Re: any ideas how lens broke?

Posted by Craig Brideau on
URL: http://confocal-microscopy-list.275.s1.nabble.com/any-ideas-how-lens-broke-tp7582371p7582383.html

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I've had experiences similar to Glen and David's, where an unusual sample
holder or 96 well plate gets the users to smash an out-of-position
objective into the edge of the stage. Typical cost for my Nikon objectives
was about 25% to 40% of new, depending on degree of damage.

Craig


On Fri, Jul 18, 2014 at 5:15 PM, Kurt Thorn <[hidden email]> wrote:

> *****
> To join, leave or search the confocal microscopy listserv, go to:
> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
> Post images on http://www.imgur.com and include the link in your posting.
> *****
>
> On 7/18/2014 2:32 PM, Kate Luby-Phelps wrote:
>
>> *****
>> To join, leave or search the confocal microscopy listserv, go to:
>> http://lists.umn.edu/cgi-bin/wa?A0=confocalmicroscopy
>> Post images on http://www.imgur.com and include the link in your posting.
>> *****
>>
>> Motorized stages on inverted stands plus high $$ objectives = bad karma.
>> We have notched
>> up 3 or 4 in the past ten years including a Nikon 60x TIRF. Painful but
>> difficult to prevent in
>> a heavily used core facility.
>>
>>  We now require users to sign out all oil immersion lenses to try and
> prevent these kinds of experiences.  We think the problems associated with
> keeping the objectives off the scope aren't as bad as the problems caused
> by users accidentally damaging these objectives when they're on the scope.
>  We still have about one objective damaged each year; if we can track down
> the responsible user, we charge them.
>
> Kurt
>
> --
> Kurt Thorn
> Director, Nikon Imaging Center
> http://nic.ucsf.edu/blog/
>