Abstract

A 21-ft original concave diffraction grating, ruled in aluminum and blazed for 5500 Å, has been overcoated with a 1000-Å layer of aluminum followed by a 265-Å layer of magnesium fluoride. The relative grating efficiency has been evaluated in spectral orders 2 through 6 at 1335 Å. It was found that the efficiency was increased 12 times at 1335 Å (4th order) and 20 times at 1215 Å (5th order). The blaze was considerably sharper after coating than before coating. No impairment in resolving power resulted.

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  1. G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 46, 1009 (1956).
  2. G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 47, 1070 (1957).
  3. G. Hass and R. Tousey, J. Opt. Soc. Am. 49, 593 (1957).
  4. P. H. Berning, G. Hass, and R. P. Madden, J. Opt. Soc. Am. 50, 586 (1960).
  5. D. W. Angel, W. R. Hunter, R. Tousey, and G. Hass, J. Opt. Soc. Am. 51, 913 (1961).
  6. P. G. Wilkinson, J. Mol. Spectroscopy 1, 288 (1957).
  7. A. Lofthus, J. Chem. Phys. 25, 494 (1956).
  8. Model 78-860, 6.65-m Off-Plane Eagle vacuum spectrograph, The Jarrell-Ash Company, Newtonville, Massachusetts.
  9. P. G. Wilkinson, J. Opt. Soc. Am. 45, 1044 (1955).
  10. P. G. Wilkinson, Astrophys. J. 1, 10 (1957).

Angel, D. W.

D. W. Angel, W. R. Hunter, R. Tousey, and G. Hass, J. Opt. Soc. Am. 51, 913 (1961).

Berning, P. H.

P. H. Berning, G. Hass, and R. P. Madden, J. Opt. Soc. Am. 50, 586 (1960).

Hass, G.

P. H. Berning, G. Hass, and R. P. Madden, J. Opt. Soc. Am. 50, 586 (1960).

G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 47, 1070 (1957).

G. Hass and R. Tousey, J. Opt. Soc. Am. 49, 593 (1957).

D. W. Angel, W. R. Hunter, R. Tousey, and G. Hass, J. Opt. Soc. Am. 51, 913 (1961).

G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 46, 1009 (1956).

Hunter, W. R.

G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 46, 1009 (1956).

D. W. Angel, W. R. Hunter, R. Tousey, and G. Hass, J. Opt. Soc. Am. 51, 913 (1961).

G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 47, 1070 (1957).

Lofthus, A.

A. Lofthus, J. Chem. Phys. 25, 494 (1956).

Madden, R. P.

P. H. Berning, G. Hass, and R. P. Madden, J. Opt. Soc. Am. 50, 586 (1960).

Tousey, R.

G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 47, 1070 (1957).

G. Hass and R. Tousey, J. Opt. Soc. Am. 49, 593 (1957).

D. W. Angel, W. R. Hunter, R. Tousey, and G. Hass, J. Opt. Soc. Am. 51, 913 (1961).

G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 46, 1009 (1956).

Wilkinson, P. G.

P. G. Wilkinson, J. Opt. Soc. Am. 45, 1044 (1955).

P. G. Wilkinson, Astrophys. J. 1, 10 (1957).

P. G. Wilkinson, J. Mol. Spectroscopy 1, 288 (1957).

Other

G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 46, 1009 (1956).

G. Hass, W. R. Hunter, and R. Tousey, J. Opt. Soc. Am. 47, 1070 (1957).

G. Hass and R. Tousey, J. Opt. Soc. Am. 49, 593 (1957).

P. H. Berning, G. Hass, and R. P. Madden, J. Opt. Soc. Am. 50, 586 (1960).

D. W. Angel, W. R. Hunter, R. Tousey, and G. Hass, J. Opt. Soc. Am. 51, 913 (1961).

P. G. Wilkinson, J. Mol. Spectroscopy 1, 288 (1957).

A. Lofthus, J. Chem. Phys. 25, 494 (1956).

Model 78-860, 6.65-m Off-Plane Eagle vacuum spectrograph, The Jarrell-Ash Company, Newtonville, Massachusetts.

P. G. Wilkinson, J. Opt. Soc. Am. 45, 1044 (1955).

P. G. Wilkinson, Astrophys. J. 1, 10 (1957).

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