ, การสังเกต, มุมมอง, ระยะทาง, โฟกัส
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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