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From: "Trey" <girvine@be*.ne*>
To: "Simon L Hartley" <shartley@sc*.ed*.au*>, <techdiver@aquanaut.com>
Subject: RE: Choosing a new light (HID 10 vs 18, etc)
Date: Wed, 22 Aug 2001 06:24:29 -0400
Yes, it is focusable - EE would not make one that is not - and the 18 is
better for cave mostly because that is what most people are going to have
and you want the same strength light as your buddies, or they will not see
you over their own light and have to keep making sure you are there.

-----Original Message-----
From: Simon L Hartley [mailto:shartley@sc*.ed*.au*]
Sent: Wednesday, August 22, 2001 2:14 AM
To: techdiver@aquanaut.com
Subject: Re: Choosing a new light (HID 10 vs 18, etc)
Importance: High


Thanks to everyone who replied to my post, very much appreciated.  Lots of
great info.

Looks like Halcyon HID is the way to go for me.  I'm still undecided on the
10 vs 18 watt question though.  Without seeing them side by side it's hard
to judge (same problem I run into with most gear choices in my neck of the
woods (back woods that is  :-)   )).  I'm yet to find a situation where
having more light was a problem (with the possible exception of silty water
where you can get lots of back scatter, but it sounds like the HID cuts
through milky water better than halogen).  On the other hand a longer burn
time (without extra bulk of a larger canister) may be handy when traveling
or just for safety sake.  Plus, as I said I'm not too keen on spending big
bucks right now if with a possible drysuit purchase on the horizon.

One specific question that did arise though.  Do the 10 watt HID lights
have a focusable beam?  If they don't is this a major drawback?

Cheers,

Simon

Simon L Hartley
EnvSM Website Coordinator\First Year Course Coordinator
Associate Lecturer
School of Environmental Science and Management
Southern Cross University
P.O. Box 157
Lismore NSW, Australia 2480
Ph: (02) 66203251 or (61 66) 203 251
Fax:(02) 66212669
E-mail: shartley@sc*.ed*.au*

http://www.scu.edu.au/schools/esm/staff/pages/shartley/

http://www.scu.edu.au/schools/esm/
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