Freefly
Gremsy VIO F1 for Freefly Astro/Alta X Gen 2
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The Gremsy VIO F1 is a lightweight, plug-and-play EO/IR payload that pairs a 4K zoom camera, a 640 × 512 radiometric thermal camera, and an integrated laser rangefinder in a single compact gimbal. Configured here for the Freefly Astro and Alta X Gen2, it mounts through the Smart Dovetail isolated mount and speaks the Pixhawk Payload Bus standard, so it integrates cleanly into the Freefly platform. At about 854 g it delivers visual zoom, thermal imaging, and precise distance measurement in one payload, well suited to inspection, mapping support, and search-and-rescue work.
Triple-sensor EO/IR payload for the Freefly Astro and Alta X Gen2: 4K zoom, 640 × 512 radiometric thermal, and a laser rangefinder in one 854 g gimbal.
Features
- 4K zoom camera with 20× optical zoom, 30× super-resolution zoom, and up to 240× combined maximum zoom, built on an 8.51 MP 1/2.5-inch CMOS sensor shooting 3840 × 2160 at 30 fps
- 640 × 512 radiometric thermal camera at 60 Hz with ≤ 50 mK sensitivity and 1× to 8× zoom, for temperature data and clear thermal imagery day or night
- Integrated laser rangefinder measuring 0 to 2400 m at 1 Hz (0 to 1200 m at 10 Hz) with 0.1 to 0.5 m accuracy for precise target distance
- EO/IR object tracking that auto-tracks and auto-centers a selected target, keeping it framed while zooming or repositioning the gimbal
- Compatible with the Freefly Astro and Alta X Gen2 via the Smart Dovetail isolated mount and the Pixhawk Payload Bus standard
- Multiple control interfaces (UART, Ethernet, SBUS) for flexible integration
- Compact and lightweight at approximately 854 g, within the Alta X Gen2's 1.5 kg Smart Dovetail payload capacity
Specifications
| Specification | Value |
|---|---|
| Payload type | EO/IR (visual zoom + thermal + laser rangefinder) |
| Compatible platforms | Freefly Astro, Freefly Alta X Gen2 (Smart Dovetail / Pixhawk Payload Bus) |
| Weight | 854 g (1.88 lbs) |
| Dimensions | 173 × 148 × 159 mm |
| Zoom camera sensor | 8.51 MP, 1/2.5-inch CMOS |
| Video resolution | 3840 × 2160 (4K) at 30 fps |
| Optical zoom | 20× optical, 30× super-resolution, up to 240× combined |
| Focal length | 4.4 to 88.4 mm |
| Thermal camera | 640 × 512 radiometric, 60 Hz |
| Thermal sensitivity | ≤ 50 mK |
| Thermal zoom | 1× to 8× |
| Thermal field of view | 32° horizontal, 14 mm effective focal length, fixed focus |
| Laser rangefinder | 0 to 2400 m @ 1 Hz; 0 to 1200 m @ 10 Hz |
| Rangefinder accuracy | 0.1 to 0.5 m |
| Object tracking | EO/IR auto-track and auto-center |
| Control interfaces | UART, Ethernet, SBUS |
Who this is for
- Public-safety and search-and-rescue teams flying Freefly Astro or Alta X Gen2 who need visual zoom, thermal, and target ranging in a single payload
- Utility, energy, and infrastructure inspectors identifying hot spots and reading detail at distance without flying closer
- Security and monitoring operators who need to lock onto and track a subject while maintaining standoff
- Mapping and survey crews who want laser distance measurement and thermal alongside high-zoom visual imagery
- Freefly platform operators standardizing on Smart Dovetail payloads for quick swaps across their fleet
Installation and notes
- This configuration is intended for the Freefly Astro and Alta X Gen2 using the Smart Dovetail isolated mount. Confirm you have the correct mount and adapter for your airframe before ordering.
- The VIO F1 uses the Pixhawk Payload Bus standard. Follow the Freefly and Gremsy integration documentation to mount, wire, and configure the payload, and update platform firmware as recommended.
- On the Alta X Gen2, the Smart Dovetail supports payloads up to 1.5 kg; the VIO F1 at approximately 854 g is within that limit.
- The VIO series ships in two versions, VIO F1 and VIO G1. This listing is the F1. Verify the version before ordering if a specific configuration is required.
- Do not point the thermal camera directly at the sun or other intense energy sources, which can permanently damage the sensor.
FAQ
Which aircraft does this VIO F1 configuration fit?
This listing is set up for the Freefly Astro and Alta X Gen2, using the Smart Dovetail isolated mount and the Pixhawk Payload Bus standard. Confirm your mount and adapter before ordering.
What sensors are on board?
Three: a 4K zoom camera (20× optical / 30× super-resolution / up to 240× combined) on an 8.51 MP 1/2.5-inch sensor, a 640 × 512 radiometric thermal camera at 60 Hz, and an integrated laser rangefinder. All three work together in one gimbal.
How far does the laser rangefinder reach?
It measures 0 to 2400 m at 1 Hz, or 0 to 1200 m at 10 Hz, with accuracy of 0.1 to 0.5 m. Real-world range depends on target reflectivity and atmospheric conditions.
Is the thermal camera radiometric?
Yes. The 640 × 512 thermal camera is radiometric with a thermal sensitivity of ≤ 50 mK and 1× to 8× zoom, so it captures temperature data, not just a thermal picture.
Can it track a moving target?
Yes. The VIO F1 has EO/IR object tracking that auto-tracks and auto-centers a selected object, keeping it framed while you zoom or move the gimbal.
How much does it weigh, and will it fit my payload budget?
Approximately 854 g (1.88 lbs). On the Alta X Gen2, the Smart Dovetail supports payloads up to 1.5 kg, so the VIO F1 is well within that limit. Account for the added weight in your flight-time planning.
What is the difference between the VIO F1 and VIO G1?
The VIO series comes in two versions, F1 and G1. This listing is the F1. If you require the G1 or a specific configuration, confirm the version before ordering.
