Upgrading the Haystack radio telescope for operation at 115 GHz

Ingalls, R. P.; Antebi, Joseph; Ball, John A.; Barvainis, Richard; Cannon, J.F.; Carter, J.C.; Charpentier, P.; Corey, B. E.; Crowley, Joseph; Dudevoir, Kevin A.; Gregory, M.J.; Kan, Frank W.; Milner, Steve; Rogers, A. E. E.; Salah, J. E.; Zarghamee, Mehdi S.

doi:10.1109/5.284741

Cited by 22 publications

(8 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4. Equation (12) shows how to convert the tip, tilt, and piston to the actuator number of rotations using…”

Section: Dish Measurement With Global Reference Framementioning

confidence: 99%

See 1 more Smart Citation

Systematic Radio Telescope Alignment Using Portable Fringe Projection Profilometry

Berkson,

Hyatt,

Julicher

et al. 2024

Nanomanuf Metrol

View full text Add to dashboard Cite

In 2019, the Event Horizon Telescope (EHT) released the first-ever image of a black hole event horizon. Astronomers are now aiming for higher angular resolutions of distant targets, like black holes, to understand more about the fundamental laws of gravity that govern our universe. To achieve this higher resolution and increased sensitivity, larger radio telescopes are needed to operate at higher frequencies and in larger quantities. Projects like the next-generation Very Large Array (ngVLA) and the Square-Kilometer Array (SKA) require building hundreds of telescopes with diameters greater than 10 ms over the next decade. This has a twofold effect. Radio telescope surfaces need to be more accurate to operate at higher frequencies, and the logistics involved in maintaining a radio telescope need to be simplified to support them properly in large quantities. Both of these problems can be solved with improved methods for surface metrology that are faster and more accurate with a higher resolution. This leads to faster and more accurate panel alignment and, therefore, a more productive observatory. In this paper, we present the use of binocular fringe projection profilometry as a solution to this problem and demonstrate it by aligning two panels on a 3-m radio telescope dish. The measurement takes only 10 min and directly delivers feedback on the tip, tilt, and piston of each panel to create the ideal reflector shape.

show abstract

“…4. Equation (12) shows how to convert the tip, tilt, and piston to the actuator number of rotations using…”

Section: Dish Measurement With Global Reference Framementioning

confidence: 99%

“…holography [11][12][13][14], and laser trackers or laser trusses [10,[15][16][17]. Oftentimes, a combination of methods is used [10,[18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Systematic Radio Telescope Alignment Using Portable Fringe Projection Profilometry

Berkson,

Hyatt,

Julicher

et al. 2024

Nanomanuf Metrol

View full text Add to dashboard Cite

show abstract

“…In addition, the antenna structure can also be designed with equal fexibility, that is, it is necessary to optimize the topology of the antenna structure to ensure the consistency of its node deformation. Equal fexibility design can be seen in antennas such as 37 m HUSIR [94], 50 m LMT [95], 64 m SRT [96], and 110 m Efelsberg [97]. Meanwhile, Reference [98] also uses an equal fexibility design to optimize the support structure of the QTT 110 m antenna refector that is to be constructed.…”

Section: Structural Innovation Design Based On Electromechanical Coup...mentioning

confidence: 99%

Progress and Challenges in Electromechanical Coupling of Radio Telescopes

Yan

Xue

et al. 2022

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

Radio astronomy is a discipline of dynamics and wonders. The vast universe has many secrets to unravel. As one of the important facilities in this discipline, radio telescopes play a key role in collecting astronomical data and unraveling mysteries. With the demand of radio astronomy for a higher frequency, wider bandwidth, higher gain, and higher pointing accuracy, the aperture of the radio telescope is gradually increasing, and its electrical performance and structure have become tightly coupled. Therefore, how to ensure the stable and efficient operation of the telescope for the long-term operation has become the urgent demand for large aperture high-performance radio telescopes. Therefore, this paper firstly makes a comparison of the overall condition of large radio telescopes in nearly a decade that are both constructed and operated, including the progress of radio telescopes that are being constructed and the planning for construction. Then, systematically summarized the latest research progress of electromechanical coupling technology from 3 aspects of connotation and application of electromechanical coupling, and performance guarantee under slowly varying load and performance guarantee under rapidly varying load from the perspectives of design, manufacturing, and observation operating. Lastly, the future research direction of electromechanical coupling technology is pointed out according to the development trend of radio astronomy.

show abstract

“…Various methods were developed over the past few decades. The methods available elsewhere in the literature for analyzing the dielectric radome are: (i) the Ray Tracing Technique (RTT) [1,2,10] which is the most popular one, (ii) the (Single) Plane Wave Spectrum-Surface Integral Technique [11,12], (iii) the Physical Optics (PO) method and Dielectric Physical Optics (DPO) technique [13], (vi) the Moment Method (MM) or Method of Moment (MoM) [13], (v) the Finite Element Method (FEM) [14,15], (iv) a hybrid method that combines the Green's function approach that accounts for the radome and the Method of Regularization (MoR) for solving the scattering from reflector accurately was proposed [16].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Radiation Characteristics of an Open Circular Waveguide Asymmetrically Covered by a Dielectric Layered Hemi-Spherical Radome

Leong¹,

Li²,

Ma³

et al. 2001

PIER

View full text Add to dashboard Cite

In this paper, the radiation characteristics of an open circular waveguide asymmetrically covered by a layered dielectric hemi-spherical radome are analyzed. On the waveguide opening, the dominant TE 11 wave of the circular waveguide is assumed. The technique of dyadic Green's function is applied to obtain the radiated electromagnetic fields due the circular aperture. Huygens' equivalence principle and the image theory are utilized to simplify the problem. The translational addition theorems of spherical vector wave functions are also employed to make the mathematical representation of the radiated fields compact. Both the exact formulation in the near (radiating-field) zone and the approximate expressions in the far (Fraunhofer) zone of the radiated fields are obtained. Numerical computations are implemented to show the effects of the off-centered source feed asymmetrically covered by the hemi-spherical dielectric radome. 1 Introduction 2 Statement of the Problem 3 Formulation of EM Fields 4 Numerical Results 4.

show abstract

Upgrading the Haystack radio telescope for operation at 115 GHz

Cited by 22 publications

References 7 publications

Systematic Radio Telescope Alignment Using Portable Fringe Projection Profilometry

Systematic Radio Telescope Alignment Using Portable Fringe Projection Profilometry

Progress and Challenges in Electromechanical Coupling of Radio Telescopes

Analysis of Radiation Characteristics of an Open Circular Waveguide Asymmetrically Covered by a Dielectric Layered Hemi-Spherical Radome

Contact Info

Product

Resources

About