# HAMLET Spectral Imager
*sensor . products*

HAMLET is a hyperspectral imager for ESA's RAMSES Apophis mission, based on cosine HyperScout heritage and adding a SWIR channel for asteroid composition observations.

## Specifications
- **product status**: in-development
- **manufacturer**: cosine
- **sensor**: {"instrument_family":"passive-optical","measurement_principle":"passive","spectral_range_nm":{"min":650,"max":1500},"spectral_band_count":45,"gsd_m":{"native":5},"notes":"Two-channel design: Ch1 650-960 nm (VNIR), Ch2 960-1500 nm (SWIR). Advanced version of HyperScout-H flying on Hera; adds SWIR channel for broader mineralogy coverage including OH features near 1.4 um. High-resolution CMOS detectors. Under development by cosine Italia (ESA RAMSES mission). Band count and GSD not publicly confirmed at PDR stage; see research_notes.unverified. Launch target April 2028."}
- **deployment context**: orbital
- **entity type**: sensor
- **last verified date**: 2026-06-11
- **verified by**: operator
- **claim status**: unclaimed
- **provider**: cosine
- **attributes**: {"kind":"sensor","product_status":"in-development","manufacturer":"cosine","description":"HAMLET is a hyperspectral imager for ESA's RAMSES Apophis mission, based on cosine HyperScout heritage and adding a SWIR channel for asteroid composition observations.","sensor":"{\"instrument_family\":\"passive-optical\",\"measurement_principle\":\"passive\",\"spectral_range_nm\":{\"min\":650,\"max\":1500},\"spectral_band_count\":45,\"gsd_m\":{\"native\":5},\"notes\":\"Two-channel design: Ch1 650-960 nm (VNIR), Ch2 960-1500 nm (SWIR). Advanced version of HyperScout-H flying on Hera; adds SWIR channel for broader mineralogy coverage including OH features near 1.4 um. High-resolution CMOS detectors. Under development by cosine Italia (ESA RAMSES mission). Band count and GSD not publicly confirmed at PDR stage; see research_notes.unverified. Launch target April 2028.\"}","bus":null,"ground_segment":null,"launcher":null,"analysis_service":null,"deployment_context":"orbital"}
- **technology**: optical-spectral-sensing

## Editorial
HAMLET (HyperScout for Apophis MultispectraL Exploration and Taxonomy) is a two-channel spectral imager under development by cosine Italia for ESA's RAMSES mission to asteroid Apophis. The instrument extends the cosine HyperScout heritage with a SWIR channel: Channel 1 covers 650-960 nm (VNIR) and Channel 2 covers 960-1500 nm (SWIR), giving a combined range of 650-1500 nm optimised for asteroid mineralogy including hydroxyl absorption features near 1.4 um. High-resolution CMOS detectors are used in each channel. Exact band count, GSD, and field of view are not publicly disclosed at the current development stage; a Preliminary Design Review was held by cosine Italia in 2025. HAMLET is designed to characterise the composition of Apophis ahead of and during the 2029 Earth close approach. Launch is targeted for April 2028.[^epsc-dps-2025-hamlet][^cosine-hamlet-pdr]

## Compositional position
- ramses (missions) --[mission_payloads]--> HAMLET Spectral Imager

## Sources
- [epsc-dps-2025-hamlet] | HAMLET abstract, EPSC-DPS 2025 | https://meetingorganizer.copernicus.org/EPSC-DPS2025/EPSC-DPS2025-1607.html | tier=peer-reviewed | accessed=2026-06-11
- [cosine-hamlet-pdr] | cosine Italia hosts PDR for HAMLET Spectral Imager, cosine.eu | https://www.cosine.eu/cosine-italia-hosts-preliminary-design-review-for-hamlet-spectral-imager-on-esas-ramses-mission-to-asteroid-apophis/ | tier=operator-press | accessed=2026-06-11
- [ramses-wikipedia] | Ramses spacecraft, Wikipedia | https://en.wikipedia.org/wiki/Ramses_(spacecraft) | tier=community | accessed=2026-06-11

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