Main.BobSimon 03 Nov 2008 TKFPA29SEP08 Ward, Simon Testing the KFPA receiver in the lab Setup: Cold KFPA 1 pixel receiver with 300k waveguide load on feed window ...
Comments Supporting Box Rotation Capabilities Comments Against Box Rotation Capabilities * Most of the effects of box rotation can be accomplished with intel...
Conceptual Design Review CDR Final Report: CDR Panel Final Report Response to Final Report: Email to Committee Members Panel Members Name Affiliation ...
Final Report: kfpa_cdr_finalreport2.pdf: February 11, 2009 Final Response: KFPA Critical Design Review Response.pdf :February 26, 2009. Dates: January 30 and 31...
!Engineering Planning Table of Contents Seven Pixel Tests * Post Commissioning Tests * Commissioning Stability Tests March 26 and April 19, 2010: 800 MHz...
Monitor and Control Hardware Introduction Typical GBT receivers, those with four or fewer pixels, utilize a monitor and control system based on the VLBA Standar...
A seven feed, dual polarized K band focal plane array receiver is proposed for the Green Bank Telescope. This instrument will enhance the scientific capabilities ...
KFPA Beam Spacing * K band hexagonal feed spacing in the focal plane and on the sky: * The above figure shows the hexgonal close packed spacing used ...
Sampling rates and Efficiencies The processing of the sampled data requires a limit on the data rates. The first device in this process is the analog to digital ...
Combines the information from the various M C FITS files into a data stream that the pipeline can be used. At the moment, the online sdfits filler does this task ...
This page documents work on converting GBT sdfits file to the format used by the ACSIS gridder. The ACSIS gridder is an application in starlink. Relevant docu...
A design for the data pipeline for the prototype GBT K Band Focal Plane Array Introduction See the KFPA wiki for more information on the GBT K Band Focal Plane A...
A design for the data pipeline for the proposed GBT K Band Focal Plane Array Introduction See the KFPA wiki for more information on the proposed GBT K Band Foca...
Scratch space for thoughts on the KFPA data pipeline and processing issues. I am attempting to turn this into a KFPA data pipeline design document prior to the re...
Please feel free to edit this page and add any topics for discussion during this workshop. Eventually these items will be folded into the agenda. Visit the Main...
KFPA Data Analysis Meeting June 23 25, 2008 Purpose and Goals This is the first face to face meeting concerning the KFPA data pipeline and data analysis nee...
Makes use of the "cal" switching present in the data. If the CAL value does not switch between T and F an equal number of times, this step does nothing. In the c...
KFPA Pipeline Weekly Meeting Agenda Next meeting Wednesday, June 16 2010 at 1:00pm in GB137 and CV331. 2010 06 16 1. Final review of agenda for Jun. 17 pipeli...
Nyquist Sampling at K band * \text{Magnification is 3, giving f/D of 3 x 0.6 = 1.9.} * \text{ Nyquist sampling (Voltage) of focal plane FWHM spacing requir...
K band FPGA Single Pixel Test Report for 2008 December 28 These single pixel tests compared the (K1) performance with the current GBT K band receiver (K0). The ob...
KFPA Automatic Balance of IF path Modification Request #? (C04 2009) 1. Introduction The basic observing modes for the KFPA are similar to those already used ...
KFPA LO and IF chain calculation requirements Modification Request #7 (C04 2009) 1. Introduction In order for the observers, engineers and commissioners to e...
KFPA Pipeline Calibration and Imaging Review NRAO will hold an internal review of the KFPA imaging pipeline on Thursday June 17, starting with the science lunch d...
KFPA Astrid Pointing Modes Modification Request #? (C04 2009) 1. Introduction Effective use of the KFPA requires regular peaking on a bright radio source and ...
Main.StevenWhite 27 Aug 2007 3.3 This task describes the assembling of all components for a seven feed receiver. This includes the mounting and cabling of all i...
Main.StevenWhite 07 Jun 2007 1.2 Mechanical Design and Specs #8211; The observatory's experience with ALMA, as well as the experience of other institutions who ...
Some open issues related to the mechanical design * For the 7 pixel there are 4 G 10 standoffs per pixel. 61 pixels will need a different arrangement. * A ...
Main.BobSimon 11 Jan 2008 * Receiver room: * GBT turret: * K band Pamtech cryo isolator, picture 01 * K band Pamtech cryo isolator, picture 02: * K band f...
Observations in the K band frequency spectrum (18 26.5 GHz) of extended sources in the spectral line require inordinate amounts of telescope time with a single pi...
The Resource estimates are driven by the target milestones for this project. Overall, we'd like this project to lead to a pipeline review. The goal of the pipelin...
Random Comments Put suggestions / ideas here if you cannot think of anywhere else to put them... * I understand that the dewar will be designed to hold 61 pixe...
Software for the K band Focal Plane Array (KFPA) GBT software improvements and extensions are a critical part of the KFPA project, which will enable important new...
* External Committee Members * Internal Working Group * 2007 September (.pdf) * 2007 April (.pdf) * Exact frequency coverage of the front end. Is this o...
September 28th 2007 Focal Plane Array Discussion Meeting Overview The GBT is a superb telescope with excellent performance at frequencies up to 50 GHz (wavelengt...
First K band Focal Plane Array Pixel Testing The first step in developing the full 61 pixel array is prototyping the first pixel hardware. The development of the ...
Main.BobSimon 04 Nov 2008 Date: 10/28/2008, Simon From Langston's GBT observations ,we are trying to understand why Glen reported higher than expected system temp...
First Pixel tests with Feed at offset locations On October 6, 2008 from midnight to 8:00 AM, Steve White, Bob Simon and Glen Langston ran tests of the first pixel...
Thermal Gaps: Two options for thermal gaps are the annular choke and the photonic crystal joint (PCJ). The EVLA annular choke and a PCJ were modeled with the K b...
Useful Old KFPA Links and Documentation * GBT K band Beam Spacing (Receiver Independent) * Actual KFPA Feed and Pointing Offsets * LNA and Receiver Noise...
K band Phased Array Feed This wiki was co opted from the previous KbandFPA project. To find those links, go to the Old Web Home Overview The intent of this web i...