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Date: Tue, 14 May 1996 09:34:01 -0700 (PDT)
From: "Peter N.R. Heseltine" <heseltin@hs*.us*.ed*>
To: Carl Heinzl <cgh@ma*.ai*.mi*.ed*>
cc: 72650.220@co*.co*, chris@ab*.co*, darwin@co*.sp*.tr*.co*,
     epic@so*.ha*.ed*, hgartner@ra*.or*, huggins@mi*.us*.ed*,
     lungs@ic*.ne*, mcochran@ne*.co*, ramsdenr@cs*.or*.za*,
     scuba@ma*.ne*, smwixson@in*.co*, techdiver@terra.net
Subject: Re: U/W Video Lights
Carl,

Many thanks for your info. I am back from Germany and England (Cornwall). 
The latter has some of the most interesting places to dive that I've seen 
in years. Many wrecks, remarkable reefs and walls. A must-go-back-and- 
dive sorta place. I met a great chef and diver Kevin Viner who owns

Pennypots Restaurant
Blackwater
Truro, Cornwall TR4 8EY 
ENGLAND
Tel: 44 (0)1209 820347

Some of the best food I have had in years (I live in LA, not exactly the 
gastronomic desert it was 20 years ago). Kevin is moving his restaurant 
to Maenporth Beach in Cornwall, sometime this summer, which also happens 
to be the home of the 

Falmouth Underwater Centre
Maenporth Beach
Falmouth, Cornwall TR11 5HN 
ENGLAND
Tel: 44 (0)1326 250852

Now about the lights. You are right - the weight difference doesn't seem 
to be an issue, though bouyancy (certainly when diving in warm water) 
does make a big difference. Just finding 40lbs of lead in some places is 
difficult (i.e., Papua New Guinea).

The Comet seems to be the way to go. I presume that's a 24v system and 
your 124 is a typo? A coupla questions:

What bulb size (100w, 150w) does that 30' of true color apply to? and 
what is the temp of the bulb? (i.e., true color ~3500K?) 

Are there hot spots if you use two lights and what's the field of cover with 
one or two lights?

Please remind me of the burn times with 100w and 150w bulbs for the Comet.

Many folks (...some folks, ....somebody once) say to me that for your
standard reef stuff in tropical waters 10 - 15' true color is plenty and
that more light washes out the "reality" - whatever that is. This is the
excuse that Light & Motion give for their puny 30w x2 system powered by
Nakita NiCads. By the way their system costs $900 - not far off the price
of two Comets, but I digress. Capt Dan of some Florida city with an
unpronounceable abbreviation (Nwptrichey, Fl), who is prepared to sell me
his used DiveRite system (cheap) says that he gave it up and went to the
StingRay (L&M) system because the 300w - 400w Diverite was too bright. I 
guess I need some assurance from you BigBoys that (a) I will actually be 
able to carry the system to the water (b) I will not be mistaken for a 
nuclear explosion on switching the system on and scare half the Red Sea 
out into the Indian Ocean.

Comments would be greatly appreciated and yes I really do want to to buy 
this thing soon so that I can practice before I go to the Red Sea in August.

Peter Heseltine

On Mon, 13 May 1996 swhipple@hs*.us*.ed* wrote:

> >Return-Path: cgh@ma*.ai*.mi*.ed*
> >X-UIDL: 831617409.003
> >Date: Fri, 3 May 96 00:58:29 -0400
> >From: Carl Heinzl <cgh@ma*.ai*.mi*.ed*>
> >To: heseltin@hs*.us*.ed*
> >Subject: U/W Video Lights
> >X-Status: 
> >
> >
> >Peter,
> >
> >I talked at length with Arnold about the video lights...
> >
> >The problem is, with 100 watts or so of light, you're not going to get
> >a very good depth of field as far as color penetration, 5-10' is what
> >would be expected.  When going with the dual light l24v system, you're
> >going to get better than 30' of real color.  Now, with that in mind,
> >there are two lights to consider (we're back where we started).
> >
> >What's called the
> >Comet 300
> >and the
> >Eclipse 300.
> >
> >The specs are:
> >       Comet   Eclipse
> >watts   300      300
> >dia      6"       5.25"
> >weight   24 lbs   20 lbs
> >bouy     -10-12   -1.5-2.0
> >cost     $725.00  $600.00
> >
> >(cost is per light, plus shipping).
> >
> >The weights are not THAT different, the big difference is in the
> >bouyancy characteristics.  ALl of these numbers are *per light*,
> >meaning, you double the weight or bouyancy characteristics.
> >
> >Then, if you really want to run them longer, EITHER system can be
> >dropped down to 150 watt bulbs, but I would NOT go any lower than that
> >- ever...
> >
> >So, I can certainly understand wanting to go with the Eclipse system
> >over the Comet (from a bouyancy standpoint if nothing else).  Of
> >course, if you have 2 suitcases, you could distribute one light in
> >each suitcase, keeping either one from being TOO heavy.  I've
> >personally put my 40 cu ft pony bottle inside my samsonite suitcase
> >before.
> >
> >I realize that you won't be back until 5/4...  I'll talk to you then..
> >
> >-Carl-
> >
> >
> >
> >
> 
> 

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