[Findlay at NRAO dedication, 1957]
Findlay at NRAO dedication, 1957 (NRAO/AUI/NSF image)


[Calibration horn antenna, 1967]
Calibration horn antenna, 1967. (NRAO/AUI/NSF image)


[140ft groundbreaking, 1958, Findlay on right]
Findlay (right) at 140ft ground-breaking, 1958. (NRAO/AUI/NSF image)


[300ft telescope]
300ft telescope. (NRAO/AUI/NSF image)


[Findlay, Struve, Heeschen, 1960]
John W. Findlay, Otto Struve, David S. Heeschen, 1960. (NRAO/AUI/NSF image)


[65m telescope drawing]
65m telescope drawing. (NRAO/AUI/NSF image)


[Findlay in late 1950s]
Findlay, late 1950s. (NRAO/AUI/NSF image)


[Fabrication of 12m surface]
Fabricating new 12m surface, ca. 1983. (NRAO/AUI/NSF image)


NATIONAL RADIO ASTRONOMY OBSERVATORY ARCHIVES

Papers of John W. Findlay: Item listing

NRAO Instruments and Projects: Calibration Horn Antenna

ItemTypeCorrespondence
AuthorHein Hvatum
RecipientJohn Findlay
Date of corresp11/3/1959
SubjectLittle Big Horn
Notescarbon copy with original handwritten plot attached
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 1, section 1: previous work
Start Date1968
Notesreprints and preprints. NB for LBH notebook description - some notebook sections contain occasional brief correspondence between Findlay and A. Penzias
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 1, section 2: front end
Start Date1968
Notesnotes, diagrams
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 1, section 3: back end
Start Date1968
Notesinstruction manual for NRAO standard receiver; EDIR 82
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 1, section 4: data recording and reduction
Start Date1968
Notesnotes, calculations, reprints
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 1, section 5: horn pattern and gain
Start Date1968
Notesnotes, calculations, NRL report 4433
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 1, section 6: 960 MHz map
Start Date1968
Notesfoldout map pasted to divider
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 2, section 1: diary of works
Start Date1968
End Date1969
Notesnotes, diagrams, calculations, and related materials
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 2, section 2: VSWR measures
Start Date1968
End Date1969
Notes9 photos of recorded charts with annotations, further notes
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 2, section 3: R. Carpenter, summer 1969
Start Date1969
Notesreport, calculations
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 3, section 1: A. Penzias
Start Date1969
Notesnote from AP to JWF, Penzias preprints
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 3, section 2: calibration
Start Date1969
Notesinternal and external technical reports, calculations, reprints, IEEE std, instrument catalogs
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 3, section 3: horn parabola
Start Date1969
Notescalculations, diagrams, memos, reprints
 [Range 6A Box 3]

ItemTypeNotes and papers
TitleLBH notebook 4, folder 1
Start Date1969
End Date1970
Notesnotes, calculations, diagrams, plots, reprints, polyethelyne samples of LBH cover
 [Range 6A Box 4]

ItemTypeNotes and papers
TitleLBH notebook 4, folder 2
Start Date1969
End Date1970
Notesnotes, calculations, diagrams, plots, reprints
 [Range 6A Box 4]

ItemTypeNotes and papers
TitleLBH notebook 5, folder 1
Start Date1971
Notesnotes, calculations, diagrams, plots
 [Range 6A Box 4]

ItemTypeNotes and papers
TitleLBH notebook 5, folder 2
Start Date1971
Notesnotes, calculations, diagrams, plots
 [Range 6A Box 4]

ItemTypeNotes and papers
TitleLBH notebook 6: data reduction; section 1: reduced data
Start Date1968
End Date1970
Notes2 folders
 [Range 6A Box 4]

ItemTypeNotes and papers
TitleLBH notebook 6: data reduction; section 2: data reduction forms
Start Date1968
End Date1970
Notesblank forms
 [Range 6A Box 4]

ItemTypeNotes and papers
TitleLBH notebook 6: data reduction; section 3: hydrogen results
Start Date1968
End Date1970
 [Range 6A Box 4]

ItemTypeNotes and papers
TitleLBH design
Start Date1959
End Date1963
NotesTitle from Findlay folder label; many items undated
 [Range 6A Box 5]

