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A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Position-Finding

Recent Messages

Index includes 266 messages. Sorted by message ID, in descending order.
SubjectAuthorDate (UT)SizeID
Re: How to pre-calculate for negative altitudes?Greg Rudzinski23 Oct, 19:456357g40457
Re: How to pre-calculate for negative altitudes?Frank Reed23 Oct, 16:414130g40456
Re: How to pre-calculate for negative altitudes?Tony Oz23 Oct, 16:022715g40455
Re: Mer-pass vs Upper CulminationJackson McDonald23 Oct, 14:4715276g40454
Re: How to pre-calculate for negative altitudes?Frank Reed23 Oct, 14:224198g40453
How to pre-calculate for negative altitudes?Tony Oz23 Oct, 13:132659g40452
Call for Papers: History of navigation conference, National Maritime Museum, Greenwich, 2018Richard Dunn23 Oct, 10:264222g40451
Re: Mer-pass vs Upper CulminationFrank Reed23 Oct, 03:086825g40450
Re: Practice CN on cruise shipNorm Goldblatt23 Oct, 02:081659g40449
Re: Mer-pass vs Upper CulminationSean C23 Oct, 01:502552g40448
Re: Practice CN on cruise shipBruce Cutting22 Oct, 18:123607g40447
Mer-pass vs Upper CulminationTony Oz22 Oct, 15:472602g40446
Re: What's "under the hood" of the Raft Book?Tony Oz22 Oct, 15:293514g40445
Re: Sunrise is a fictionJohn D. Howard22 Oct, 15:011870g40444
Re: Sunrise is a fictionDavid Pike22 Oct, 09:592478g40443
Re: What's "under the hood" of the Raft Book?David Pike22 Oct, 09:052075g40442
Re: Practice CN on cruise shipHerman Dekker22 Oct, 08:111702g40441
Re: Practice CN on cruise shipGary LaPook22 Oct, 06:162218g40440
Re: Practice CN on cruise shipBruce Cutting22 Oct, 01:517863g40439
Sunrise is a fictionFrank Reed21 Oct, 23:405298g40438
Re: Practice CN on cruise shipNorm Goldblatt21 Oct, 23:241519g40437
Re: Practice CN on cruise shipNorm Goldblatt21 Oct, 22:591511g40436
Re: Practice CN on cruise shipRommel John Miller21 Oct, 22:555254g40435
Re: What's "under the hood" of the Raft Book?Gary LaPook21 Oct, 22:244251g40434
Re: Practice CN on cruise shipGary LaPook21 Oct, 22:004349g40433
Re: Practice CN on cruise shipFrank Reed21 Oct, 21:419438g40432
Re: What's "under the hood" of the Raft Book?Greg Rudzinski21 Oct, 20:054772g40431
Re: Practice CN on cruise shipGreg Rudzinski21 Oct, 19:551697g40430
Re: Practice CN on cruise shipRommel John Miller21 Oct, 19:3810123g40429
Re: Practice CN on cruise shipAndrés Ruiz21 Oct, 19:145330g40428
Re: Azimuth method for positionFrancis Upchurch21 Oct, 18:301542g40427
Re: Practice CN on cruise shipFrank Reed21 Oct, 18:213428g40426
Re: Practice CN on cruise shipPaul Hirose21 Oct, 18:092795g40425
Re: What's "under the hood" of the Raft Book?Tony Oz21 Oct, 18:041655g40424
Re: Practice CN on cruise shipHewitt Schlereth21 Oct, 18:026124g40423
Re: Practice CN on cruise shipGreg Rudzinski21 Oct, 17:552031g40422
Re: What's "under the hood" of the Raft Book?Greg Rudzinski21 Oct, 17:473068g40421
Re: Azimuth method for positionGeoffrey Kolbe21 Oct, 15:373647g40420
Re: Practice CN on cruise shipNorm Goldblatt21 Oct, 15:111566g40419
Re: Practice CN on cruise shipNoell Wilson21 Oct, 12:373414g40418
Re: Practice CN on cruise shipJackson McDonald21 Oct, 11:498778g40417
What's "under the hood" of the Raft Book?Tony Oz21 Oct, 11:265747g40416
Re: Practice CN on cruise shipGary LaPook21 Oct, 04:461880g40415
Re: Practice CN on cruise shipNorm Goldblatt21 Oct, 04:421433g40414
Re: Practice CN on cruise shipNorm Goldblatt21 Oct, 04:091317g40413
Re: Practice CN on cruise shipGreg Rudzinski21 Oct, 03:111870g40412
