# Introduction

A reflectance panel has known spectral properties and can be used to convert imagery to reflectance values. The process of converting imagery into reflectance values allows for time series comparisons of imagery because it normalizes the data for different lighting conditions.

The reflectance panel is an optional component for the 6X sensor. The reflectance panel is a white balance card used to calibrate 6X images by measuring the reflectance of the card across the spectrum of light captured by the sensor (for example, red, green, blue, near infrared, and/or red edge bands).

<figure><img src="/files/JWzRRyIJd1ZoiJM62dEF" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/ZhPYzli210KBBQbdr1yd" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://support.senterasensors.com/home/6x-series-sensors-user-guide/reflectance-panel/introduction.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.