NavList:

   

Reply

If you had a choice between a C&P Horizon Ultra and a
C&P Pelorus which would you choose? Money isn't the
issue.

The use is the full breadth of uses to which you might
put a sextant with an equal balance between
star/planet sights, sun sights and coastal nav stuff -
distance off, horizontal bearing etc.

For those unfamiliar the key differences between the
two instruments are:

1) both use the same frame and "running gear";

2) the Horizon Ultra has a whole horizon mirror,
polarisers in both sets of shade glasses and
Schueler's double prism to get verticality right. In
other words it's a specialist sun machine;

3) the Pelorus has standard shades, an astigmatiser
for stars and planets, and an unusual horizon mirror
that is about 70% silvered in the a centre vertical
strip and unsilvered on either side. It is designed to
be very effective with dim stars but still OK brighter
objects.

I guess my current thinking is that the polarisers are
nice and make sun brightness and horizon clarity very
easy to get just right but that the Polaris is
proabably better for stars as it isn't hampered by the
known issues of a whole horizon mirror. On balance
what I want is the Pelorus with the polarisers as
well. I expect that verticality of the instrument will
not be an issue when using the astigmatiser but that
you'll just have to rock like you always do when doing
sun/moon.

Love to hear your views, and particularly if anyone
has used the Polaris or the Horizon Ultra.

Regards

Pelorus

Send instant messages to your online friends http://au.messenger.yahoo.com

   

Reply