⭕ 望远镜口径面积与集光力Aperture Area Calculator

使用说明与常见问题How-to & FAQ

「望远镜口径面积与集光力」是什么？What is the Aperture Area Calculator tool?

口径面积 = π D² / 4；集光力与面积成正比，和人眼瞳孔（默认 7 mm）比较；有中央遮挡时扣除副镜面积。本地处理。Aperture area = π D² / 4; light grasp scales with area, compared with a dark-adapted pupil (7 mm by default); a central obstruction is subtracted. Processed locally.

如何使用「望远镜口径面积与集光力」？How do I use the Aperture Area Calculator tool?

在「望远镜口径面积与集光力」中，填写「口径 mm」、「中央遮挡直径 mm」、「瞳孔直径 mm」等参数，结果会随输入实时计算并显示在下方。In the Aperture Area Calculator: Fill in "Aperture mm", "Central obstruction mm", "Pupil diameter mm"; results are recalculated instantly as you type.

为什么口径最重要？Why aperture matters most?

口径决定集光力和分辨率，倍率可以换目镜，口径不能换。Aperture sets light grasp and resolution; magnification is just an eyepiece swap.

能举个计算实例吗？Can you show a worked example?

例如在「望远镜口径面积与集光力」中填 口径 mm = 200，中央遮挡直径 mm = 0，瞳孔直径 mm = 7，结果区显示：有效面积：31,415.9 mm²；平方厘米：314.16 cm²；集光力（相对人眼）：816.3×；极限星等提升：7.28For example, entering Aperture mm = 200, Central obstruction mm = 0, Pupil diameter mm = 7 in the Aperture Area Calculator gives: Effective area: 31,415.9 mm²; Square centimetres: 314.16 cm²; Light grasp vs eye: 816.3×; Magnitude gain: 7.28

哪些输入会被检查？Which inputs are validated?

「望远镜口径面积与集光力」会检查这些输入——「口径 mm」、「瞳孔直径 mm」：必须填写，须大于 0；「中央遮挡直径 mm」：必须填写，不能为负数；绝对值超过 10¹⁵ 的数也会被拒绝。不符合时结果区显示具体提示，不会给出数字。The Aperture Area Calculator checks its inputs — "Aperture mm", "Pupil diameter mm": required, must be greater than 0; "Central obstruction mm": required, cannot be negative; numbers above 10¹⁵ in absolute value are rejected too. When a value fails, the result area names the problem instead of showing a number.

有哪些选项可以调整？What options can I adjust?

「望远镜口径面积与集光力」的设置：「口径 mm」默认 200；「中央遮挡直径 mm」默认 0；「瞳孔直径 mm」默认 7。每次生成结果都按当前设置处理。Settings in the Aperture Area Calculator — "Aperture mm" default 200; "Central obstruction mm" default 0; "Pupil diameter mm" default 7. The result always uses the current settings.

计算结果可以用于作业或工程吗？Can I use the results for homework or engineering?

「望远镜口径面积与集光力」使用教科书标准公式（公式写在说明和常见问题中），适合学习和估算核对；涉及安全的工程设计请以规范和实测为准。The Aperture Area Calculator uses standard textbook formulas (given in the description and FAQ), which is good for learning and checking estimates; for safety-critical engineering follow codes and measured values.

「望远镜口径面积与集光力」免费吗？需要注册吗？Is the Aperture Area Calculator free? Do I need an account?

「望远镜口径面积与集光力」完全免费，无需注册或安装，打开网页即可使用，手机和电脑都能用；输入的内容只在你的浏览器本地处理。The Aperture Area Calculator is completely free with no sign-up or install and works on phones and desktops; what you enter is processed only in your browser.