We have developed a new family of imaging spectrometer designs that combine the imaging power of two-element telescopes with the aberration control of first-generation holographic gratings. The resulting optical designs provide high spatial resolution over modest fields of view at selectable wavelengths. These all-reflective designs are particularly suited for narrow-band imaging below 1050 Å, the wavelength below which there are no transmitting materials in the UV. We have developed designs to efficiently map the spatial distribution of UV-emitting material. This mapping capability is absent in current and future astronomical instruments but is crucial to the understanding of the nature of a variety of astrophysical phenomena. Although our examples focus on UV wavelengths, the design concept is applicable to any wavelength.
© 2001 Optical Society of America
[Optical Society of America ]
Erik Wilkinson, Rémy Indebetouw, and Matthew Beasley, "Technique for Narrow-Band Imaging in the Far Ultraviolet Based on Aberration-Corrected Holographic Gratings," Appl. Opt. 40, 3244-3255 (2001)