File:Altair Optical Bench Alignment (gemini-altair-alignment).tiff
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Altair_Optical_Bench_Alignment_(gemini-altair-alignment).tiff (640 × 420 pixels, file size: 568 KB, MIME type: image/tiff)
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ALTAIR (ALTtitude congugate Adaptive optics for the InfraRed) is the facility natural/laser guide star adaptive optics system of the Gemini North telescope. It can feed a corrected beam to Gemini instruments NIRI and NIFS.
Summary
[edit]DescriptionAltair Optical Bench Alignment (gemini-altair-alignment).tiff |
English: ALTAIR (ALTtitude congugate Adaptive optics for the InfraRed) is the facility natural/laser guide star adaptive optics system of the Gemini North telescope. It can feed a corrected beam to Gemini instruments NIRI and NIFS. Deploying ALTAIR is "transparent" for the science instrument, as it reproduces the telescope focal ratio (f/16), pupil size and pupil position. Technical Details: ALTAIR uses a 177 actuator deformable mirror (DM) and a separate tip-tilt mirror (TTM) to correct atmospheric turbulence. It is equipped with a Shack-Hartmann wave-front sensor (WFS) that uses the visible light to measure the turbulent incident wavefront. |
Date | 16 October 2002 (upload date) |
Source | Altair Optical Bench Alignment |
Author | International Gemini Observatory |
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current | 21:34, 27 October 2023 | ![]() | 640 × 420 (568 KB) | OptimusPrimeBot (talk | contribs) | #Spacemedia - Upload of https://noirlab.edu/public/media/archives/images/original/gemini-altair-alignment.tif via Commons:Spacemedia |
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Image title | ALTAIR (ALTtitude congugate Adaptive optics for the InfraRed) is the facility natural/laser guide star adaptive optics system of the Gemini North telescope. It can feed a corrected beam to Gemini instruments NIRI and NIFS. Deploying ALTAIR is "transparent" for the science instrument, as it reproduces the telescope focal ratio (f/16), pupil size and pupil position. Technical Details: ALTAIR uses a 177 actuator deformable mirror (DM) and a separate tip-tilt mirror (TTM) to correct atmospheric turbulence. It is equipped with a Shack-Hartmann wave-front sensor (WFS) that uses the visible light to measure the turbulent incident wavefront. |
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Camera manufacturer | NIKON CORPORATION |
Camera model | NIKON D1X |
Exposure time | 1/60 sec (0.016666666666667) |
F-number | f/4.8 |
Date and time of data generation | 14:02, 16 October 2002 |
Lens focal length | 14 mm |
Width | 640 px |
Height | 420 px |
Bits per component |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 136 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CC 2019 (Windows) |
File change date and time | 22:33, 15 December 2019 |
Exposure Program | Normal program |
Exif version | 2.1 |
Date and time of digitizing | 14:02, 16 October 2002 |
Meaning of each component |
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Image compression mode | 4 |
APEX shutter speed | 5.906891 |
APEX aperture | 4.526069 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Pattern |
DateTimeOriginal subseconds | 46 |
Supported Flashpix version | 1 |
Color space | sRGB |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Scene type | A directly photographed image |