Inventor
A faint nebula takes time to photograph. From a city rooftop, the sky keeps moving and the streetlights keep shining. I put together Purākaash Mk II to work with both constraints.
Keeping a star in place
A 203 mm optical tube gathers the light. As Earth turns, a guide camera watches a star and sends small corrections to the mount. That keeps the object on the same pixels while the main camera collects a long exposure.
The cooled camera limits noise. Narrowband filters let through selected wavelengths emitted by glowing gas, helping a nebula stand out against city light. Each part solves a different problem.
My work was integrating the optics, mount, cameras and software through Master Within. The build also includes a guide in English and Bengali that explains setup, alignment and focus for a student at the instrument.
Other work at the bench
Robotics and Vortex are part of my engineering work. I’m also exploring new equipment through Vishwa Vigyan. For the development and sourcing side of that work, see my wellness R&D profile.
My physics work takes me from an instrument pointed at the sky to a circuit cooled close to absolute zero.