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Cosmic Dawn Intensity Mapper

(CDIM)
(NASA concept for space telescope for intensity mapping)

The Cosmic Dawn Intensity Mapper (CDIM) is a concept for an NASA 83-cm space near infrared telescope for intensity mapping Lyman alpha and H-alpha out to z = 10. It would also map other spectral lines (H-beta, [N II], [O III]) to help distinguish them from the two lines of interest, as well as for their own benefit. The concept is similar to SPHEREx, with a similar wavelength-range and similar use of linearly variable filters (as opposed to a typical spectroscope), but CDIM has better spectral resolution and angular resolution, and rather than all-sky, it would use smaller survey fields, a deep survey of 15 square degrees, a medium survey of 30 square degrees and a wide survey of 300 square degrees.


(spacecraft,telescope,intensity mapping,concept,NASA)
Further reading:
https://cor.gsfc.nasa.gov/studies/probe-study/documents/Cooray-CosmicDawn.pdf
https://www.hou.usra.edu/meetings/landscape2019/eposter/5054.pdf
https://ui.adsabs.harvard.edu/abs/2019BAAS...51g..23C/abstract
https://arxiv.org/abs/1602.05178
WaveLFreqPhoton
Energy
  
0.75μm400THz1.7eVbeginCosmic Dawn Intensity Mapper
7.5μm40THz165meVendCosmic Dawn Intensity Mapper

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