Accurate calibration of the Telescope Array Fluorescence Detector (TA-FD) and the atmosphere is crucial for precise analysis of Ultra High Energy Cosmic Rays (UHECRs) using the atmospheric fluorescence method. This paper focuses on two key aspects of calibration: the pointing direction of the TA-FD and the atmospheric transparency as measured by the Vertical Aerosol Optical Depth (VAOD). The pointing direction of the TA-FD was analyzed with an accuracy of ±0.03 degrees using the Opt-copter, a drone-mounted LED light source. The impact of this pointing accuracy on cosmic ray analysis, including the biases and systematic uncertainties it introduces, is estimated. Additionally, the TA experiment continuously observes UHECRs with the FD, capturing air showers induced by primary UHECRs. Monthly VAOD values, determined through Central Laser Facility (CLF) operation, exhibit a seasonal dependence. Incorporating this seasonal variation into air shower analysis can improve the accuracy of primary energy and Xmax measurements, along with the associated systematic uncertainties.