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Browsing by Author "Raj Kumar, Nalla"

Browsing by Author "Raj Kumar, Nalla"

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  • Optical design of visible emission line coronagraph on Indian space solar mission Aditya-L1 
    Raj Kumar, Nalla; Prasad, B. R; Singh, J; Venkata Suresh, Narra (Springer, 2018-04)
    The ground based observations of the coronal emission lines using a coronagraph are affected by the short duration of clear sky and varying sky transparency. These conditions do not permit to study small amplitude variations ...
  • Scatter studies for visible emission line coronagraph on board ADITYA-L1 mission 
    Venkata Suresh, Narra; Prasad, B. R; Raj Kumar, Nalla; Singh, J (SPIE-The International Society for Optical Engineering, 2017-01)
    Visible emission line coronagraph (VELC) on board ADITYA-L1 mission is an internally occulted mirror coronagraph designed for solar coronal observations over a field of view (FOV) of 1.05 Ro to 3 Ro. To achieve the proposed ...

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