ItemTypeNotes and papers
TitleLBH observations - I
Start Date1959?
NotesFindlay's folder title. Folder includes reprints on microwave measurements, Cas A data, carbon of typescript of Findlay manuscript "The measurement of the flux density from the source Cas A"
 [Range 6A Box 5]

ItemTypeData log book
TitleLittle Big Horn log
Start Date10/8/1959
End Date2/9/1964
Notes1987 annotations by Findlay in red; chart pasted on first page: "First record of Cass, October 9, 1959"; some notes and calculations towards end of volume following blank pages, some loose pages of notes inserted
 [Range 6A Box 5]

ItemTypeData log book
TitleLittle Big Horn log
Start Date10/7/1959
End Date12/12/1960
NotesDewey Ross' name inside front cover; appears to be all his notes
 [Range 6A Box 5]

ItemTypeData log book
Title[Daily record of LBH measurements]
Start Date4/8/1960
End Date9/12/1972
Notes1987 annotations by Findlay in red
 [Range 6A Box 5]

ItemTypeNotes and papers
TitleA short manual for operating and observing at the Little Big Horn
Notesundated; no author
 [Range 6A Box 5]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleHorn design - August 1958; Horn loss; Old calculations [contents of manilla envelope]
Start Date8/1958
 [Range 6A Box 5]

ItemTypeNotes and papers
TitleLBH paper
Start Date1963
End Date1964
NotesTitle from Findlay folder label; notes, data, etc for J.W.W. Findlay, H. Hvatum, W.B. Waltman, "An absolute flux-density measurement of Cassiopeia A at 1440 MHz", ApJ 141, 873, 1965.
 [Range 6A Box 5]

ItemTypeNotes and papers
TitleS.W.R. measurements on LBH for frequencies 1.0 - 1.6 GHz in 100 MHz steps
Start Date6/26/1968
End Date8/16/1968
NotesTitle of folder from folder tab annotation; many of the notes pages initialed by F.X.W. [F.X. Witkowski; summer student, June-Aug 1968]; front of folder annotated by Findlay as "1968 FXW - Cals, SWR, etc" [SWR = standing wave ratio]
 [Range 6A Box 5]

ItemTypeNotes and papers
TitleComparison of Penzias N.T. [noise tube] and LBH noise tube, folder #1
Start Date8/1969
End Date11/1969
NotesTitle from Findlay notebook label
 [Range 6A Box 5]

ItemTypeNotes and papers
TitleComparison of Penzias N.T. [noise tube] and LBH noise tube, folder #2: LBH records Nov 12-18 1969, measures of A. Penzias noise sources
Start Date11/1969
NotesTitles from Findlay notebook label and envelope containing records
 [Range 6A Box 5]

ItemTypeData log book
TitleLittle Big Horn log
Start Date1/23/1964
End Date8/27/1964
NotesBound vol has "Little Big Horn" printed on front cover. Some damage on edge of front cover (mice?). Oversize; filed with CHA box 3
 [Range 6A Box 5]

ItemTypeNotes and papers
TitleLBH data reduction, July 1972, folder 1: data reduction
Start Date7/1972
NotesTitle from Findlay notebook label and dividers
 [Range 6A Box 6]

ItemTypeNotes and papers
TitleLBH data reduction, July 1972, folder 2: trial results
Start Date7/1972
NotesTitle from Findlay notebook label and dividers
 [Range 6A Box 6]

ItemTypeNotes and papers
TitleLBH data reduction, July 1972, folder 3: notes, etc
Start Date7/1972
NotesTitle from Findlay notebook label and dividers
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleLBH data reduction computer programs [notes and calculations contained in 3-ring notebook]
Start Date7/1972
End Date6/1966
NotesTitle from notebook label. Many handwritten calculations; not all dated; includes Cas A calculations; some calculations annotated [later?] in red
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleIs Cas A Also an Irregular Variable
Start Date1974?
NotesUnpublished paper; filed with Dent et al reprint
 [Range 6A Box 6]

ItemTypeNotes and papers
Title820 MHz paper (1974 notebook): section 1: 820 MHz map in RA and dec (1950)
Start Date1974?
Noteslarge folded map (58"x60"); map left folded - brittle and disintegrating on folds
 [Range 6A Box 6]