Re: Practice CN on cruise shipGreg Rudzinski21 Oct, 02:212353g40411
Practice CN on cruise shipNorm Goldblatt21 Oct, 01:292227g40410
Re: Azimuth method for positionNoell Wilson21 Oct, 00:142607g40409
Re: Airline inflight Route Map Anomalies and a PuzzleRobin Stuart20 Oct, 21:5646785g40408
Re: Azimuth method for positionFrancis Upchurch20 Oct, 20:481640g40407
Re: Rhode Island Tall Ship IncidentBill B20 Oct, 19:173204g40406
Re: Rhode Island Tall Ship IncidentFrank Reed20 Oct, 17:583161g40405
Re: Rhode Island Tall Ship IncidentÖrjan Sandström20 Oct, 17:262029g40404
Re: Azimuth method for positionBill Lionheart20 Oct, 16:494097g40403
Re: Azimuth method for positionFrancis Upchurch20 Oct, 14:582593g40402
Re: Azimuth method for positionHerman Dekker20 Oct, 14:071705g40401
Re: Azimuth method for positionAndrés Ruiz20 Oct, 10:413593g40400
Re: Azimuth method for positionFrancis Upchurch20 Oct, 09:151687g40399
Re: Azimuth method for positionAndrés Ruiz20 Oct, 10:24236203g40398
Re: Azimuth method for positionGeoffrey Kolbe20 Oct, 06:061732g40397
Re: Houseboat of time (about that pic of Ridge...)Paul Saffo20 Oct, 05:013515g40396
Re: Rhode Island Tall Ship IncidentMarty Lyons20 Oct, 02:501646g40395
Rhode Island Tall Ship IncidentFrank Reed20 Oct, 02:113988g40394
Re: Airline inflight Route Map Anomalies and a PuzzleFrank Reed20 Oct, 01:228563g40393
Re: Airline inflight Route Map Anomalies and a PuzzleFrank Reed20 Oct, 00:304261g40392
Azimuth method for positionMarty Lyons19 Oct, 23:501773g40391
Re: Airline inflight Route Map Anomalies and a PuzzleBrad Morris19 Oct, 22:5012567g40390
Re: Airline inflight Route Map Anomalies and a PuzzleDavid C19 Oct, 22:042532g40389
Airline inflight Route Map Anomalies and a PuzzleRobin Stuart19 Oct, 21:2951243g40388
Re: Bowditch's Navigator 1825Rommel John Miller19 Oct, 20:288504g40387
Re: Bowditch's Navigator 1825Frank Reed19 Oct, 20:223328g40386
Re: Houseboat of timePaul Saffo19 Oct, 19:593567g40385
Bowditch's Navigator 1825Karyn Kilcher19 Oct, 19:532277g40384
Re: ASA Douglas Style PlotterTony Oz19 Oct, 16:512472g40383
Re: Houseboat of timeTony Oz19 Oct, 15:501405g40382
Re: Molasses as an artificial horizonStephen Wawrzyniec19 Oct, 14:571921g40381
Re: Houseboat of timePaul Saffo19 Oct, 13:561962g40380
Re: A different kind of positional astronomyBrad Morris18 Oct, 22:457156g40379
Re: A different kind of positional astronomyHerbert Prinz18 Oct, 22:071909g40378
Re: Molasses as an artificial horizonAlan S18 Oct, 20:591705g40377
Re: A different kind of positional astronomyBrad Morris18 Oct, 18:225366g40376
A different kind of positional astronomyJing C18 Oct, 17:531973g40375
Re: Houseboat of timeMarty Lyons18 Oct, 16:431446g40374
Re: Dark Glass Artificial HorizonMarty Lyons18 Oct, 16:262164g40373
Re: Houseboat of timeRommel John Miller18 Oct, 15:479586g40372
Re: Dark Glass Artificial HorizonDavid Pike18 Oct, 14:322107g40371
Re: Houseboat of timeDon Seltzer18 Oct, 14:245259g40370
Re: Molasses as an artificial horizonMarty Lyons18 Oct, 13:531679g40369
Re: Dark Glass Artificial HorizonMarty Lyons18 Oct, 13:411586g40368
Houseboat of timeMarty Lyons18 Oct, 01:312116g40367
Re: Accuracy of ephemerisKen Muldrew17 Oct, 12:3882352g40366
Re: The "Raft Book" by Harold Gatty - ?Tony Oz17 Oct, 09:452298g40365
Re: ASA Douglas Style PlotterHerman Dekker17 Oct, 09:332246g40364
Re: ASA Douglas Style PlotterDavid Pike17 Oct, 06:403048g40363
Re: Accuracy of ephemerisBill Lionheart17 Oct, 06:2315040g40362
