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

April, 2018

Index includes 190 messages. Sorted by message ID, in descending order.
SubjectAuthorDate (UT)SizeID
Re: John Karl's Celestial Navigation in the GPS AgeSean C30 Apr, 23:454530g41918
Re: John Karl's Celestial Navigation in the GPS AgeAonghus O Concheanainn30 Apr, 22:432654g41917
Mark 7 Knee-Mounted Plotting BoardMiles B. Anderson30 Apr, 20:433160g41916
Re: Navigation ModulesRobin Stuart30 Apr, 19:211698g41915
Re: John Karl's Celestial Navigation in the GPS AgeRobert Bernecky30 Apr, 13:482563g41914
Re: Navigation ModulesAndrew Nikitin30 Apr, 12:431789g41913
Re: John Karl's Celestial Navigation in the GPS AgeStan K29 Apr, 23:004359g41912
Re: John Karl's Celestial Navigation in the GPS AgeRobert VanderPol II29 Apr, 22:021371g41911
John Karl's Celestial Navigation in the GPS AgeAonghus O Concheanainn29 Apr, 21:341730g41910
Re: Navigation ModulesRobin Stuart29 Apr, 17:472171g41909
Re: Navigation ModulesStan K29 Apr, 15:129194g41908
Re: Navigation ModulesAntoine Couëtte29 Apr, 10:249923g41907
Re: Navigation ModulesAntoine Couëtte29 Apr, 06:347039g41906
Navigation ModulesAlan S28 Apr, 20:411611g41905
Re: Celestial Navigation is so simpleAlan S28 Apr, 18:231916g41904
Re: Celestial Navigation is so simpleGreg Rudzinski28 Apr, 17:357606g41903
Re: Celestial Navigation is so simpleGary LaPook28 Apr, 16:398056g41902
Celestial Navigation is so simpleDon Seltzer28 Apr, 15:475430g41901
Re: Norie 1819, Bowditch 1837, and a fine old Tamaya sextant on ebayFrank Reed28 Apr, 04:194321g41900
Re: Norie 1819, Bowditch 1837, and a fine old Tamaya sextant on ebayDavid C28 Apr, 03:482273g41899
Norie 1819, Bowditch 1837, and a fine old Tamaya sextant on ebayFrank Reed28 Apr, 01:492929g41898
Re: Autonomous ships are coming.Jeremy C25 Apr, 06:239170g41897
Re: Autonomous ships are coming.Lu Abel24 Apr, 18:529213g41896
Autonomous ships are coming.Gary LaPook24 Apr, 17:201682g41895
Re: Longest Straight Line Paths on Water or Land on the EarthPeter Hakel24 Apr, 12:315072g41894
Re: Longest Straight Line Paths on Water or Land on the EarthRobert VanderPol II24 Apr, 04:245599g41893
Re: Longest Straight Line Paths on Water or Land on the EarthJohn D. Howard23 Apr, 23:431922g41892
Compassipedia online compass museumPaul Hirose23 Apr, 21:413003g41891
Re: Longest Straight Line Paths on Water or Land on the EarthAlexandre Eremenko23 Apr, 20:213192g41890
Longest Straight Line Paths on Water or Land on the EarthRobert H. van Gent23 Apr, 18:513092g41889
Re: Viking Navigation and "Sunstones"Geoffrey Kolbe23 Apr, 05:141546g41888
Celestial Tools V5.6.9Stan K22 Apr, 18:083761g41887
Sight reduction program for iPhonesChris Caswell22 Apr, 13:131486g41886
Re: Viking Navigation and "Sunstones"Tony Oz22 Apr, 07:332090g41885
Lumpy lunar edgeEd Popko20 Apr, 18:08132177g41884
Re: Moon-rise/set with Air Almanac: how to?Robert Bernecky20 Apr, 14:136187g41883
HO-211 Hulbert Hinkel Jr.Robert VanderPol II20 Apr, 03:422068g41882
Moon-rise/set with Air Almanac: how to?Tony Oz19 Apr, 17:443478g41881
Re: Lunars: this weekend at Mystic SeaportGreg Rudzinski19 Apr, 15:334596g41880
Re: Lunars: this weekend at Mystic SeaportEd Popko19 Apr, 10:151776g41879
Re: Micrometer vernierTony Oz19 Apr, 08:501978g41878
Finding the EnduranceDavid C19 Apr, 07:021529g41877
Re: Lunars: this weekend at Mystic SeaportGreg Rudzinski19 Apr, 04:002122g41876
Re: Micrometer vernierAlexandre Eremenko18 Apr, 22:422077g41875
Re: Micrometer vernierPeter Monta18 Apr, 22:071708831g41874
Re: Micrometer vernierPosth P18 Apr, 17:081641g41873
Re: Lunars: this weekend at Mystic SeaportEd Popko18 Apr, 17:001629g41872
