[alt-photo] Re: NuArc UV units question

[Paul Viapiano]

OK, Jeremy...just curious here. How many units do you use to expose 
palladium with a new-ish bulb?

p

----- Original Message ----- 
From: "Jeremy Moore" <jeremydmoore at gmail.com>
To: "The alternative photographic processes mailing list" 
<alt-photo-process-list at lists.altphotolist.org>
Sent: Saturday, April 10, 2010 8:24 AM
Subject: [alt-photo] Re: NuArc UV units question


> No, it's in the head of the unit, you have to disassemble it a little to 
> get
> to it. It's also adjustable, I believe there are directions floating 
> around
> the web on how to adjust the timing of your NuArc if you Google it. I
> adjusted it so 0.1 unit = 1 second when at full blast every time I put in 
> a
> new bulb. Now when I'm getting weird things going on I can look and see 
> how
> much this time has drifted due to bulb age or defect--not scientific, but
> not a bad correlation to quickly see if someone odd is going on. They can
> also be due for a wipe down if they get some crud built up on them.
>
> But because it's adjustable and it's a unitless quantity it doesn't help
> much to compare. Regardless of how many units it takes for you to expose
> your image it's taking about 7 minutes more exposure with the NuArc than 
> the
> sun. I don't think that's a drastic difference, though as the sun in your
> area could be much stronger in the correct wavelengths for gum than your
> NuArc. My NuArc is slower to print with than the sun and my
> UV fluorescent tube box.
>
> On Sat, Apr 10, 2010 at 10:04 AM, david drake
> <daviddrakephoto at sympatico.ca>wrote:
>
>> Loris,
>>
>> Is the light integrator eye in that little hole in the rubber vacuum pad?
>> I can't see were else it could be? Unless it's not in the base of the 
>> unit
>> but up beside the lamp. This would be good to know, especially if one was
>> making very large prints and it go covered up!
>> Also, I do have the 26-1K model.
>>
>> thanks
>> david
>>
>>
>>
>>
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