Re: Accuracy of ephemerisKen Muldrew17 Oct, 01:1713785g40361
Re: ASA Douglas Style PlotterHerman Dekker17 Oct, 00:371667g40360
Re: Mirror adjustment toolsHien Thanh Nguyen16 Oct, 22:114910g40359
Re: American Practical Navigator, Bowditch 2017Alan S16 Oct, 21:206217g40358
Re: Mirror adjustment toolsDon Seltzer16 Oct, 20:306173g40357
Re: ASA Douglas Style PlotterGreg Rudzinski16 Oct, 20:063192g40356
Re: Accuracy of ephemerisBill Lionheart16 Oct, 20:023938g40355
Re: The "Raft Book" by Harold Gatty - ?Tony Oz16 Oct, 19:291841g40354
Re: The "Raft Book" by Harold Gatty - ?Dave Walden16 Oct, 18:151702g40353
Re: The "Raft Book" by Harold Gatty - ?Tony Oz16 Oct, 14:351518g40352
Re: ASA Douglas Style PlotterDavid Pike16 Oct, 14:082643g40351
Re: Accuracy of ephemerisJohn D. Howard16 Oct, 14:022423g40350
Re: The "Raft Book" by Harold Gatty - ?Robert VanderPol II16 Oct, 13:561375g40349
Re: The "Raft Book" by Harold Gatty - ?Tony Oz16 Oct, 10:351653g40348
Re: ASA Douglas Style PlotterHerman Dekker16 Oct, 10:161866g40347
Accuracy of ephemerisBill Lionheart16 Oct, 08:213827g40346
"backseat driver in a bomber" (1943 article)Paul Hirose16 Oct, 06:563735g40345
ASA Douglas Style PlotterGreg Rudzinski15 Oct, 20:462321g40344
Re: The Maths behind DSDEamonn Sparling15 Oct, 16:242334g40343
Islamic astronomyJackson McDonald15 Oct, 12:582538g40342
Re: Mirror adjustment toolsEd Popko14 Oct, 13:052718g40341
Re: Mirror adjustment toolsHien Thanh Nguyen14 Oct, 10:369935g40340
Re: Mirror adjustment toolsEd Popko13 Oct, 17:1548294g40339
Re: Mirror adjustment toolsD Maracle13 Oct, 17:011936g40338
Re: Mirror adjustment toolsTony Oz13 Oct, 10:482089g40337
Re: Mirror adjustment toolsFrank Reed13 Oct, 00:192811g40336
Re: Mirror adjustment toolsSean C13 Oct, 00:062324g40335
Re: Mirror adjustment toolsHien Thanh Nguyen13 Oct, 00:048705g40334
Re: Mirror adjustment toolsHien Thanh Nguyen12 Oct, 23:4816132g40333
Re: Mirror adjustment toolsFrank Reed12 Oct, 21:594705g40332
Re: Mirror adjustment toolsRidge White12 Oct, 21:2312811g40331
Re: Mirror adjustment toolsHien Thanh Nguyen12 Oct, 19:4011362g40330
Re: Otis King Sight ReductionGreg Rudzinski12 Oct, 15:215852g40329
Re: Otis King Sight ReductionRobert VanderPol II12 Oct, 04:0410825g40328
Re: Otis King Sight ReductionBrad Morris11 Oct, 21:557222g40327
Re: Otis King Sight ReductionGreg Rudzinski11 Oct, 17:461711g40326
Re: CelesticompIan Gifford11 Oct, 10:512531g40325
Re: Mirror adjustment toolsHien Thanh Nguyen11 Oct, 07:4011034g40324
Re: Mirror adjustment toolsHien Thanh Nguyen11 Oct, 07:338366g40323
Re: Polhemus computerStan K10 Oct, 19:053858g40322
Polhemus computerGary LaPook10 Oct, 18:391872g40321
Re: CelesticompMarshall Edgell10 Oct, 14:181473g40320
Re: The Maths behind DSDPaul Hirose10 Oct, 00:025132g40319
Navigation Spreadsheets in 2018Peter Hakel9 Oct, 19:493625g40318
Re: The Maths behind DSDEamonn Sparling9 Oct, 17:121746g40317
Re: The Maths behind DSDDave Walden9 Oct, 12:081829g40316
Re: Mirror adjustment toolsLuc Desmedt9 Oct, 10:328688g40315
Re: Otis King Sight ReductionFrancis Upchurch9 Oct, 07:132085g40314
Re: The Maths behind DSDGreg Rudzinski9 Oct, 01:114975g40313
The Maths behind DSDEamonn Sparling8 Oct, 23:382179g40312
Re: Mirror adjustment toolsPeter Monta8 Oct, 22:387328g40311
Re: Mirror adjustment toolsRidge White8 Oct, 21:034073g40310
Otis King Sight ReductionGreg Rudzinski8 Oct, 18:102590g40309
Navigation Symposium, four weeks awayFrank Reed8 Oct, 02:245880g40308

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