NavList:

   

Reply

Dear list members,
I need an advise about bubble (aircraft) sextants.

(I need one to measure altitudes from my balcony.
The balcony is too shaky to use the ordinary liquid art. horizon.
The "professional bubble attachment" from Celestaire is too
expensive, so I am looking for an aircraft bubble sextant;
they are typically sold on e-bay for about $100 or less.
Seems to be a good value if it is usable).

I know little about bubble sextants (what I know mostly comes
from Ifland's book "Shooting the stars" and from the info available
on the Internet. So I will be grateful for any advise how to choose
one.

The sellers of all air sextants on e-bay say explicitly that they do
not
understand how the thing works, so they are unable to tell you whether
it works at all.

One major potential problem (to my understanding) is the bubble.
I know the guy who bought a British Mk IXA, it had no bubble at all,
and the guy inquired on this list (few years ago) how to restore it.
He has a web site where he explains how he filled a bubble chamber
with hexan and so on... and had to seal and reseal it, and it
is still leaking, etc. This seems too complicated to me.

So my specific question is: is it possible to buy a WORKING aircraft
sextant
on e-bay, and what is the best way to do it. And what models to look
for.

Alex.


--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to NavList@fer3.com
To , send email to NavList-@fer3.com
-~----------~----~----~----~------~----~------~--~---

   

Reply