| 21. | Spectrographs generally do not make use of exit slits.
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| 22. | The composition was discovered via spectrograph in an attempt to discover amino acids.
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| 23. | The observatory also has a 38 cm diameter photometric filters and a spectrograph.
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| 24. | It's like having your own personal spectrograph!
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| 25. | He specialized in designing objectives for high-speed cameras for astronomical spectrographs.
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| 26. | Wilson spectrographs used heavy glass lenses and prisms, which absorb ultraviolet radiation.
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| 27. | The HARPS spectrograph is the undisputed champion at finding low-mass extrasolar planets.
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| 28. | Montage of the HARPS spectrograph and the 3.6m telescope at La Silla.
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| 29. | The Hermes spectrograph was used to monitor the Star Delta Cephei in the 2010s.
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| 30. | A fibre linked echelle spectrograph is under construction.
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