NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Bubble Sextant
From: Gary LaPook
Date: 2008 Aug 19, 12:29 -0700
From: Gary LaPook
Date: 2008 Aug 19, 12:29 -0700
I have to correct my perevious post, the sextant available on ebay was
misidentified as an MA-2 bubble sextant but looking at the picture
clearly shows that it is the much rarer and desirable MA-1 pendulous
mirror type. You can see that there is no bubble chamber that would be
mounted on top of an MA-2. Look at :
glapook@pacbell.net wrote:
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http://home.earthlink.net/%7Es543t-24dst/airnav/index.html to see for yourself. This is a desirable sextant bcause there is no bubble chamber so this eliminates the common problem of the bubble chamber losing its fluid and becoming useless. It is also desirable because you get a clear line to use for the reference point rather than the less precise middle of the bubble. Ebay link: http://cgi.ebay.com/Kollsman-Handheld-Aircraft-Sextant-Bubble-Type-1972_W0QQitemZ150284713834QQcmdZViewItem?hash=item150284713834&_trkparms=72%3A1011%7C39%3A1%7C66%3A1%7C65%3A12%7C240%3A1318&_trksid=p3286.c0.m14 gl
glapook@pacbell.net wrote:
There is an MA-2 for sale on ebay now and these don't come along often. The MA-2 was the penultimate developement of the handheld bubble sextant. It is the Kollsman periscopic sextant without the periscope and it has the same averager. See here for more information: http://home.earthlink.net/%7Es543t-24dst/airnav/index.html Ebay link: http://cgi.ebay.com/Kollsman-Handheld-Aircraft-Sextant-Bubble-Type-1972_W0QQitemZ150284713834QQcmdZViewItem?hash=item150284713834&_trkparms=72%3A1011%7C39%3A1%7C66%3A1%7C65%3A12%7C240%3A1318&_trksid=p3286.c0.m14 gl On Jul 10, 6:54 pm, "Gary J. LaPook" <glap...@pacbell.net> wrote:My fravorite is my MA-1 which isn't a bubble sextant but a pendulous mirror type and my second favorite is the MA-2 with a bubble. If you want a light, simple sextant get a Bendix A-7, it is the lightest bubble sextant I have. gl glap...@pacbell.net wrote:Here is a link to a site with discriptions of many types of bubble sextants:http://home.earthlink.net/%7Es543t-24dst/airnav/index.htmlglOn Jul 5, 3:19 am, glap...@pacbell.net wrote:You should also check the files section of the Yahoo sextant group for more information on sextants.http://groups.yahoo.com/group/Sextants/files/glOn Jul 3, 5:14 pm, bubi352 <benjaminriec...@hotmail.com> wrote:I am new to this group and new to celestial navigation. I currently work as an airline pilot and fly extensively over water at night. I have developed a keen interest in determining my position the old fashion way.Could someone tell me which bubble sextant I should buy? What should I be looking on a bubble sextant? Where can I buy one?Thank you in advance.Bubi
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