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It is good to hear about the 60x X-line objective, but I would say that the old PLAPON 60x/1.42 does not set the bar very high. Perhaps it was better suited for wide-field observation., but when we first used it on our Fluoview system (2006), even our new users noticed that it is not performing that well (both resolution and chromatic aberration). After testing another three objectives of the same model, I swapped it for a 100x/1.4 and was much happier.  
   
Stan

Stanislav Vitha
Microscopy and Imaging Center
Texas A&M University

On Fri, 21 May 2021 10:03:57 +0000, Alison J. North <[log in to unmask]> wrote:
>Hi Abby,
>
>I don't know whether this will be useful information or not, but we recently purchased the 60X X-line objective for our DeltaVision, and I can confirm that the psfs look great and the chromatic aberrations are significantly better than with the original 60x/1.42 oil objective, even when using the Cargille oils (which result in noticeable chromatic dispersion in comparison to when using Olympus oil).  If the 100x X-line objective is anything like as good, then I really should be thinking about buying one myself - with the new 60x we no longer need to do any post-acquisition corrections.
>
>All the best,
>Alison
>
>Alison J. North, Ph.D.
>Senior Director of the Bio-Imaging Resource Center and Research Associate Professor
>The Rockefeller University
>1230 York Avenue
>New York
>NY 10065
>Tel. 212 327 7488 (office - direct line)
>https://www.rockefeller.edu/bioimaging/
>RRID:SCR_017791
>