leica_sp8_mp
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leica_sp8_mp [2021/01/17 04:44] bioimaging [Microscope Turn Off procedures] |
leica_sp8_mp [2021/06/23 12:06] bioimaging [Objectives] |
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| {{ :confocal_vs_2photon.png?0x300}} The Leica SP8 MP is a both a confocal and //multi-photon microscope// able to generate high-resolution three-dimensional images of thick specimens. Multi-photon excitation (most commonly two photon excitation) is particularly advantageous for imaging thicker samples. Rather than exciting the fluorophore with one photon, multi-photon excitation is produced by two or more lower energy photons which can penetrate deeper in the sample. Moreover, contrarily to confocal, the multi-photon excitation light will only achieve sufficient intensity to cause fluorescence in a specific region. Because of this, no pinhole is needed in multi-photon microscopy to exclude the light from out-of-focus planes and achieve optical sectioning. The Leica SP8 MP is an upright microscope equipped with water and glycerol immersion objectives especially suitable for intra-vital and thick samples immersed in water or glycerol imaging. In confocal mode, its scanning unit includes a spectral detector PMT to be used with a 488 nm laser for excitation. In multi-photon mode, its Insight DS+ Dual pulsed laser can be tuned from 680 to 1300 nm and has a second laser line emitting at 1041 nm, to be used with four non-descanned detectors with specific filtersets: two PMTS and two HyD detectors (hybrid detectors with 45% QE compared to ~25% QE for conventional PMT). With this system you can perform optical sectioning high resolution imaging of fluorescent samples that are two thick for confocal microscopes such as the [[zeiss_lsm_880|Zeiss LSM 880]] or the [[zeiss_lsm_710|Zeiss LSM 710]], albeit with a slightly lower resolution. If you do not need optical sectioning and your sample is thin, check out a widefield system instead, such as the [[zeiss_cell_observer|Cell Observer]] or the [[nikon_eclipse_ti|Nikon Eclipse Ti]]. If your personal computer cannot handle all the data you collected, check out the [[big_guy|Big Guy]] or [[colossus|Colossus]]. | {{ :confocal_vs_2photon.png?0x300}} The Leica SP8 MP is a both a confocal and //multi-photon microscope// able to generate high-resolution three-dimensional images of thick specimens. Multi-photon excitation (most commonly two photon excitation) is particularly advantageous for imaging thicker samples. Rather than exciting the fluorophore with one photon, multi-photon excitation is produced by two or more lower energy photons which can penetrate deeper in the sample. Moreover, contrarily to confocal, the multi-photon excitation light will only achieve sufficient intensity to cause fluorescence in a specific region. Because of this, no pinhole is needed in multi-photon microscopy to exclude the light from out-of-focus planes and achieve optical sectioning. The Leica SP8 MP is an upright microscope equipped with water and glycerol immersion objectives especially suitable for intra-vital and thick samples immersed in water or glycerol imaging. In confocal mode, its scanning unit includes a spectral detector PMT to be used with a 488 nm laser for excitation. In multi-photon mode, its Insight DS+ Dual pulsed laser can be tuned from 680 to 1300 nm and has a second laser line emitting at 1041 nm, to be used with four non-descanned detectors with specific filtersets: two PMTS and two HyD detectors (hybrid detectors with 45% QE compared to ~25% QE for conventional PMT). With this system you can perform optical sectioning high resolution imaging of fluorescent samples that are two thick for confocal microscopes such as the [[zeiss_lsm_880|Zeiss LSM 880]] or the [[zeiss_lsm_710|Zeiss LSM 710]], albeit with a slightly lower resolution. If you do not need optical sectioning and your sample is thin, check out a widefield system instead, such as the [[zeiss_cell_observer|Cell Observer]] or the [[nikon_eclipse_ti|Nikon Eclipse Ti]]. If your personal computer cannot handle all the data you collected, check out the [[big_guy|Big Guy]] or [[colossus|Colossus]]. | ||
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| + | [[https://www.drbio.cornell.edu/cross_sections.html|Two-photon action cross sections - Cornell University]] | ||
| {{:info.png?25|}} Click on the image on the right to see it in higher detail | {{:info.png?25|}} Click on the image on the right to see it in higher detail | ||
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| ==== Objectives ==== | ==== Objectives ==== | ||
| ^ Magnification ^ Model ^ Immersion ^ NA ^ WD (mm) ^ Reference ^ | ^ Magnification ^ Model ^ Immersion ^ NA ^ WD (mm) ^ Reference ^ | ||
| - | | 25x | HC FLUOTAR VISIR | Water | 0.95 | 2.50 | 15506374 | | + | | 25x | HC FLUOTAR VISIR | Water | 0.95 | 2.50 | [[https://www.leica-microsystems.com/objectivefinder/detail/objective/506374/|15506374]] | |
| - | | 63x | HC PL APO Glyc CORR CS2 | Glycerol | 1.30 | 0.30 | 15506353 | | + | | 63x | HC PL APO Glyc CORR CS2 | Glycerol | 1.30 | 0.30 | [[https://www.leica-microsystems.com/objectivefinder/detail/objective/506353/|15506353]] | |
| ==== Filtersets (Ocular) ==== | ==== Filtersets (Ocular) ==== | ||
leica_sp8_mp.txt · Last modified: 2024/01/28 12:05 by bioimaging
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