Advanced SettingsAdvanced settings

Advanced Settings
Advanced settings are accessed by clicking on the 'Brain button', a feature well-known to users of the original PHD. PHD2 has a considerably larger set of parameters that can be adjusted to optimize your guiding performance. Although these are called "advanced" settings, they are not particularly difficult to understand, and you shouldn't hesitate to explore them. All of the fields on these forms include "tool tips", small message windows that describe each field in some detail. Simply "hover" the cursor over the field to see the tool-tip. In many cases, this will provide all the information you need. Because there are many more settings available, the Advanced Dialog in PHD2 is organized into tabs, and the documentation will follow that model as well.
Global Tab
Guiding Tab
Camera Tab
Mount Tab
AO Tab

Global Tab

Most of the fields on the global tab deal with overall program functions and behavior. Several of them deal with logging and debugging functions, which will be discussed first.
Logging and Debug Output
PHD2 can optionally produce two types of log files: a debug log and a guiding log. Both are highly useful for different reasons. The guiding log is similar to the one produced by PHD, but with extended information. The guide log is intentionally formatted to allow easy interpretation by either a human reader or an external application. For example, the PHDLab application (not part of the PHD2 project) can produce a variety of graphs and summary statistics based on data in the PHD2 guide log. But the log can also be easily imported into Excel or other applications for analysis and graphing. When importing into Excel, just specify that a comma should be used as a column separator The debug log has a complete record of everything that was done in the PHD2 session, so it is very helpful in isolating any problems you have. It also employs a human-friendly (albeit verbose) text format, so it's not difficult to examine the debug log to see what happened. If you need to report a problem with the software, you will almost certainly be asked to provide the debug log file. If you have neither log file available, you are unlikely to get any help.
These two log files will be generated if 'Enable Logging' is checked on the Global tab. The location for the files is controlled by the 'Log File Location' field further down in the dialog. By default, log files are stored in the OS-specific default directory for application data files. In Windows7, for example, the files will be stored in a 'PHD2' sub-folder in the "AppDataLocal" location. This may not be a convenient location, so you can specify a different folder using this edit field.
In some unusual cases, you may need to capture guide camera images, usually to support debugging and problem resolution. This can be enabled by checking the 'Enable Star-image Logging' checkbox.
General Parameters
The remaining controls on the 'Global' tab are well-described by their respective tool-tips, but they are summarized here for completeness:

'Reset Configuration' - restores all settings to their initial values as if PHD2 had been freshly installed

'Image format' - specifies the file format if star-image logging is enabled

'Dither RA only' - for companion apps that use the PHD2 server interface, specifies that dithering should be done only on the RA axis

'Dither scale' - controls the magnitude of the dithering operation

'Noise reduction' - specifies the algorithm to use for handling noisy guide camera images - those for which dark frames are not sufficient. Choices include None, 2x2 mean, and 3x3 median. Both 2x2 mean and 3x3 median will reduce the noise considerably. 3x3 median is especially effective at removing hot pixels and neither will significantly affect guiding accuracy. However, creating a bad-pixel map is likely to be a better solution with less impact on your ability to detect faint stars.

'Time lapse' - imposes a fixed delay between guide exposures. This can be useful if the guide exposures are very short and you don't want to overload either the mount or the camera link with very high traffic rates.

'Focal length' - the focal length of the guide scope (millimeters). This provides one of two parameters needed by PHD2 to compute the image scale and thus report guiding performance in units of arc-seconds. The other parameter required for this is the guide camera pixel size, located on the 'Camera' tab.

'Language' - determines the language used in the PHD2 user interface, subject to available localization. Changing this will usually require a program restart

'Auto restore calibration' - tells PHD2 to automatically reload the most recent calibration data as soon as the equipment is connected. Be sure to read the 'Auto calibration' section of the help file to understand the implications and potential risks of doing this.

'Auto Exposure' - these are the settings that control Auto exposure time.

Min Exposure - the minimum exposure time. PHD2 will not set the exposure time less than this value, even if the guide star SNR is higher than the target SNR value. If the min exposure time is set too low, you could end up sending excessive small corrections to the mount which may not give the best guiding results. Users with AO units would want to set this to a lower value, since rapid small corrections are often desirable with an AO.

Max Exposure - the maximum exposure time. Before a guide star is selected, PHD2 will set the exposure time to the maximum value. Once a guide star is selected, PHD2 will then incrementally decrease the exposure time until the desired SNR is reached.

Target SNR - this is the average SNR value that PHD2 will attempt to achieve by adjusting the exposure time. SNR can fluctuate from frame to frame even with a fixed exposure duration, so be sure to account for that when choosing a target SNR value. PHD2 will reject frames when SNR drops below 3.0. The default value of 6.0 should provide enough of a cushion to prevent fluctuations from causing the SNR to go below 3.0.

