Hi Sean, Exactly I very much doubt I can better the performance of some of my shorter FL eps as you say but it is the convenience of a longer eye relief for my daughter to get in on some of my telescope time. The alternative would be to use a high quality amplifier ...
C. using a telescope to find the way. D. carrying a person of over 60 kilograms. 查看完整题目与答案 前列腺癌主要发生于: A. 外周区和移行区 B. 中央区和移行区 C. 纤维基质肌肉区和中央区 D. 尿道周围组织和纤维基质肌肉区 E. 尿道周围组织和外周区 查看完整题目与答案 参...
telescope surgeon Posts:24,858 Joined:30 Jan 2004 Posted05 July 2004 - 10:02 PM i believe the 25mm, 20mm, and 17mm explorer ep's have 4 elements, while the shorter versions have 3. whether or not they're technically kellners, they perform decently for the price. ...