Sentinel-2 Optical

Free High-Resolution Satellite Imagery Viewer

With Off-Nadir Delta, you can view and analyze Sentinel-2 optical imagery directly in your browser. 10-meter resolution for vegetation analysis, land cover mapping, and environmental monitoring.

10m Resolution

High-resolution imagery allows you to see individual fields, buildings, and landscape features.

13 Spectral Bands

Beyond visible light: near-infrared, red edge, and SWIR bands for advanced analysis.

Vegetation Analysis

Calculate NDVI and other vegetation indices to assess plant health and biomass.

Technical Specifications

Spectral Bands

10m

Best Resolution

290 km

Swath Width

5 days

Revisit Time

Band Resolution by Type

10m Bands

B2 (Blue), B3 (Green), B4 (Red), B8 (NIR) — Best for visual analysis and NDVI

20m Bands

B5-B7 (Red Edge), B8A (Narrow NIR), B11-B12 (SWIR) — Vegetation and moisture

60m Bands

B1 (Coastal), B9 (Water Vapor), B10 (Cirrus) — Atmospheric correction

What You Can Do with Sentinel-2 in Off-Nadir Delta

Agriculture Monitoring

Track crop health, irrigation status, and harvest readiness

Land Cover Mapping

Classify forests, water, urban areas, and bare ground

Urban Development

Monitor construction, urban sprawl, and infrastructure

Environmental Monitoring

Track deforestation, coastal erosion, and climate impacts

How It Works

Navigate to Your Area

Pan and zoom to your area of interest anywhere in the world.

Search for Sentinel-2 Data

Select date range and cloud cover threshold to find clear imagery.

Choose Visualization

Select from true color, false color, NDVI, or custom band combinations.

Analyze & Compare

Add multiple dates to compare changes over time.

Frequently Asked Questions

What is Sentinel-2?▼

Sentinel-2 is an optical satellite constellation from the European Space Agency (Copernicus program). It consists of Sentinel-2A (2015) and Sentinel-2B (2017), providing high-resolution multispectral imagery with 13 spectral bands from visible to shortwave infrared (443nm to 2190nm).

What resolution is available?▼

Sentinel-2 provides 10m resolution for RGB (B2, B3, B4) and NIR (B8) bands, 20m for red edge (B5, B6, B7), narrow NIR (B8A), and SWIR (B11, B12) bands, and 60m for atmospheric correction bands (B1, B9, B10). The swath width is 290km.

How often is new data available?▼

The two-satellite constellation provides a 5-day revisit time at the equator and 2-3 days at mid-latitudes due to swath overlap. Level-2A products (atmospherically corrected surface reflectance) are available globally.

What about cloud cover?▼

Each Sentinel-2 scene includes a cloud mask and scene-level cloud cover percentage. You can filter search results by cloud cover. Our interface shows cloud cover for each scene so you can select the clearest imagery for your analysis.

What band combinations are available?▼

True color (B4-B3-B2), false color infrared (B8-B4-B3), agriculture (B11-B8-B2), geology (B12-B11-B2), NDVI vegetation index ((B8-B4)/(B8+B4)), and custom band combinations are all supported. Red edge bands are particularly useful for precise vegetation monitoring.

What is the difference between L1C and L2A?▼

Level-1C (L1C) provides top-of-atmosphere reflectance. Level-2A (L2A) provides bottom-of-atmosphere surface reflectance, atmospherically corrected using the Sen2Cor processor. We recommend L2A for most analysis as it removes atmospheric effects.

Start Viewing Sentinel-2 Imagery

Access optical satellite data with a free account. No GIS software required.

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