> For the complete documentation index, see [llms.txt](https://satdocs.hydrosat.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://satdocs.hydrosat.com/hydrosat-satellite-imagery-overview.md).

# Hydrosat Satellite Imagery Overview

## Getting Started with Hydrosat Data

Hydrosat imagery products are available through a [web application](https://discover.hydrosat.com/) and [SpatioTemporal Asset Catalog (STAC) API](https://stac.hydrosat.com/). To access the imagery catalog, you will need an account.

### Prerequisites

{% stepper %}
{% step %}

#### Request an account and get approved for access.

Fill out the [Request Access form on our website](https://hydrosat.com/data-discovery-platform/).
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{% step %}

#### Receive your invitation email.

Once your account has been created, you will receive an email from <support@hydrosat.com> with your username and temporary password. Check your spam folder if you don't see your invitation email.&#x20;
{% endstep %}

{% step %}

#### Reset your password

Follow the instructions in the email to log in with the temporary password and choose a new password. You have 7 days to log in and reset your password. If your temporary password expires, contact [Support](mailto:support@hydrosat.com) to get a new temporary password.
{% endstep %}

{% step %}

#### You're all set!

Once you've reset your password, you will be able to use your new account to log into the [Data Discovery portal](https://discover.hydrosat.com/). If you need to generate API credentials for use with our [STAC API](https://stac.hydrosat.com/), follow the instructions for [managing API clients](/data-discovery-portal/managing-api-clients.md).

<figure><img src="/files/slMDgVeg5RodUOnBelu7" alt=""><figcaption></figcaption></figure>
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### Ordering Data

Please speak with your organization point of contact to define and submit your order request.

## VanZyl-1

VanZyl-1 (VZ-1) is Hydrosat's first pathfinder mission. Launched in August 2024 on the SpaceX Transporter-11 rideshare, VZ-1 is a technology demonstration and proof of concept for our forthcoming constellation that will redefine space-based thermal infrared remote sensing by enabling daily continuous monitoring of any location on Earth.

<figure><img src="/files/IbNJb2b2he7w3uohRMbk" alt=""><figcaption><p>Hydrosat's VanZyl-1 satellite.</p></figcaption></figure>

VZ-1 hosts two imaging payloads: Hydrosat’s first-generation, proprietary Longwave InfraRed Imager (LIRI) along with its Visible and near-InfraRed Imager (VIRI). LIRI acquires thermal infrared (TIR) imagery at wavelengths between 10.6 and 12.51 micrometers. VIRI images in 7 spectral bands ranging from 458 to 900 nanometers. VZ-1 imagery is acquired mid-morning local time.&#x20;

## VanZyl-2

Hydrosat's second pathfinder mission, VZ-2, launched in June 2025 on the SpaceX Transporter-14 rideshare. VZ-2 hosts the same two sensors as VZ-1, but acquires imagery in mid-afternoon local time.

<figure><img src="/files/vTKuHh6lY37zHuMxwuiP" alt=""><figcaption><p>Hydrosat's VanZyl-2 satellite.</p></figcaption></figure>

## Use Cases

Hydrosat users leverage high-resolution thermal data for a variety of use cases, including:

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-cover data-type="files"></th></tr></thead><tbody><tr><td><strong>Agriculture</strong></td><td><a href="/files/lvOEIcxr9jCV0czoUdil">/files/lvOEIcxr9jCV0czoUdil</a></td></tr><tr><td><strong>Urban Heat</strong></td><td><a href="/files/08ctvrdPi5FcIfDAoxae">/files/08ctvrdPi5FcIfDAoxae</a></td></tr><tr><td><strong>Wildfire</strong></td><td><a href="/files/LKQJ1cmQDM5F14oBXIfF">/files/LKQJ1cmQDM5F14oBXIfF</a></td></tr><tr><td><strong>Energy</strong></td><td><a href="/files/HslUS3KMAl8tR3xaKaVV">/files/HslUS3KMAl8tR3xaKaVV</a></td></tr><tr><td><strong>Oceans</strong></td><td><a href="/files/rAFcswk9Awpez0i3j0os">/files/rAFcswk9Awpez0i3j0os</a></td></tr><tr><td><strong>Defense &#x26; Intelligence</strong></td><td><a href="/files/k4wp8VDPj3XhGSxweepc">/files/k4wp8VDPj3XhGSxweepc</a></td></tr><tr><td><strong>Weather Forecasting</strong></td><td><a href="/files/MNdVLWsTkpeYxl7NWRY0">/files/MNdVLWsTkpeYxl7NWRY0</a></td></tr><tr><td><strong>Forestry</strong></td><td><a href="/files/pCuQ5rxA7VzaCVG0eDHa">/files/pCuQ5rxA7VzaCVG0eDHa</a></td></tr><tr><td><strong>Biodiversity</strong></td><td><a href="/files/IsP9ssnIGmcYskAM8Ran">/files/IsP9ssnIGmcYskAM8Ran</a></td></tr></tbody></table>

## Requesting Support

If you run into any problems, please get in touch with us at <support@hydrosat.com>. We’ll get back to you as soon as we can. Our support team is available 8:00 am to 4:00 pm Pacific time on weekdays.