# INSAT-3DS Imager
*sensor . products*

Six-channel geostationary meteorological imager on INSAT-3DS, covering visible, SWIR, mid-wave IR, water-vapour, and split-window thermal IR bands for full-disc imaging, cloud motion winds, outgoing longwave radiation, snow/cloud discrimination, and sea-surface-temperature retrieval over the Indian region.

## Specifications
- **product status**: operational
- **manufacturer**: isro
- **sensor**: {"measurement_principle":"passive","spectral_range_nm":{"min":520,"max":12500},"instrument_family":"passive-optical","gsd_m":{"native":1000},"channels":[{"spectral_range_nm":{"min":520,"max":1700},"spectral_band_count":2,"name":"VIS/SWIR","gsd_m":{"native":1000}},{"spectral_range_nm":{"min":3800,"max":12500},"spectral_band_count":3,"name":"MWIR/TIR","gsd_m":{"native":4000}},{"spectral_range_nm":{"min":6500,"max":7000},"spectral_band_count":1,"name":"Water vapour","gsd_m":{"native":8000}}],"bit_depth":10,"spectral_band_count":6}
- **deployment context**: orbital
- **entity type**: sensor
- **last verified date**: 2026-06-16
- **verified by**: agency-doc
- **claim status**: agency-sourced
- **provider**: isro
- **attributes**: {"product_status":"operational","manufacturer":"isro","sensor":"{\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":520,\"max\":12500},\"instrument_family\":\"passive-optical\",\"gsd_m\":{\"native\":1000},\"channels\":[{\"spectral_range_nm\":{\"min\":520,\"max\":1700},\"spectral_band_count\":2,\"name\":\"VIS/SWIR\",\"gsd_m\":{\"native\":1000}},{\"spectral_range_nm\":{\"min\":3800,\"max\":12500},\"spectral_band_count\":3,\"name\":\"MWIR/TIR\",\"gsd_m\":{\"native\":4000}},{\"spectral_range_nm\":{\"min\":6500,\"max\":7000},\"spectral_band_count\":1,\"name\":\"Water vapour\",\"gsd_m\":{\"native\":8000}}],\"bit_depth\":10,\"spectral_band_count\":6}","kind":"sensor","deployment_context":"orbital","description":"Six-channel geostationary meteorological imager on INSAT-3DS, covering visible, SWIR, mid-wave IR, water-vapour, and split-window thermal IR bands for full-disc imaging, cloud motion winds, outgoing longwave radiation, snow/cloud discrimination, and sea-surface-temperature retrieval over the Indian region."}
- **relevance**: in-scope

## Editorial
INSAT-3DS Imager is the mission's six-channel geostationary meteorological imager, distinct from the INSAT-3DS Sounder [^mosdac-insat-3ds-payloads][^isro-insat-3ds-imaging]. It covers visible, shortwave-infrared, mid-wave infrared, water-vapour, and split-window thermal-infrared bands for full-disc imaging, cloud motion winds, outgoing longwave radiation, snow and cloud discrimination, and sea-surface-temperature retrieval over the Indian region [^mosdac-insat-3ds-payloads]. The band set follows the INSAT imager class: VIS 0.52-0.72 um, SWIR 1.55-1.70 um, MWIR 3.80-4.00 um, water vapour 6.50-7.00 um, TIR-1 10.2-11.2 um, and TIR-2 11.5-12.5 um [^mosdac-insat-3ds-payloads][^wmo-insat-imager]. Ground sampling is 1 km for VIS/SWIR, 4 km for MWIR and thermal-window bands, and 8 km for the water-vapour band, with 10-bit imaging [^mosdac-insat-3ds-payloads]. The 3DS meteorological payload session on 2024-03-07 returned nominal payload parameters, and the 3DS generation adds updates in radiometric accuracy, black-body calibration, thermal management, and imaging throughput while retaining the six-channel imager role [^isro-insat-3ds-imaging][^mosdac-insat-3ds-payloads].

## Compositional position
- insat-3ds (missions) --[mission_payloads]--> INSAT-3DS Imager

## Sources
- [mosdac-insat-3ds-payloads] | MOSDAC INSAT-3DS payloads | https://www.mosdac.gov.in/insat-3s-payloads | tier=agency-doc | accessed=2026-06-16
- [isro-insat-3ds-imaging] | ISRO INSAT-3DS begins imaging the Earth | https://www.isro.gov.in/INSAT-3DS_imaging_Earth.html | tier=agency-doc | accessed=2026-06-16
- [wmo-insat-imager] | WMO OSCAR instrument record: INSAT imager | https://space.oscar.wmo.int/instruments/view/imager_insat | tier=agency-doc | accessed=2026-06-16
- [wmo-insat-3ds] | WMO OSCAR satellite record: INSAT-3DS | https://space.oscar.wmo.int/satellites/view/insat_3ds | tier=agency-doc | accessed=2026-06-16

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Source: https://eo-atlas.org/products/sensor/insat-3ds-imager
Maintainer: SpectraWorks B.V. (CC-BY 4.0)