Excerpt by an unknown author from the astronomical work Risālat Bulūgh al-waṭar bi-al-ʿamal
bi-al-qamar written by ʿAbd al-Raḥīm ibn ʿAbd al-Karīm al-Qazwīnī al-ʿAjamī al-Shāfiʿī
(d. 1026/1617; GAL II/413; Kaḥḥālah V/206). The excerpt deals with the following astronomical
aspects: The distance of the moon from the orbit of the sun The point in time of the moonrise The mid-position of the moon The half-position of the diurnal and the nocturnal arc The highest grade of sun and moon The half-position of the lunar arc
f. 92b: هذه رسالة العمل بالقمر اذا النجم بالغيم استتر لانه حكي عن بعض الموقتين انه ذات ليلة
كانت كثيرة السحاب والغيم التمس روية بعض الكواكب فلم يعرف منها شيا الا انه في بعض الاوقات
يلوح له القمر خفيا من تحت السحاب
End of the text
f. 94a: وان اسقطت مطالع طلوعه من مطالع توسطه حصل نصف قوسه اومطالع توسطه من مطالع غروبه حصل
نصف قوسه الغربي وان اسقطت مطالع طلوعه من مطالع غروبه حصل قوسه كاملا
Dark brown Oriental Oriental leather binding with fore-edge flap and envelope flap;
envelope flap renewed with red leather; central ornament of the covers: octagon with
lobed perimeter and an infill of floral scrolls; towards the tip of the envelope flap
a small mandorla with lobed perimeter and an infill of leaf scrolls; doublures of
the covers and the envelope flap of paper; doublure of the fore-edge flap of leather
Tre lune Anchor in a circle with trefoil above Coat of arms Glove Countermark: two respectively three letters with rod in single outline and trefoil
above: ?-?, R-A
