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Post			Author	Forum	Replies	Views	Posted [asc]
		Thread: warning - graphic content Post: RE: warning - graphic content pabrides Wrote: (02-20-2021, 05:33 AM) -- Quick note. The following is a quote from Frank Reed who apparently owns NAVLIST and Reednavigation.com. This is his very racist and offensive opinion of F...	Douglas Denny	General Topics Here	4	4,297	12-16-2022, 01:45 PM
		Thread: British Mark IXA Bubble Sextant Post: RE: British Mark IXA Bubble Sextant LoneStarGazers Wrote: (09-28-2020, 03:54 PM) -- Does anyone have experience with bubble sextants?  I recently acquired one, but am finding it difficult to move the Slow Motion Knob.  When I first ins...	Douglas Denny	General Topics Here	2	4,235	12-16-2022, 12:51 PM
		Thread: Buy a sextant Post: RE: Buy a sextant Rdutton Wrote: (01-21-2017, 12:24 PM) -- Can you tell us what SNO-T stands for?  It probably has provided some laughs for a name in English speaking countries. Thanks for the excellent photos of y...	Douglas Denny	General Topics Here	14	34,459	01-21-2017, 11:09 PM
		Thread: Buy a sextant Post: RE: Buy a sextant P.Rutherford Wrote: (01-20-2017, 08:36 PM) -- Douglas, I've never seen a SNO-T up that close.  It looks like a remarkably well made instrument. Does the box sextant lend itself to marine navi...	Douglas Denny	General Topics Here	14	34,459	01-20-2017, 10:17 PM
		Thread: Buy a sextant Post: RE: Buy a sextant c_davidson Wrote: (01-19-2017, 01:46 PM) -- Douglas, Now that's a handsome photo!  Is that a magnifying glass near the index clamp?  What is the index vernier scale graduated down to?  .2   .4   ,...	Douglas Denny	General Topics Here	14	34,459	01-20-2017, 08:03 PM
		Thread: Buy a sextant Post: RE: Buy a sextant c_davidson Wrote: (01-17-2017, 04:23 AM) -- Collecting sextants can be an expensive but very satisfying hobby! I would really love to get an Observator Mark 4. Here it is- (notice no filters!...	Douglas Denny	General Topics Here	14	34,459	01-18-2017, 12:23 AM
		Thread: Who bothers with Noon sights, and why? Post: RE: Who bothers with Noon sights, and why? CelNav57 Wrote: (02-29-2016, 02:18 PM) -- The following is copied from part of JeremyParker's post over at; [/url] [url=https://thenauticalalmanac.com/Forum/showthread.php?tid=14] (https://thenautic...	Douglas Denny	The Sight Reduction process	2	7,373	01-15-2017, 09:12 PM
		Thread: Buy a sextant Post: RE: Buy a sextant albyreto Wrote: (01-27-2016, 05:48 PM) -- Hi I have a Mark 15 plastic sextant and I want to buy a better one..  I've heard about Astra IIIb and Astra Professional... differences? what is the best...	Douglas Denny	General Topics Here	14	34,459	01-15-2017, 08:01 PM
		Thread: Altitude correction, Sun, with reflecting artificial horizon Post: RE: Altitude correction, Sun, with reflecting arti... stargazer Wrote: (01-05-2016, 01:46 AM) -- The sun has a large apparent disc covering a big area. The lower limb has more atmospheric refractive bending than the upper limb. By the way, the bent ligh...	Douglas Denny	General Topics Here	9	24,280	01-15-2017, 07:27 PM
		Thread: Arrogant mathematicians Post: RE: Arrogant mathematicians jeremyparker Wrote: (03-09-2016, 11:28 PM) -- c_davidson Wrote: (02-29-2016, 03:01 PM) -- Celestial navigation is difficult for a multitude of reasons but I wish to focus upon one particular- the ma...	Douglas Denny	General Topics Here	3	8,263	01-15-2017, 04:31 PM

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