22 Jul 2012

MOON

New Crescent Moon, July 20, 2012 - Photo Provided by Muhammad Khatree (MCW member) from Brisbane, QL, Australia

New Crescent Moon, June 21, 2012 - Photo Provided by Tom Grogan (MCW member) from Madison, WI, USA

New Crescent Moon, June 20, 2012 - Photo Provided by Mirza Shahid Basravi (MCW member) from Irvine, CA, USA 

New Crescent Moon, May 22, 2012 - Photo Provided by Mohammad Adlan (MCW member) from Cardiff, Wales, UK 

New Crescent Moon, May 22, 2012 - Photo Provided by AR Sugeng Riyadi (MCW member) from Surakarta, Java, Indonesia 

New Crescent Moon, May 21, 2012 - Photo Provided by Dr. Youssef Ismail (MCW member), San Francisco Bay Area California, USA

New Crescent Moon, April 22, 2012 - Photo Provided by Tom Grogan (MCW member), Madison, Wisconsin, USA

New Crescent Moon, April 22, 2012 - Photo Provided by Zain Ahmed (MCW member), a founding member of the Karachi Astronomers Society, Pakistan


Kesaksian Palsu Rukyatul Hilal Cakung,Jakarta-Indonesia
Atas : posisi Bulan dan Matahari untuk Cakung pada Kamis 19 Juli 2012 saat terbenam berdasarkan hisab sistem kontemporer yang berakurasi tinggi. Nampak Bulan masih berada di bawah batas garis tinggi 2 derajat. Garis tebal penghubung Bulan dan Matahari adalah elongasi. Bawah kiri : hasil perhitungan intensitas cahaya Bulan yang diterima di permukaan Bumi untuk lokasi Cakung dan intensitas cahaya senja, dinyatakan dalam kurva semi-logaritmik. Nampak sejak Matahari terbenam hingga saat Bulan terbenam, intensitas cahaya Bulan sudah lebih besar dibanding cahaya senja. Bawah kanan : nilai kontras Bulan (rasio intensitas cahaya Bulan yang diterima di permukaan Bumi terhadap cahaya senja) dibandingkan dengan ambang batas kontras mata (Cth) sebagai fungsi batas resolusi mata manusia. Nampak sejak Matahari terbenam hingga Bulan terbenam, kontras Bulan tidak pernah melebihi nilai ambang batas kontras mata.




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