Similar to カセグレン式望遠鏡

Boeing B-29 Superfortress

Boeing B-52 Stratofortress

Convair B-58 Hustler

North American XB-70 Valkyrie

BAC TSR-2

BASIC

Bremgarten-Dietikon-Bahn

Berkeley Software Distribution

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13 (number)

19 (number)

40 (number)

50 (number)

70 (number)

Quito Astronomical Observatory

Aerial telescope

Refracting telescope

Altazimuth mount