论文标题
单镜头设计方面
Single Shot Spectroscopic Design Aspects
论文作者
论文摘要
高时间节奏光谱极化法可以研究磁场演化与等离子体流的可行性。这样的高节奏太阳光谱极化如果开发的话将允许人们在诸如太阳耀斑，突出喷发等喷发过程中研究磁场演化。最近在Udaipur阳性近似天线的多应用太阳能望远镜（MAST）上证明了单个射击太阳光谱。快照光谱是通过使用Lenslet阵列对瞳孔平面进行采样以获取视场（FOV）的多个图像来进行的，然后将其进行准直，然后使准直的光束在准直的模式下通过FP Etalon。随着距FP轴的距离增加，峰值传输波长向更蓝的侧移动。使用具有全宽度最大宽度最大（FWHM）的前滤器小于FP的自由光谱范围（FSR），并结合成像镜头，我们可以在图像平面上获得多个FOV图像，因为我们从光轴径向向外移动，并在光谱中呈蓝色移动。
High time cadence Spectro Polarimetry allows the feasibility of studying magnetic field evolution coupled with the plasma flows. Such a high cadence solar spectropolarimetry if developed will allow one to study magnetic field evolution in eruptive processes like solar flares, prominence eruptions, etc. A single shot solar spectroscopy was recently demonstrated at Multi Application Solar Telescope (MAST) at Udaipur Solar Observatory. The snapshot spectroscopy is performed by sampling the pupil plane using the lenslet array to get multiple images of the field of view (FOV), which are then collimated and the collimated beam is made to pass through an FP Etalon in collimated mode. As the distance from the FP axis increases, the peak transmitted wavelength shift towards the bluer side. Using a prefilter with a full width half maximum (FWHM) less than the free spectral range (FSR) of FP, combined with an imaging lens, we can get multiple images of FOV on image plane with a blue shift in spectra as we move radially outwards from the optical axis.
