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Multiphoton microscope


A multi photon microscope is a Fluorescence Microscope in which more than one Excitation Photons are used to excite the fluorophores.

How to treat 2-photon data in Huygens


Mind that the multi-photon option in a License String doesn't activate a new Microscope Type: the number of photons involved in the fluorescence process is a Microscopic Parameter that you have to enter when describing the image. There are 'widefield' and 'confocal' multi photon microscopes; the multi photon option gives access to both.

For 2-photon microscopes, the Multi photon excitation parameter must be set to two.

Very large or no pinhole


If there is a non-descanned detector (NDD), or a very large (say > 10 Airy Disks) pinhole, the contribution of the pinhole to the image formation can be ignored. In this case the microscope type can be set to Wide Field Microscope. This will result in more realistic values for the Nyquist rate than a confocal setting.

Fairly large pinhole


If there is a pinhole in the order of a couple of Airy Disks, typically 500 nm Back Projected radius, it must be taken into account. So in this case the microscope type type should be set to confocal, and the right Back Projected Pinhole Radius specified.

Contact Information

Scientific Volume Imaging B.V.

Laapersveld 63
1213 VB Hilversum
The Netherlands


Phone: +31 (0)35 64216 26
Fax: +31 (0)35 683 7971
E-mail: info at svi.nl

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