ItemTypeNotes and papers
Title820 MHz paper (1974 notebook): section 2: result summaries
Start Date1974?
Noteshandwritten chart and notes
 [Range 6A Box 6]

ItemTypeNotes and papers
Title820 MHz paper (1974 notebook): section 3: other work
Start Date1974?
Notesnotes from J.W.M. Baars
 [Range 6A Box 6]

ItemTypeNotes and papers
Title820 MHz paper (1974 notebook): section 4: horn beam gain/loss
Start Date1974?
Notesnotes, calculations, diagrams, horn beam plot at 820 MHz in RA and dec (1950)
 [Range 6A Box 6]

ItemTypeNotes and papers
Title820 MHz paper (1974 notebook): section 5: convolution
Start Date1974?
Notesnotes and calculations
 [Range 6A Box 6]

ItemTypeNotes and papers
Title820 MHz paper (1974 notebook): section 6: my sky
Start Date1974?
Notesnotes, plots, calculations
 [Range 6A Box 6]

ItemTypeNotes and papers
Title820 MHz paper (1974 notebook): section 7: Spoelstra sky
Start Date1974?
Notesnotes, plots, correspondence between Findlay and Baars
 [Range 6A Box 6]

ItemTypeNotes and papers
TitleFirst fringes with the Calibration Horn Interferometer
Start Date6/20/1979
NotesSigned and labeled chart
 [Range 6A Box 6]

ItemTypeNotes and papers
TitleThe interferometer for Cas A, August 1979. Fringe fitting, source size, results, summary, adjusting delays
Start Date8/1979
NotesTitle from Findlay notebook label
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleThe calibration horn antenna [multiple draft versions]
Start Date1986?
End Date1990
NotesOriginal hand-written draft undated; draft versions dated April 1987, March 15 1989, January 20 1990. All with comments and annotations
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleWork to complete the LBH paper
Start Date1989
Notesnotes and calculations
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleRepeat the cal horn interferometer
Start Date8/1978
NotesHandwritten notes
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleCalibration horn interferometer [note to Cam Wade on sheet 1]
Start Date1977
NotesHandwritten notes, with note to Cam Wade at top of sheet 1
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorCampbell Wade
Title[Cam Wade's response to Findlay's 1977 notes and query]
Start Date7/8/1977
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleCal horn interferometer
Start Date1975?
NotesHandwritten notes, dated after 1975 March 18 (printout date on verso of handwritten sheets)
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleHorn C of G [calculation of gain]
Start Date3/4/1975
NotesHandwritten notes, with note to Sidney Smith at top of sheet 1
 [Range 6A Box 6]

ItemTypeCorrespondence
AuthorJohn W. Findlay
RecipientG. Peery
Date of corresp3/3/1975
SubjectStandard gain horn
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleS. G. [standard gain] horn - Mark II
Start Date3/3/1975
Notes2 extra photocopies of drawing
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleS. G. [standard gain] horn A(eff) [approx =] 1 sq m at 1.415 GHz
Start Date2/13/1975
NotesSome calculated numbers have later corrections in red
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleStandard gain horn
Start Date1/1975
Notessingle hand drawn sheet
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleHorn [approx equal] 1 sq m
Start Date1974?
Notessingle handwritten sheet
 [Range 6A Box 6]

ItemTypeNotes and papers
AuthorJohn W. Findlay
TitleAn absolute flux density scale at 408 MHz [notes on D.V. Wyllie: MNRAS 142, 229-240, 1979]
Start Date1974?
NotesWith photocopy of Wyllie article; later note in red says "See my letter to Baars"
 [Range 6A Box 6]

ItemTypeCorrespondence
AuthorJohn W. Findlay
RecipientJ.W.M. Baars
Subjectcalibrate interferometer with standard horn; invitation to Baars to participate in program
 [Range 6A Box 6]

ItemTypeCorrespondence
AuthorMel Wright
RecipientJohn W. Findlay
Date of corresp9/13/1973
Subjectuse of lambda 21 cm horn to search for high velocity hydrogen
 [Range 6A Box 6]

ItemTypeReprint
AuthorTom Y. Otoshi, Charles T. Stelzried
TitleCosmic background noise temperature measurements at 13-cm wavelength
NotesReprint: IEEE Tr. Inst. Meas. 24: 174-179, 1975
 [Range 6A Box 6]

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