AstraLux - the Calar Alto 2.2-m telescope Lucky Imaging camera

Abstract

AstraLux is a Lucky Imaging camera for the Calar Alto 2.2-m telescope, based on an electron-multiplying high speed CCD. By selecting only the best 1-10% of several thousand short exposure frames, AstraLux provides nearly diffraction limited imaging capabilities in the SDSS i' and z' filters over a field of view of 24x24 arcseconds. By choosing commercially available components wherever possible, the instrument could be built in short time and at comparably low cost. We briefly present the instrument design, the data reduction pipeline, and summarise the performance and characteristics

6 pages, 5 figures, to appear in proceedings of "The Universe under the Microscope - Astrophysics at High Angular Resolution", published in the Journal of Physics: Conference Series by Institute of Physics Publishing

References in corpus (6)

• Drizzle: A Method for the Linear Reconstruction of Undersampled Images
• Lucky Imaging: High Angular Resolution Imaging in the Visible from the Ground
• Sub-electron read noise at MHz pixel rates
• The night-sky at the Calar Alto Observatory
• Diffraction-limited 800nm imaging with the 2.56m Nordic Optical Telescope
• Diffraction-limited CCD imaging with faint reference stars

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• The TESS-Keck Survey. XI. Mass Measurements for Four Transiting sub-Neptunes orbiting K dwarf TOI-1246