Microlensing can be seen as a version of strong gravitation lensing where the separation angle of the image formed by light de ection by a massive object is too small to be seen by a ground based optical telescope. As a result, what can be observed is the change in light intensity as function of time; the light curve. Conventionally, the intensity of the source is expressed in magnitudes, which uses a logarithmic function of the apparent ux, known as the Pogson formulae. In this work, we compare the magnitudes from the Pogson formulae with magnitudes from the Asinh formulae (Lupton et al. 1999). We found for small uxes, Asinh magnitudes give smaller deviations, about 0.01 magnitudes smalller than Pogson magnitudes. This result is expected to give signicant improvement in detection level of microlensing light curves.

ABSTRACT
1. INTRODUCTION
2. OBJECTIVES AND METHODOLOGY
3. DATA
4. RESULTS
5. CONCLUSIONS
REFERENCES

• Ichsan Ibrahim(Astronomy Department, Institute Technology of Bandung/Faculty of Syariah, Institut Agama Islam Negeri Ternate)
• Hakim L.Malasan(Astronomy Department, Institute Technology of Bandung)
• Mitra Djamal(Physics Department Institute Technology of Bandung)
• Chatief Kunjaya(Astronomy Department, Institute Technology of Bandung)
• Anton Timur Jelani(Astronomy Department, Institute Technology of Bandung)
• Gerhana Puannandra Putri(Astronomy Department, Institute Technology of Bandung)