YOUNG LUNAR CRESCENT VISIBILITY PREDICTION ON TELESCOPIC–BASED VISUAL OBSERVATION

Judhistira Aria, Utama (2014) YOUNG LUNAR CRESCENT VISIBILITY PREDICTION ON TELESCOPIC–BASED VISUAL OBSERVATION. Proceeding of International Conference On Research, Implementation And Education Of Mathematics And Sciences 2014. (Submitted)

Text 05-Judhistira Aria Utama.rtf Download (465kB)

Abstract

Based on data record of young lunar crescent (hilal) observations around the world, now we have basic scheme of hilal visibility judgement (i.e. hilal can be observed with naked eye, requiring the help of an optical instrument, or hilal can not be observed at all) according to certain physical parameters chosen. Hitherto a mathematical model that predicts the hilal visibility for a particular location only consider Moon–Sun geometry configuration and twilight sky brightness factors. This paper discusses hilal visibility predictions on telescopic–based visual observations which include the age of the observer, the light transmission in the optical instrument, the size of the mirror/lens as light collector and the magnification of the telescope used as well. The model accommodates all of the above factors are then applied to predict the next hilal visibility for the beginning of Ramadan, Shawwal and Dul-hijjah 1435 Hijri (2014 AD).

Item Type:	Article
Uncontrolled Keywords:	Hilal, Hilal Visibility, Telescope
Subjects:	Prosiding > ICRIEMS 2014 > PHYSICS & PHYSICS EDUCATION
Divisions:	Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA) > Pendidikan Fisika > Fisika
Depositing User:	Eprints
Date Deposited:	07 Nov 2014 04:28
Last Modified:	07 Nov 2014 04:28
URI:	http://eprints.uny.ac.id/id/eprint/11536

Actions (login required)

View Item