結果 (中文) 1:

Advanced SettingsAdvanced settings are accessed by clicking on the 'Brain button', a feature well-known to users of the original PHD. PHD2 has a considerably larger set of parameters that can be adjusted to optimize your guiding performance. Although these are called "advanced" settings, they are not particularly difficult to understand, and you shouldn't hesitate to explore them. All of the fields on these forms include "tool tips", small message windows that describe each field in some detail. Simply "hover" the cursor over the field to see the tool-tip. In many cases, this will provide all the information you need. Because there are many more settings available, the Advanced Dialog in PHD2 is organized into tabs, and the documentation will follow that model as well. Global TabGuiding TabCamera TabMount TabAO TabGlobal TabMost of the fields on the global tab deal with overall program functions and behavior. Several of them deal with logging and debugging functions, which will be discussed first. Logging and Debug OutputPHD2 （可选） 可以产生两种类型的日志文件： 调试日志和指导的日志。出于不同的原因，都非常有用。该指导的日志是类似于生产的博士学位，但与扩展的信息。指南日志是故意进行格式化允许容易解释的人类的读者或外部应用程序。例如，PHDLab 应用程序 （不是 PHD2 项目的一部分） 可以产生各种图和基于 PHD2 指南日志中的数据的汇总统计。但日志也可以轻松地导入到 Excel 或其他应用程序进行分析和制图。导入 Excel 时，只需指定列分隔符调试日志已完整纪录，一切都在 PHD2 会话完成，因此应使用逗号，所以它是非常有用的隔离任何问题你有。它还采用一种人性化 （尽管详细） 文本格式，所以它并不难查看调试日志，以确定发生了什么事。如果您需要报告软件出了问题，你几乎可以肯定将要求提供调试日志文件。如果您有没有可用的日志文件，你就不可能得到任何帮助。如果全局选项卡上选中了启用日志记录，将生成这两个日志文件。文件的位置由日志文件位置字段对话框中走的更远。默认情况下，日志文件存储在应用程序数据文件的特定 OS 默认目录中。在 Windows7，例如，文件将存储 'PHD2' 子文件夹中的"AppDataLocal"的位置。这不可能是一个方便的位置，所以您可以指定一个不同的文件夹使用此编辑字段。在一些不寻常的情况下，您可能需要捕获指南摄像头的图像，通常是为了支持调试和解决问题。这可以通过选中启用明星成像测井' 复选框启用。一般参数在 '全球' 选项卡中的其余控件都充分说明了他们各自的工具提示，但他们在这里总结出于完整性的考虑：重置配置-将所有设置都还原到其初始值，仿佛刚安装了 PHD2图像格式-指定的文件格式，如果启用了明星成像测井'抖动 RA 只'-为使用 PHD2 服务器接口的配套应用程序指定只在 RA 轴上，应做抖动'抖动规模'-控制抖动操作的规模降噪-指定用于处理嘈杂指南照相机图像-那些黑暗的帧是不足够的算法。选择包括无、 2 × 2 的意思和 3 x 3 位数。2 x 2 意思和 3 x 3 位数将大大减少噪声。3 x 3 位数是特别有效的去除热像素为单位），既不会显著影响导向精度。然而，创建一个坏像素映射是可能是更好的解决方案，与你的能力来检测微弱的星光影响较小。'时间流逝'-规定指南曝光之间固定的延迟时间。这可以非常有用的如果指南曝光是非常短的并且你不想超载装载或照相机链接具有很高的通信速率。'焦距长度'-焦距的指南范围 （毫米）。这提供了所需的 PHD2 来计算图像尺度并因而报告指导性能弧秒为单位的两个参数之一。这位于摄像机选项卡上的指南相机像素大小所需的其他参数。'语言'-决定使用在 PHD2 用户界面中，除可本地化的语言。改变这种通常需要程序重新启动'自动还原校准'-告诉 PHD2，自动重新加载最新的校准数据，尽快设备相连。请务必阅读帮助文件以了解所涉问题的 '自动校准' 部分和潜在的风险做这件事。'自动曝光' — — 这些都是控制自动曝光时间的设置。最小暴露 — — 最小暴露时间。PHD2 将不设置曝光时间小于此值，即使导星信噪比大于目标信噪比的值。如果最小曝光时间设置得太低，你可能会过度小更正送座山，不可能给最佳引导的结果。与 AO 单位用户想要将此设置为较低的值，因为快速小更正往往是可取的 ao。最大的暴露 — — 最大曝光时间。选择了导星之前，PHD2 将为最大值设置的曝光时间。一旦选定了导星，PHD2 然后将因此而逐渐降低的曝光时间，直到达到所需的信噪比。目标信噪比-这是 PHD2 将试图通过调整曝光时间实现的信噪比平均值。信噪比可以从一帧一帧甚至随固定的曝光时间，所以一定要为此帐户时选择一个目标信噪比的值。当信噪比下降到低于 3.0 时，PHD2 将拒绝帧。6.0 的默认值应该提供足够的缓冲，避免造成信噪比去 3.0 以下波动。

