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Hi Nathalia,

I'm not sure if it's the same problem, but we have had a similar problem 
twice on the DM IRBE inverted body of our SP1, it turned out to be immersion 
oil that had dripped down the objectives and into the mechanism causing the 
turret to sink slowly - the loss of focus was visible over a short period of 
time using the eyepieces.

Our field service engineer fixed it quickly both times (the first time was 
approximately a year after we got the scope, the second time was much much 
later, due mainly to better cleaning and care from the users once they were 
made aware of the risk).


Cheers

Ray



----- Original Message ----- 
From: "Nathalia Holtzman" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, November 08, 2007 1:58 PM
Subject: Z-drift


> Search the CONFOCAL archive at
> http://listserv.acsu.buffalo.edu/cgi-bin/wa?S1=confocal
>
> Hi all,
> I need some help. We have a 1 year old Leica SP5 inverted scope and pretty
> much all of a sudden we started to get z-drift. Every time you do a time
> lapse, no matter what the z-step or time interval, the system does not 
> start
> at the top of the sample, it moves down significantly and progressively.
> Anything I can do to fix this?
>
> I have called the service rep but would like to fix the problem ASAP. It 
> is
> possible that I am the first person to use the system for this application
> since we upgraded the software and firmware.
>
> Nathalia
>
> -- 
> Nathalia Glickman Holtzman Ph.D.
> Department of Biology SB D328
> Queens College, CUNY
> 65-30 Kissena Boulevard
> Flushing, NY 11367
>
> Office: 718-997-3678
> Lab: 718-997-3517
> Fax: 718-997-3445