Re: Lunars: this weekend at Mystic SeaportGreg Rudzinski18 Apr, 16:592735g41871
Re: Lunars: this weekend at Mystic SeaportRobin Stuart18 Apr, 13:212382g41870
Re: Micrometer vernierTony Oz18 Apr, 12:552832g41869
Re: Micrometer vernierDavid Pike18 Apr, 11:353273g41868
Re: Micrometer vernierBill Morris18 Apr, 00:044967g41867
Re: Micrometer vernierMichael Bradley17 Apr, 22:482502g41866
Re: Micrometer vernierWilliam Edward Henry17 Apr, 22:472383g41865
Re: Micrometer vernierFrank Reed17 Apr, 18:002106g41864
Re: Micrometer vernierDavid Fleming17 Apr, 17:462205g41863
Re: Micrometer vernierBob Goethe17 Apr, 17:402205g41862
Micrometer vernierFrank Reed17 Apr, 17:032329g41861
Re: Lunars: this weekend at Mystic SeaportJeremy C17 Apr, 12:261795g41860
Re: Sextant as hand luggage on a planeAlan S17 Apr, 04:021656g41859
Re: Lunars: this weekend at Mystic SeaportEd Popko17 Apr, 00:594808g41858
Re: WWII bubble sextants and radiumGary LaPook17 Apr, 00:162331g41857
Re: Lunars: this weekend at Mystic SeaportFrank Reed16 Apr, 18:401597g41856
Lunars: this weekend at Mystic SeaportFrank Reed16 Apr, 18:282209g41855
Re: Sextant as hand luggage on a planeKen Gebhart16 Apr, 17:266105g41854
Re: Celesticomp V instructionsStan K15 Apr, 23:4312714767g41853
Re: Sextant as hand luggage on a planeAlan S15 Apr, 22:371981g41852
Re: SNO-T for sale, £300Robert VanderPol II15 Apr, 21:101374g41851
Re: Sextant as hand luggage on a planeJames F Campbell15 Apr, 20:372094g41850
Re: Sextant as hand luggage on a planeRobin Stuart15 Apr, 19:4246213g41849
Re: Sextant as hand luggage on a planeJames F Campbell15 Apr, 19:162307g41848
Re: Sextant as hand luggage on a planeRobert Eno15 Apr, 19:062385g41847
Re: Sextant as hand luggage on a planeAlejandro Purgue15 Apr, 18:285047g41846
Re: Celesticomp V instructionsJohn Carbone15 Apr, 18:216397g41845
Sextant as hand luggage on a planeBill Lionheart15 Apr, 16:202816g41844
Celesticomp V instructionsBrian Lloyd15 Apr, 15:051778g41843
Re: SNO-T for sale, £300Örjan Sandström15 Apr, 12:021462g41842
Mirages and refraction.Tony Oz14 Apr, 22:345435g41841
Ghost Ring vs. Sight TubeGreg Rudzinski14 Apr, 19:492221g41840
Re: More accurate version of Pub 249 Vol 1 - is it needed?Gary LaPook14 Apr, 05:421719g41839
Re: More accurate version of Pub 249 Vol 1 - is it needed?David Pike13 Apr, 20:074486g41838
Re: More accurate version of Pub 249 Vol 1 - is it needed?Gary LaPook13 Apr, 16:221816g41837
The marquis de Chabert & the lunar distanceDucruy Jacques13 Apr, 16:082379g41836
More accurate version of Pub 249 Vol 1 - is it needed?Rafal O.13 Apr, 11:173298g41835
Re: Video tour of our MoonSean C13 Apr, 02:131583g41834
Video tour of our MoonEd Popko12 Apr, 15:121719g41833
Re: New Edition of BowditchKen Gebhart11 Apr, 22:007085g41832
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayDon Seltzer11 Apr, 21:535917g41831
New Edition of BowditchRommel John Miller11 Apr, 20:022449g41830
Re: Wikipedia Article on "Stellar Triangulation"Fred Hebard11 Apr, 19:2113722g41829
Sumner Line SR by Martelli TableGreg Rudzinski11 Apr, 18:031952g41828
Re: Henning Umland's javascript web appBill Lionheart11 Apr, 17:5310632g41827
Re: Sail the tall ship OHP, April 25-May 10Frank Reed11 Apr, 17:086788g41826
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayFrank Reed11 Apr, 17:002549g41825
Re: Henning Umland's spreadsheets.Frank Reed11 Apr, 16:396421g41824
SNO-T for sale, £300Robert VanderPol II11 Apr, 12:191538g41823
Re: Henning Umland's spreadsheets.Brad Morris10 Apr, 20:139068g41822
Re: Henning Umland's spreadsheets.Paul Hirose10 Apr, 19:563060g41821
Lewis and Clark LunarsGreg Rudzinski10 Apr, 15:481555g41820
Re: Henning Umland's spreadsheets.Bill Lionheart10 Apr, 14:064313g41819
