2018

Volume 25, Number 1, March 2018

  • Sundials for Starters - The Dial At Howard University  Robert L. Kellogg
  • A "Tool" To Make All Horizontal Dials for Any Latitude Alessandro Gunella
  • An Observation By Athanasius Kircher (1646)
  • From Sculpture to Sundial                                    Deran Wright
  • Star Trials as Conic Sections                                Ortwin Feustel
  • Digital Bonus
Sibenac Savoie Supporting Excel Spreadsheets
Correction Horaire Excel Spreadsheets
Lahaina Noon at Subaru Telescope's Base Facility.mp4
Sundial and Geometry - Intro for the Classroom Lawrence E. Jones (1980)
  • On a Sundial in Mottram Churchyard, Whitsuntide 1865 William Quarmby
  • A Diesel Engine Sundial                                       Herbert H.J. Riedel
  • Spreadsheets for Savoie                                      John Sibenac
  • A Large Equatorial Sundial Below the Equator        James Stegenga
  • A new Circular Double Helix Sundial                      Yves Zweifel
  • Chartres: Highlight of St-Jean The Window & Nail  Don J.R. Petrie
  • Sky Gate and Lahaina Noon                                  Onlyinhawaii.org
  • Sightings... In a St. Louis Seminary                       Don Snyder
  • The Tove's Nest
  • Benjamin Banneker Plaque [for Howard University Sundial]

2017

Volume 24, Number 4, December 2017

  • Sundials for Starters - Life and Death of a Sundial   Robert L. Kellogg
  • 3D Printing a Schmoyer Dial Replica                       Robert L. Kellogg
  • A Horizontal Tide Dial                                            Steve Lelievre
  • Reflection of the Sun in a Mirror                             Gianni Ferrari
  • Sightings ... In St. Louis Missouri                            Don Snyder
  • g-math: An Excel Add-In for Gnomonics                  Steve Lelievre
  • The Declination of the Sun on a Day of N Hours        Alessandro Gunella
  • The Tove's Nest
  • Digital Bonus
Equant Dials Lelievre
Quadrant.zip (DeltaCad basic procedures for gmath.xlam (file needed to install Steve Lelievre's Excel add-in)
SunquestScadFiles.zip (four scad files to 3D print the Sunquest Dial)
SchmoyerDial&3DPrintin.mp4 (Bob Kellogg's video presentation)
2017 Schmoyer Dial & 3D Printing                                      Robert L. Kellogg
2017 Variants of Foster-Lambert & Sawyer quadrant dials
2017 Overview of Sundials in Sydney & New Zealand     Martins Gills
  • Schmoyer Sunquest [Gnomon] Schematic                Richard Schmoyer
     

Volume 24, Number 3, September 2017

  • Sundials for Starters - Other Shadows                     Robert L. Kellogg
  • An Eclipse Sundial for Perry County, Mo.                  Donald Snyder
  • The Hollow Hemispheric Sundial in the Vatican Museum Ortwin Feustel
  • Gnomonic Watch Faces                                          Gian Casalegno
  • The Sundial                                                          Caroline A.B. Mason (1891)
  • A Portable Sundial                                                 Arthur L. Kaufman
  • The First Meridian Line in the Basilica of S. Petronio Alessandro Gunella
  • The Tove's Nest
  • Digital Bonus
2017 What People Expect From Sundials                         Martins Gills
2017 Eclipse Sundial Project                                               Bill Gottesman
2017 Perry County Sundial                                                   Donald Snyder
2017 Unusual Sundials in Sonne & Alemma                   Helmut Sonderegger
2017 Sundials Through Time in Mexico                             Villegas & Montes
  • Usus Et Tractatio Gnomonis Magni                          Egnazio Danti (1576)

 

Volume 24, Number 2, June 2017

  • Sundials for Starters – How Accurate is a Sundial?   Robert L. Kellogg
  • Bifilar Sundials Within Everyone's Means                 Gian Casalegno
  • A Universal Equinoctial Sundial & Hindu Time Measurement Sue Manston
  • The Spherograph & Hyatt's Celestial Coordinator     Erwin Wechsler
  • A Foster-Lambert Sundial Showing Hours to Sunset Steve Lelievre
  • On a Sundial                                                        William Croswell Doane
  • How Uniform Standard Time Came About               Frank Leslie's Popular
  • Innards of the Pilkington Gibbs Heliochronometer     J. Mike Shaw
  • Notes On the Global Analemma                              Mark Montgomery
  • A Seattle Picnic Table Sundial                                Arthur L. Kaufman
  • Schoner's 1562 Method for Building a Horizontal Sundial Alessandro Gfunella
  • Digital Bonus
Time Error Spreadsheet
Manual Celestial Coordinator.pdf
Orolgi Solari
Bifilar Design Examples (Short Videos)
  • The Tove's Nest
  • Sun Cannon in Atividabert, Sweden                        Solkanonklubben