結果 (中文) 3:

高级设置高级设置
点击按钮进入大脑，特征众所周知的原博士用户。专业有一个相当大的组的参数，可以调整优化你的导向性能。虽然这些都是所谓的“高级”设置，他们不是特别难理解，你应该毫不犹豫地探索。所有的领域对这些形式包括“工具提示”，小的信息窗口，在一些细节描述的各个领域。简单的“悬停”在领域的光看到工具提示。在许多情况下，这将提供所有你需要的信息。因为有许多可用的设置，在专业先进的对话组织成标签，并会跟随模型和文档。
全球标签选项卡选项卡


指导相机安装选项卡
AO标签

全球标签

大部分的领域在全球标签处理程序的功能和行为的整体。他们中的一些处理日志和调试功能，它将首先讨论。
日志和调试输出
PHD2可以产生两种类型的日志文件：调试日志和引导日志。无论是出于不同的原因非常有用。指导日志是一个类似于由博士，但扩展信息。引导记录是故意格式化允许由读者或外部应用程序的简单的解释。例如，应用的phdlab（不是的专业项目的一部分）可以产生各种基于在专业指导日志数据图和汇总统计。但日志也可以很容易地导入到Excel或其他应用程序的分析和作图。当导入到Excel，只指定一个逗号应作为列分离器调试日志具有完整的一切，在专业会议做记录，因此在隔离你有任何的问题是很有帮助的。它还采用了人性化的（虽然罗嗦）文本格式，所以不难检查调试日志看发生了什么事。如果您需要报告该软件的问题，你几乎肯定会被要求提供调试日志文件。如果你没有日志文件，你是不可能得到任何帮助。这两
日志文件将如果“启用日志记录”是对全球产生标签检查。该文件的位置是由“日志文件位置”对话框中的字段进一步下降。默认情况下，日志文件存储在特定的操作系统的默认目录的应用程序数据文件。在windows7中，例如，文件将被存储在一个“专业”的子文件夹中的“AppData 地方”的位置。这可能不是一个方便的位置，你可以使用这个编辑字段指定一个不同的文件夹。在一些特殊情况
，你可能需要捕获指南相机的图像，通常支持调试和解决问题。这可以通过检查“启用明星形象记录”复选框启用。
一般参数
剩余控制在“全球性”的标签都是由各自的工具提示描述，但是他们在这里总结的完整性：

复位配置恢复所有设置为其初始值，如果刚安装的专业图像格式

指定文件格式，如果恒星成像测井是启用

'dither RA仅为伴侣应用，使用专业的服务器接口，指定抖动应仅在RA轴

做“抖动”的控制规模大小的抖动操作

'noise还原”指定使用的算法处理噪声引导摄像机的图像-那些暗帧是不够的。选择包括不平均，2x2，3x3中值和。两2x2 3x3中值平均将大大降低噪声。3x3中值是特别有效的去除热像素也不会显著影响导向精度。然而，创造一个坏像素图可能与你的检测微弱的星星能力影响较小的一个更好的解决方案。时间流逝”

施加固定的延迟之间的引导暴露。这可能是有用的如果引导暴露是很短的，你不想超载或安装或具有非常高的流量Camera Link。

'focal焦距长度的指导范围（毫米）。这提供了一个专业所需的计算图像规模的两个参数，因此报告在弧秒单位的导向性能。这所需要的其他参数是指导相机的像素大小，位于“相机”选项卡。

'language”决定了语言中使用的专业的用户界面，根据现有的定位。改变这通常需要一个程序的启动

'auto恢复校准告诉专业自动加载最新的校准数据，一旦设备连接。请务必阅读帮助文件的“自动校准”部分来了解这样做的意义和潜在风险。

'auto曝光的这些设置，自动控制曝光时间。

分钟暴露的最小曝光时间。专业不会设置曝光时间小于此值，即使导星信噪比高于目标SNR值。如果分钟的曝光时间设置得太低，你就可以发送大量的小的修正安装可能不给最好的指导结果。AO单位用户想要设置到一个较低的值，由于快速的小的修改往往是可取的AO。

最大曝光最大曝光时间。在导星的选择，专业设置的曝光时间的最大值。一旦一个导星是选专业，将逐步减少曝光时间，直到所需的信噪比达到。

目标信噪比-这是平均SNR值，PHD2将试图通过调整曝光时间达到。信噪比的波动可以从帧到帧甚至有一个固定的曝光时间，所以一定要考虑，当选择一个目标信噪比的值。专业将拒绝帧，当信噪比低于3。默认值6，应提供足够的缓冲，防止波动造成的信噪比低于3。