Re: Wikipedia Article on "Stellar Triangulation"Frank Reed9 Apr, 17:509083g41818
Re: Second hand sextant adviceBob Goethe9 Apr, 16:582102g41817
Lunars: Altitude Accuracy (revisited)Ed Popko9 Apr, 16:3715681g41816
Wikipedia Article on "Stellar Triangulation"Fred Hebard9 Apr, 15:542297g41815
Re: New York Times article on Viking Navigation and their use of "Sunstones"Bob Goethe9 Apr, 15:441469g41814
Re: New York Times article on Viking Navigation and their use of "Sunstones"Tony Oz9 Apr, 14:051608g41813
Re: Photo of horizonRobert VanderPol II9 Apr, 13:461760g41812
Re: Article: Inside the Worst U.S. Maritime Disaster in DecadesEd Popko9 Apr, 11:351763g41811
Re: New York Times article on Viking Navigation and their use of "Sunstones"Wolfgang Köberer9 Apr, 07:124961g41810
Re: Photo of horizonSean C9 Apr, 02:231449g41809
Henning Umland's spreadsheets.Bill Lionheart9 Apr, 02:203581g41808
Re: New York Times article on Viking Navigation and their use of "Sunstones"Erland Andersen9 Apr, 02:153068g41807
Article: Inside the Worst U.S. Maritime Disaster in DecadesJackson McDonald9 Apr, 01:541965g41806
Photo of horizonRobert VanderPol II8 Apr, 15:272276g41805
New York Times article on Viking Navigation and their use of "Sunstones"Ed Popko8 Apr, 10:342500g41804
Re: Second hand sextant adviceMichael Bradley8 Apr, 09:183385g41803
Re: Second hand sextant adviceAlan S8 Apr, 04:472907g41802
Re: Correction for diameter of the earthSean C8 Apr, 04:431596g41801
Re: Second hand sextant adviceJackson McDonald8 Apr, 01:268468g41800
Correction for diameter of the earthC Solo7 Apr, 23:561580g41799
Re: Second hand sextant adviceDavid C7 Apr, 22:311951g41798
Re: Second hand sextant adviceBill Morris7 Apr, 21:507501g41797
Re: Second hand sextant adviceBruce Cutting7 Apr, 21:376731g41796
Re: Lunar-Distance correction for OblatenessFrank Reed7 Apr, 02:109981g41795
Re: Lunar-Distance correction for OblatenessSean C7 Apr, 01:004442g41794
Re: Lunar-Distance correction for OblatenessEd Popko6 Apr, 20:241650g41793
Re: Second hand sextant adviceGreg Rudzinski6 Apr, 20:103210g41792
Re: Second hand sextant adviceKen Gebhart6 Apr, 19:1015615g41791
Re: Second hand sextant adviceChris Caswell6 Apr, 19:061821g41790
Re: Second hand sextant adviceFrank Reed6 Apr, 18:594436g41789
Re: Lunar-Distance correction for OblatenessFrank Reed6 Apr, 18:485238g41788
Second hand sextant adviceEdward Colonna6 Apr, 15:3658085g41787
Lunar-Distance correction for OblatenessEd Popko6 Apr, 14:124223g41786
Re: Quick Estimate of Sun Declination: analemmas?max mulhern6 Apr, 13:476143g41785
Re: Sight reduction using a calculator's POL (arctan2) keyLars Bergman5 Apr, 20:351647g41784
Re: Quick Estimate of Sun DeclinationTony Oz5 Apr, 18:522844g41783
Re: Quick Estimate of Sun DeclinationFrank Reed5 Apr, 18:496392g41782
Re: Quick Estimate of Sun Declination: analemmas?Frank Reed5 Apr, 16:026807g41781
Re: Quick Estimate of Sun Declination: analemmas?max mulhern5 Apr, 15:121834g41780
Re: Sight reduction using a calculator's POL (arctan2) keyTony Oz5 Apr, 13:076045g41779
Universal Plotting Sheet at High LatitudesBob Goethe5 Apr, 11:367403g41778
Re: Quick Estimate of Sun DeclinationHerman Dekker5 Apr, 10:202082g41777
Re: JPL ephemeresis and Nautical Almanac - speed of light questionPaul Hirose5 Apr, 04:565457g41776
Re: Sight reduction using a calculator's POL (arctan2) keyGreg Rudzinski5 Apr, 04:191988g41775
Quick Estimate of Sun DeclinationFrank Reed5 Apr, 02:064547g41774
Re: JPL ephemeresis and Nautical Almanac - speed of light questionFrank Reed4 Apr, 16:299844g41773
Re: Sight reduction using a calculator's POL (arctan2) keyRobin Stuart4 Apr, 11:571697g41772
