Abstract

We describe a dual-mirror wide angle optical design, which removes the radial distortion associated with traditional all-sky optics for a chosen altitude. The wide angle mirror system provides a transform of the sky, for a selected altitude, as if the viewer is situated at the center of the Earth. Other advantages of the system include (1) real time achromatic transform, (2) higher optical gain compared to pure lens systems, (3) a quasi-telecentric optic capable of taking narrowband interference filters without modification, and (4) a uniform sky spatial resolution everywhere on the detector. Disadvantages include (1) cost of manufacture and (2) focusing issues, especially near the horizon.

© 2009 Optical Society of America

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1998 (2)

M. J. Kosch, M. W. J. Scourfield, and E. Nielsen, “A self-consistent explanation for a plasma flow vortex associated with the brightening of an auroral arc,” J. Geophys. Res. 103, 29383-29391 (1998).
[CrossRef]

M. J. Kosch, T. Hagfors, and E. Nielsen, “A new Digital All-Sky Imager experiment for optical auroral studies in conjunction with the STARE coherent radar system,” Rev. Sci. Instrum. 69, 578-584 (1998).
[CrossRef]

1997 (1)

1996 (1)

1994 (1)

1992 (1)

1991 (1)

G. Hough and M. W. J. Scourfield, “WAND auroral imager for SANAE,” S. Afr. J. Antarct. Res. 21, 113 (1991).

Andreic, Z.

Eather, R. H.

C. Lance and R. H. Eather, “HAARP Imager,” Report ADA- 277469 (Defense Technical Information Center, 1993).

Garcia, F. J.

Greenleaf, A. R.

A. R. Greenleaf, Photographic Optics (MacMillan, 1950).

Hagfors, T.

M. J. Kosch, T. Hagfors, and E. Nielsen, “A new Digital All-Sky Imager experiment for optical auroral studies in conjunction with the STARE coherent radar system,” Rev. Sci. Instrum. 69, 578-584 (1998).
[CrossRef]

Hough, G.

G. Hough and M. W. J. Scourfield, “WAND auroral imager for SANAE,” S. Afr. J. Antarct. Res. 21, 113 (1991).

G. Hough, “Evolution of periodicity and scale length in auroral dynamics,” Ph.D. thesis (University of Natal, 1994).

Kelley, M. C.

Kosch, M. J.

M. J. Kosch, T. Hagfors, and E. Nielsen, “A new Digital All-Sky Imager experiment for optical auroral studies in conjunction with the STARE coherent radar system,” Rev. Sci. Instrum. 69, 578-584 (1998).
[CrossRef]

M. J. Kosch, M. W. J. Scourfield, and E. Nielsen, “A self-consistent explanation for a plasma flow vortex associated with the brightening of an auroral arc,” J. Geophys. Res. 103, 29383-29391 (1998).
[CrossRef]

Lance, C.

C. Lance and R. H. Eather, “HAARP Imager,” Report ADA- 277469 (Defense Technical Information Center, 1993).

Nielsen, E.

M. J. Kosch, T. Hagfors, and E. Nielsen, “A new Digital All-Sky Imager experiment for optical auroral studies in conjunction with the STARE coherent radar system,” Rev. Sci. Instrum. 69, 578-584 (1998).
[CrossRef]

M. J. Kosch, M. W. J. Scourfield, and E. Nielsen, “A self-consistent explanation for a plasma flow vortex associated with the brightening of an auroral arc,” J. Geophys. Res. 103, 29383-29391 (1998).
[CrossRef]

Radic, N.

Scourfield, M. W. J.

M. J. Kosch, M. W. J. Scourfield, and E. Nielsen, “A self-consistent explanation for a plasma flow vortex associated with the brightening of an auroral arc,” J. Geophys. Res. 103, 29383-29391 (1998).
[CrossRef]

G. Hough and M. W. J. Scourfield, “WAND auroral imager for SANAE,” S. Afr. J. Antarct. Res. 21, 113 (1991).

Stormer, C.

C. Stormer, The Polar Aurora (Oxford University, 1955).

Taylor, M. J.

Appl. Opt. (4)

J. Geophys. Res. (1)

M. J. Kosch, M. W. J. Scourfield, and E. Nielsen, “A self-consistent explanation for a plasma flow vortex associated with the brightening of an auroral arc,” J. Geophys. Res. 103, 29383-29391 (1998).
[CrossRef]

Rev. Sci. Instrum. (1)

M. J. Kosch, T. Hagfors, and E. Nielsen, “A new Digital All-Sky Imager experiment for optical auroral studies in conjunction with the STARE coherent radar system,” Rev. Sci. Instrum. 69, 578-584 (1998).
[CrossRef]

S. Afr. J. Antarct. Res. (1)

G. Hough and M. W. J. Scourfield, “WAND auroral imager for SANAE,” S. Afr. J. Antarct. Res. 21, 113 (1991).

Other (4)

A. R. Greenleaf, Photographic Optics (MacMillan, 1950).

G. Hough, “Evolution of periodicity and scale length in auroral dynamics,” Ph.D. thesis (University of Natal, 1994).

C. Lance and R. H. Eather, “HAARP Imager,” Report ADA- 277469 (Defense Technical Information Center, 1993).

C. Stormer, The Polar Aurora (Oxford University, 1955).

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