أرشيف ملتقى أهل الحديث - 1

ـ[الفهمَ الصحيحَ]ــــــــ[10 - 10 - 08, 10:09 ص]ـ

كُتب في أحد المواقع الفلكية مايلي:

وانا أتصفح موقع المشروع الاسلامي لرصد الأهلة لشهر شوال استغربت من الطريقة في ايران في رصد الهلال حيث ومن خلال فهمي للنص انهم تمكنوا من رؤية الهلال قبل مغيب الشمس بعدة ساعات وأنهم وضعوا عدة مناظير في عدة أمكنة متوقع أن يمر من خلالها القمر وقد تمكن الجميع تقريباً من رؤية الهلال وكل ذلك قبل مغيب الشمس.علما أن منطقة أصفهان على حسب معايير أخرى مثل معيار يالوب ومعيار جنوب أفريقيا وحتى معيار جمعية القطيف لايمكن رؤية الهلال فيها حيث مكث الهلال 18 دقيقة تقريباً.

المقالة:

Iran:

Seen: ICOP member Mr.Mohamad Soltanolkotabi said: "Our group consisted of two teams. The first team went to Marshinan on Sep 29th before Sunset. The members were : Mohamad Soltanolkottabi, Abbas Ahmadian , Puyan Ebrahimi & Mehdi Fatehi. We arrived at Marshinan 1 day earlier to adjust our binoculars & telescope for moonsighting on 30th . we used astronomical objects to lock our instruments on several positions where the new crescent would cross on the 30th.We were sure that the crescent would pass through the 20*120 binoculars, 30 minutes before Sunset , through the 20*80 ,15 minutes before Sunset & through the telescope at 15:11 on Tuesday.We also used a 15*70 to look for the crescent on the 30th during the day. Finally Mr. Ahmadian found it via the relative altitude & relative azimuth of the Moon.The first observation occured at 13:01 by Abas Ahmadian , The second at 13:25 by Mohammad Soltanolkottabi & The third at 13:45 by Mehdi FatehiThis time we saw the crescent with the 15*70 binoculars , for a period of several minutes each. At 15:11 , as expected , Mr Ahmadian Saw the crescent through the Telescope , & Mr Fatehi saw it for the second time. After that we followed the moon & were able to see it several times. The other team arrived at Marshinan at 4pm with their 20*110 & 20*80 binoculars . Mr Karimi approached the telescope & was able to see the thin crescent at 4:35 & then Mr. Zolfaghari Rad also could see it for a few minutes at 4:38 . Mr Ahmadian & Mr Karimi tried to photograph the moon. Fortunately they were successful & they could take a number of pictures by a Nikon coolpix 4500 digital camera behind the telescope by the afocal method. These shots were taken at about 5pm. I should say that observing the crescent became more difficult as its altitude decreased .It is interesting to mention that observing the crescent was considerably easier at 13:30 by the 15*70 binoculars than the observation with the telescope around sunset.However Mr. Karimi & Mr. Ahmadian were able to see the crescent one more time after sunset at 5:53.(7 minutes after Sunset).Unfortunately observing the moon by the 20*120 & 20*80 binoculars was not successful . we were sure that the crescent was in the field of view however it was not observable. "

والسؤال هنا لأهل الخبرة هل يمكن مشاهدة الهلال قبل مغيب الشمس؟ علماً أنه لايمكن مشاهدة الهلال الابعد مغيب الشمس وأن يكون بعيداً عن وهجها وان يمكث وقت طويل نسبياً لكي يمكن رؤيته

وقد أجاب أحدهم بما نصه:

شكرا لك أخي على هذه الملاحظة وتطرقك لهذا الموضوع المهم في رصد الهلال والطريقة التي استعملها فريق الرصد في إيران وهو تكتيك يستعمل في الرصد الأجرام السماوية قبل مغيب الشمس.

أحببت أن أوضح ما اعرف عن الموضوع

¥