# Fast Fourier Transform Telescope

Fast Fourier Transform Telescope is Tegmark and Zaldarriaga's name for a design for an all-digital synthetic-aperture telescope.wikipedia

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### Astronomical interferometer

**astronomical interferometryinterferometerinterferometry**

He noted that by using an array of small instruments it would be possible to measure the diameter of a star with the same precision as a single telescope which was as large as the whole array — a technique which later became known as astronomical interferometry.

Max Tegmark and Matias Zaldarriaga have proposed the Fast Fourier Transform Telescope which would rely on extensive computer power rather than standard lenses and mirrors.

### List of telescope types

**ground-based telescopestationary telescopetypes**

* Fast Fourier Transform Telescope

### Max Tegmark

**TegmarkMax Erik Tegmark**

Fast Fourier Transform Telescope is Tegmark and Zaldarriaga's name for a design for an all-digital synthetic-aperture telescope.

### Matias Zaldarriaga

**Zaldarriaga**

Fast Fourier Transform Telescope is Tegmark and Zaldarriaga's name for a design for an all-digital synthetic-aperture telescope.

### Digital data

**digitaldigital informationdigitally**

Fast Fourier Transform Telescope is Tegmark and Zaldarriaga's name for a design for an all-digital synthetic-aperture telescope.

### Aperture synthesis

**synthetic apertureaperture synthesis imaginginterferometric imaging**

### Telescope

**telescopestelescopicspyglass**

Fast Fourier Transform Telescope is Tegmark and Zaldarriaga's name for a design for an all-digital synthetic-aperture telescope. In 1868, Hippolyte Fizeau realized that the lenses and mirrors in a telescope perform a physical approximation of a Fourier transform.

### Interferometry

**interferometerinterferometricoptical interferometry**

It is a type of interferometer designed to be cheaper than standard telescope interferometers currently in use.

### Hippolyte Fizeau

**FizeauArmand FizeauArmand Hippolyte Louis Fizeau**

In 1868, Hippolyte Fizeau realized that the lenses and mirrors in a telescope perform a physical approximation of a Fourier transform.

### Fourier transform

**continuous Fourier transformFourierFourier transforms**

In 1868, Hippolyte Fizeau realized that the lenses and mirrors in a telescope perform a physical approximation of a Fourier transform.

### Radio telescope

**radio telescopesradiotelescoperadio-telescope**

Building radio telescopes this way should become feasible within a few years if Moore's law continues to hold.

### Moore's law

**Moore’s Lawcomputational powermass-produced**

Building radio telescopes this way should become feasible within a few years if Moore's law continues to hold.

### Optical telescope

**telescopetelescopesoptical**

Eventually optical telescopes could also be built this way.

### Radar

**radar stationradarsradar system**

This technique is already being used in radar applications.

### Crab Nebula

**Crab1952Crab Pulsar**

This paper refers to an earlier telescope design from 1993 which took direct images of the Crab nebula at radio wavelengths using an eight-by-eight-pixel two-dimensional spatial FFT processor.

### Pixel

**megapixelpxMP**

This paper refers to an earlier telescope design from 1993 which took direct images of the Crab nebula at radio wavelengths using an eight-by-eight-pixel two-dimensional spatial FFT processor.

### Interferometric synthetic-aperture radar

**InSARinterferometric synthetic aperture radarSAR interferometry**

### Inverse synthetic-aperture radar

**Inverse synthetic aperture radarinverse SARISAR**

### Synthetic-aperture radar

**synthetic aperture radarSARsynthetic aperture**

### History of the telescope

**History of telescopestelescopeInvention of the telescope**

In 2008, Max Tegmark and Matias Zaldarriaga proposed a "Fast Fourier Transform Telescope" design in which the lenses and mirrors could be dispensed with altogether when computers become fast enough to perform all the necessary transforms.