《明史·志·卷七》
只有食分不合，原来推算的大概是因为太阳光大，能够减小月亮的影子，一定会亏食到四五分以上，纔能与原来的推算相合。然而此次观测，是使用暗室窥管，所以能得到这样的分数。如果只凭眼力，或用盆子装水来照映，就会眩耀不定，恐怕还不止这个数了。 
独食分未合，原推者盖因太阳光大，能减月魄，必食及四五分以上，乃得与原推相合，然此测，用密室窥筒，故能得此分数，倘止凭目力，或水盆照映，则眩耀不定，恐少尚不止此也。 
Only the loss of eclipse does not match. The calculation by the original study was probably because the sun light was so strong that it can reduce the moon's shadow, which must loss at least more than four-fifth fractions to then be in agreement with the original study. However, this observation was using the peephole in the darkroom, which is why it can obtain such a fraction. If we only rely on eyesight or use a water-filled bowl to project onto, it would be dazzling and unclear, which would exceed this fraction.