Mt. Abu Faint Object Spectrograph and Camera – Pathfinder (MFOSC-P) is an imager-spectrograph developed for the Physical Research Laboratory (PRL) 1.2m telescope at Gurushikhar, Mt. Abu, India. MFOSC-P is based on a focal reducer concept and provides seeing limited imaging (with a sampling of 3.3 pixels per arc-second) in Bessell’s B, V, R, I and narrow-band H-α filters. The instrument uses three plane reflection gratings, covering the spectral range of 4500-8500Å, with three different resolutions of 500, 1000, and 2000 around their central wavelengths. MFOSC-P was conceived as a pathfinder instrument for a next-generation instrument on the PRL’s 2.5m telescope which is coming up at Mt. Abu. The instrument was developed during 2015-2019 and successfully commissioned on the PRL 1.2m telescope in February 2019. The designed performance has been verified with laboratory characterization tests and on-sky commissioning observations. Different science programs covering a range of objects are being executed with MFOSC-P since then, e.g., spectroscopy of M-dwarfs, novae & symbiotic systems, and detection of H-α emission in star-forming regions. MFOSC-P presents a novel design and cost-effective way to develop a FOSC (Faint Object Spectrograph and Camera) type of instrument on a shorter time-scale of development. The design and development methodology presented here is most suitable in helping the small aperture telescope community develop such a versatile instrument, thereby diversifying the science programs of such observatories.

公吨。Abu Faint物体光谱仪和照相机–探路者（MFOSC-P）是为位于山古鲁西喀尔的物理研究实验室（PRL）1.2m望远镜开发的成像仪。印度阿布。MFOSC-P基于减焦器概念，并在Bessell的B，V，R，I和窄带H- α滤波器中提供有限的成像效果（每弧秒采样3.3个像素）。该仪器使用三个平面反射光栅，覆盖4500-8500的光谱范围埃，在其中心波长附近具有三种不同的分辨率，分别为500、1000和2000。MFOSC-P被认为是PRL 2.5m望远镜上下一代仪器的探路仪，该仪器即将在Mt. 阿布 该仪器于2015-2019年开发，并于2019年2月在PRL 120万望远镜上成功调试。设计性能已通过实验室特性测试和空中调试观测得到验证。从那时起，就使用MFOSC-P执行了涵盖一系列物体的不同科学程序，例如M矮星，新星和共生系统的光谱学以及H- α的检测在恒星形成区域的发射。MFOSC-P提供了一种新颖的设计和具有成本效益的方式，可以在更短的开发时间内开发FOSC（淡化对象光谱仪和照相机）类型的仪器。这里介绍的设计和开发方法论最适合帮助小口径望远镜社区开发这种多功能仪器，从而使这种观测站的科学程序多样化。