## 5 Conclusions  
In this work, a successful design for capturing bioluminescence was tested and compared on various celestial body images. To do this, we have defined a physical model of Barn Door Star Tracker. Then, we used an experimental approach to estimate low-light conditions of lens performance in recording. Multiple images were produced using this experiment, with the total exposure time ranging from 40 to 90 min (500-700 frames). The images had close to zero noise, which was possible only because of stacking. This is in contrast to the last experiment performed in 2009 by [PERSON] in which a single exposure was taken that lasted 30 min. However, a 30 min exposure would produce too much thermal noise in a CMOS camera at room temperature. Therefore, we concluded that \begin{table}
\begin{tabular}{c c} \hline \hline
**Existing Work** & **Contribution towards Novelty** \\ \hline Current work exists as separate concepts about & This is a one-stop paper that combines all of \\ shot noise, read noise, tracker, long-exposure & these concepts to achieve better results in the \\ images, lens type, sensor type, and & fields of human bioluminescence and \\ image stacking. & astro-photography. \\ \hline Existing work only involves the use of & This paper uses a CMOS-based camera sensor \\ CCD-based camera setups, which tend to be & to do the same task at a much lower cost, \\ more expensive. & which will make this field of study more \\  & accessible to researchers across the globe. \\ \hline Existing work uses an exposure time of 20–30 & Current setup proposes a method to reduce the \\ min per image, which heats the camera sensor & exposure time to 2–3 min per image, taking \\ and leads to many complications. This requires & multiple images, and then stacking them to \\ a much more sophisticated setup and a & improve the SNR. \\ higher cost. & The paper has shared the details of a new \\ \hline No previous work has used a mechanical star & the paper has shared the details of a new \\ tracker (which brings down the cost from Rs. & design for a star tracker that is completely \\
20,000 to \textgreater{}Rs. 2500). & mechanical, called a “Barn Door Tracker”, \\  & producing similar results. \\ \hline \hline \end{tabular}
\end{table} 
Table 4: Comparison of existing work vs. proposed work. instead of taking single exposures, we could take multiple frames of the same subject and stack them using the process mentioned in the paper. In theory, this allowed us to image any low light-emitting source just by adjusting the number of frames taken (to obtain the desired signal-to-noise ratio). The apparatus, making of a Barn Door Tracker, the process of stacking, and the ultimate production of clear images of extremely dim objects are shared in the paper. These conditions allowed us to simulate synthetic data with the help of digital signal-processing techniques. After defining and using comparison criteria, we conclude that the proposed methods are more appropriate for bioluminescence imaging. On real data, we have noticed that the Barn Door Star Tracker method has improved the contrast and resolution of these images. To confirm this study, the work can be further extended, and CCD cameras can be used with Starstax software instead of DSS to capture human bioluminescence much more easily. This could open the door to a much wider data set to look at software such as Tableau and Power BI to find patterns between different functions of the body. This will help us to understand human evolution in a much deeper sense. This work has attempted to understand what is inside the human body by looking outside into the universe. Conceptualization, R.C. and V.I. ; methodology, D.G. and V.S. ([PERSON]); software, R.C. and V.I. ; validation, M.J. and V.S. ([PERSON]); formal analysis, M.J. and V.S. ([PERSON]); investigation, D.G. and V.S. ([PERSON]); resources, Z.L., R.C. and V.I. ; data curation, D.G. and V.S. ([PERSON]); Writing--original draft preparation, R.C. and V.I. ; writing--review and editing, D.G., V.S. ([PERSON]), M.J. and V.S.