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Super-resolution Fluorescence Microscopy

Super-resolution Fluorescence Microscopy

Super-resolution fluorescence microscopy (SRFM) provides a better resolution than conventional fluorescence microscopy by reducing the point spread function (PSF). PSF is the light intensity distribution from a point that causes it to appear blurred. Due to PSF, each fluorescing point appears bigger than its actual size, and it is the PSF interference of nearby fluorophores that causes the blurred image. Various approaches to achieving higher resolution through SRFM have recently been developed.

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Updated: Jun 19, 2026

Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy (FSM)

Live Cell Imaging of F-actin Dynamics via Fluorescent Speckle Microscopy (FSM)

Published on: August 5, 2009

Stellar speckle imaging by reference to different-colored specklegrams.

N Baba, S Kuwamura, N Miura

|October 28, 2009

Summary

This summary is machine-generated.

Stellar specklegrams captured at different wavelengths show correlated bright speckle positions. Applying a shift-and-add technique to one wavelength

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Area of Science:

Astronomy and Astrophysics
Optical Imaging

Background:

Stellar speckle interferometry captures high-resolution astronomical images.
Speckle patterns are wavelength-dependent but exhibit correlations.

Purpose of the Study:

To investigate the relationship between stellar specklegrams at different wavelengths.
To demonstrate a novel method for generating high-resolution images at one wavelength using data from another.

Main Methods:

Analysis of stellar specklegrams acquired simultaneously at multiple wavelengths (450 nm and 800 nm).
Application of the shift-and-add algorithm to specklegram data.
Comparison of image reconstruction results across different wavelengths.

Main Results:

The brightest speckle positions in specklegrams at 450 nm and 800 nm show near-coincidence.
Shift-and-add processing of 450 nm specklegrams successfully generated a high-resolution image at 800 nm.

Conclusions:

Stellar specklegrams contain transferable high-resolution information across different wavelengths.
The shift-and-add technique offers a powerful method for multi-wavelength astronomical imaging.