Re: JPL ephemeresis and Nautical Almanac - speed of light questionPaul Hughes4 Apr, 09:341863g41771
Re: JPL ephemeresis and Nautical Almanac - speed of light questionRafal O.4 Apr, 07:084577g41770
Re: JPL ephemeresis and Nautical Almanac - speed of light questionRafal O.4 Apr, 06:341588g41769
Re: Nautical Almanac, HO 229 or HO 249John D. Howard3 Apr, 22:382645g41768
Re: JPL ephemeresis and Nautical Almanac - speed of light questionJohn D. Howard3 Apr, 22:153535g41767
Re: Sight reduction using a calculator's POL (arctan2) keyLars Bergman3 Apr, 21:4011158g41766
Re: Nautical Almanac, HO 229 or HO 249Lindsey Philpott3 Apr, 21:321312g41765
Re: JPL ephemeresis and Nautical Almanac - speed of light questionFrank Reed3 Apr, 19:3910421g41764
Re: JPL ephemeresis and Nautical Almanac - speed of light questionBrad Morris3 Apr, 19:387216g41763
Re: Google Honors John Harrison with "Doodle"Brad Morris3 Apr, 19:196254g41762
Re: JPL ephemeresis and Nautical Almanac - speed of light questionBrad Morris3 Apr, 19:109705g41761
Re: JPL ephemeresis and Nautical Almanac - speed of light questionJohn D. Howard3 Apr, 19:103914g41760
Re: Sight reduction using a calculator's POL (arctan2) keyRobert Bernecky3 Apr, 18:511896g41759
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayWolfgang Köberer3 Apr, 18:123696g41758
Re: JPL ephemeresis and Nautical Almanac - speed of light questionTony Oz3 Apr, 17:281916g41757
Re: Sight reduction using a calculator's POL (arctan2) keyGreg Rudzinski3 Apr, 17:274154g41756
Re: JPL ephemeresis and Nautical Almanac - speed of light questionRafal O.3 Apr, 13:142247g41755
Re: JPL ephemeresis and Nautical Almanac - speed of light questionPeter Monta3 Apr, 12:515337g41754
Re: JPL ephemeresis and Nautical Almanac - speed of light questionRafal O.3 Apr, 12:502263g41753
Re: Sight reduction using a calculator's POL (arctan2) keyRobin Stuart3 Apr, 12:3045749g41752
Re: JPL ephemeresis and Nautical Almanac - speed of light questionMike Mayer3 Apr, 12:248771g41751
Re: JPL ephemeresis and Nautical Almanac - speed of light questionTony Oz3 Apr, 10:201463g41750
Re: Sight reduction using a calculator's POL (arctan2) keyTony Oz3 Apr, 08:491506g41749
Google Honors John Harrison with "Doodle"Sean C3 Apr, 08:461853g41748
JPL ephemeresis and Nautical Almanac - speed of light questionRafal O.3 Apr, 07:502811g41747
Re: Nautical Almanac, HO 229 or HO 249Robert VanderPol II3 Apr, 06:191999g41746
Nautical Almanac, HO 229 or HO 249Lindsey Philpott3 Apr, 05:341627g41745
Re: Celestial SimulatorPhil Sadler3 Apr, 02:441505g41744
Re: Sight reduction using a calculator's POL (arctan2) keyGreg Rudzinski2 Apr, 23:492389g41743
Sight reduction using a calculator's POL (arctan2) keyRobert Bernecky2 Apr, 13:377387g41742
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayDon Seltzer1 Apr, 23:586219g41741
Re: Polarized Sunglasses for CNGreg Rudzinski1 Apr, 23:565239g41740
Re: Celestial SimulatorPaul Hirose1 Apr, 23:225450g41739
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayDon Seltzer1 Apr, 22:468253g41738
Re: Polarized Sunglasses for CNTony Oz1 Apr, 22:022405g41737
Re: Two Suns on the Horizon?Tony Oz1 Apr, 21:502044g41736
Re: Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayWilliam A1 Apr, 20:273590g41735
Re: Upon Oceans endorsementWilliam A1 Apr, 20:222936g41734
Re: Two Suns on the Horizon?Frank Reed1 Apr, 16:595336g41733
Re: Two Suns on the Horizon?Nick M1 Apr, 12:381744g41732
Re: Polarized Sunglasses for CNGeoffrey Kolbe1 Apr, 05:511796g41731
Re: Celestial SimulatorPhil Sadler1 Apr, 02:562202g41730
Janet Taylor's "Principles of Navigation Simplified" (1837) on ebayFrank Reed1 Apr, 00:554726g41729

Index includes 190 messages.

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