Re: Sorry to beat a dying horse, but more questions on lighting and Cyanotypes...

I have a 48" ballast which is large (like a shoplight) but I think
i'll get two or four 24" ballasts and buy four 24" bl bulbs and
fashion them together.

This is good news about digital negatives as the biggest *anything* I
have to print is 4x5. Also good news that the exposure time is
shorter.

Thanks for the info !

Cheers,
Alex

-- 
Cheers,
Alex Swain (fo)
http://www.zoom.sh
On Fri, 17 Dec 2004 15:44:07 +0200, Loris Medici <loris_medici@mynet.com> wrote:
> 
> AFAIK, BL tubes (especially the high power ones like 30W, 40W) need
> special ballasts. I use special "electronic" ballasts designed
> specifically for high power UV tuves - one for each tube.
> 
> Regards,
> Loris.
> 
> > -----Original Message-----
> > From: Alex Swain [mailto:fotoobscura@gmail.com]
> > Sent: Friday, December 17, 2004 3:12 PM
> > To: alt-photo-process-l@sask.usask.ca
> > Subject: Re: Sorry to beat a dying horse, but more questions
> > on lighting and Cyanotypes...
> >
> >
> > I can handle 2 hours, no problem.  I am not outputting at a
> > high rate.  However if BL bulbs will do the same in 10-30
> > minutes I'll just go buy a few of those tubes.
> 
>