| Autor: |
Brandon Arritt, R. Barclay, Theodore W. Hilgeman, Christopher Holt, Shobita Satyapal, Jonathan L. Kuhn, D. Amato, Vanessa Harvey, Richard K. Barry, Lawrence Lesyna, Nils J. Fonneland, Gary L. Brown, Matthew A. Greenhouse |
| Rok vydání: |
2000 |
| Předmět: |
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| Zdroj: |
SPIE Proceedings. |
| ISSN: |
0277-786X |
| DOI: |
10.1117/12.393959 |
| Popis: |
We discuss work in progress on a near-infrared tunable bandpass filter for the Goddard baseline wide field camera concept of the Next Generation Space Telescope (NGST) Integrated Science Instrument Module (ISIM). This filter, the Demonstration Unit for Low Order Cryogenic Etalon (DULCE), is designed to demonstrate a high efficiency scanning Fabry-Perot etalon operating in interference orders 1 - 4 at 30K with a high stability DSP based servo control system. DULCE is currently the only available tunable filter for lower order cryogenic operation in the near infrared. In this application, scanning etalons will illuminate the focal plane arrays with a single order of interference to enable wide field lower resolution hyperspectral imaging over a wide range of redshifts. We discuss why tunable filters are an important instrument component in future space-based observatories. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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