Volume 24, Number 1, March 2017

  • Sundials for Starters – Solar Eclipses In History    Robert L. Kellogg
  • Observing A Total Solar Eclipse                        Kretsch & Kellogg
  • The Underused Underslung Gnomon                 Don J.R. Petrie
  • The Discovery of the Wheel by Caspar Ens        Alessandro Gunella
  • Self-Supplying Fountain and Sun-Dial                The Mechanic and Chemist
  • A Mathematical Analysis of the Globe Sundial of Matelica Ortwin Feustel
  • Solargraphy                                                    Mark Montgomery
  • A Sundial with Walking Gnomon                        Helmut Sonderegger
  • An Inventory of Spanish SUndials                      Pedro Novella
  • Sun Dial, Brazen Devil, and Wooden & Iron Gnomons William Harvey
  • The Tove's Nest
  • Digital Bonus

2016

Volume 23, Number 4, December 2016

  • Sundials for Starters - Sundials Gone Awry          Robert Kellogg
  • A Universal Sundial Ruler For Shadow-Following Clocks  Heinz Sigmund
  • To An Old Sundial                                             R.S.N (1914)
  • A Survey of Various Globe Sundials                     Mark Montgomery
  • Elliptical Sundials: General And Craticular            Fred Sawyer
  • Seeing Double By a Famous American Adventurer Martin Jenkins
  • Digital Bonus
2016 Catalan Sundials - Power Point Roger Bailey
2016 Spherical Sundials - Power Point Mark Montgomery
2016 Wooden Dials - Power Point O'Hearn
United States Patent Heliosphere US 8,528,218 B2 Popendorf
2011 Elliptical Dials - Power Point Fred Sawyer
2011 La Hire and Picard - Power Point Fred Sawyer
2016 Brazil's Newest Sundial - Power Point Jim Stegenga
Tesseract Flyer PDF
  • Bettini's Method For THe Horizontal Dial               Alessandro Gunella
  • The Tove's Nest

Volume 23, Number 3, September 2016

  • Sundials for Starters - Right Triangles and a Classic Equation - Robert Kellogg
  • Globe Sundial of Prosymna - The Enigma Solved   Ortwin Feustel
  • Linear Equant Sundial Design                               Fred Sawyer
  • A Graphical Dial Construction By Jean de Castillon  Fred Sawyer
  • Digital Bonus
2016 Retrospective                                                              Roger Bailey
2016 Sundials and Smartphones - Power Point            Roger Bailey
2016 TIme to Reflect - Power Point                                   Ken Clark
2016 Digital Gnomon Update - Power Point                   Robert Kellogg
2009 Equants Scales & Castillon - Power Point            Fred Sawyer
2016 Brasil's Newest Sundial - Power Point                  Jim Stegenga
  • Sundials And Smartphones                                  Roger Bailey
  • A Delight Still to Chastened And Wiser Men           Leighton Buzzard Observer
  • The Tove's Nest

Volume 23, Number 2, June 2016

  • Editor's Note
  • The Tove's Nest
  • Digital Bonus
BSS Duck Soup                                                                                     Martin Jenkins
  • The Properties of Shadows in Dialing                                Gianni Ferrari
  • The Shadow Sharpener                                                   Gianni Ferrari

Volume 23, Number 1, March 2016

  • Sundials for Starters - How Bright is the Sun at Rise & Set   Robert L. Kellpogg
  • Quiz Answer: Is This Dialing Scale Universal?                      Rolf Wieland
  • Helsinki Reflector Noon Marks                                            Martins GIlls
  • The Heliochronometer of Schwarzenau                              Kurt Descovich
  • Stefano DiGiovanni: Author Who Played With Italic Hours     Allesandro Gunella
  • Digital Bonus
Hill TOp Sundial Presentation                                                            Victoria Lister Carley
Ottoman Sundial - Konya Science Cneter                                        Roger Bailey
Missing Handen Sundial Presentation                                             Martins Gills
Vuotie Noon Reflectors Presentation                                                Martins Gills
Abstracts of Publications on Gnomonics                                         Rafael Soler Gaya
Digital Gnomon Video                                                                          Robert L. Kellogg
Sundial Alignment Program                                                                Bill Gottesman
  • Designing a Digital Sundial                                                Robert L. Kellogg
  • The Tove's Nest
  • A High Altitude Sundial!