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By offsetting the SCA columns, the Field of View layout follows the natural annular curve of an off-axis TMA optimized field. Short answer: Yes, off axis aberration magic. Longer answer: The following journal article, "Optical design and predicted performance of the WFIRST phase-b imaging optics assembly and wide field instrument" (Bert et al., ...


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A reflection grating reflects its dispersed light away from the beam of the incoming light; a transmission grating or prism refracts it off at an angle to the incoming light as well. In both cases, you have to build the final part of the spectrograph (the imager with its sensor) at an angle to the optical axis of the instrument. This means that if you want ...


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I will have to look for a source for this, but basically the best way to search for small NEOs is to use image at thermal infrared wavelengths. At circa 1 AU the Sun illuminates them with about 1600 watts per square meter. They are generally quite dark, which makes them hard to spot looking at reflected sunlight, and since they are against a background of ...


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Space telescopes are expensive. However they have advantages "Permanent" night time, often they use a solar shade to stay dark to observe ambient light Also the biggest advantage is no atmosphere means no atmospheric distortion But the benefits come at a price. A amateur astronomer can build a telescope for money, homemade setups in the 10-100 ...


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How much are the benefits of installing a telescope in orbit? In the past the benefits have been astronomical! Sorry, I couldn't help it. ...our atmosphere acts like a protective blanket letting only some light through while blocking others... For visible light astronomy, much of the light above the Earth reaches the ground, but astronomical seeing has ...


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