Ares-C Pro USB3.0 color Camera (IMX533)

Product Overview

The Player One Astronomy Ares-C Pro is a cooled one-shot-color USB3.0 camera built on the 9-megapixel Sony IMX533 CMOS sensor. The IMX533 is a 1″ square sensor (16 mm diagonal, 3008 × 3008 pixels) with 3.76 µm pixels, a 73 ke- full-well capacity, and a 14-bit ADC. Its square format frames a target the same way in any rotation, so you never crop to fit a rectangle. A two-stage TEC cools the sensor 35°C–40°C below ambient, dropping dark current for the long sub-exposures deep-sky imaging needs.

Who It's For

This is a good match if you image deep-sky objects — nebulae, galaxies, and star clusters — and want a single-shot color camera that avoids filter changes and channel combination. The square sensor suits round and compact targets, and the cooling makes it capable on faint, long-exposure subjects from darker or suburban skies.

Key Features & Design

• Sony IMX533 color sensor: 3008 × 3008 square array with 3.76 µm pixels for balanced resolution and sensitivity.
• 73 ke- full-well, 14-bit ADC: wide dynamic range and smooth tonal gradation in stacked data.
• Read noise down to 1.0e-: low-noise floor helps pull faint signal out of the background.
• Two-stage TEC, 35°C–40°C below ambient: controls dark current and thermal noise on long exposures.
• 512 MB DDR3 buffer: steadies the USB3.0 stream during download.
• Peak QE about 80%: efficient light collection for a color sensor.

Optical / Mechanical Design

The IMX533 pairs a 16 mm square imaging area with 3.76 µm pixels, giving a moderate image scale that works across a broad range of focal lengths. Peak quantum efficiency is about 80%, and the 73 ke- full well combined with 14-bit sampling gives the dynamic range to hold bright cores while stacking faint outer detail. A D32 × 2 mm AR Plus multi-layer coated window protects the sensor.

Recommended Uses

• Deep-sky astrophotography: nebulae, galaxies, and clusters in one-shot color.
• Suburban and dark-sky imaging: cooling supports long sub-exposures with lower thermal noise.
• Compact and round targets: the square frame uses the full sensor without wasted crop.

Compatibility & Accessory Notes

The Ares-C Pro connects over USB3.0/USB2.0 (Type-C) and powers its cooler from a 12 V DC 5.5 × 2.1 mm input. It uses a 1.25″ fit and M42 × 0.75 threads, with the sensor set 17.5 mm behind the front face. Use that 17.5 mm back focus as your reference when adding filters or a flattener/reducer to reach the required spacing.

Good to Know Before You Order

• It is a dedicated imaging camera: it works through a computer and has no application in a visual eyepiece train.
• Cooling draws 12 V power: plan a 12 V DC supply for the TEC alongside the USB data cable.
• Spacing to the sensor: the 17.5 mm back focus is the figure to build your train from — send us your filter and flattener setup and we will confirm the numbers.

Frequently Asked Questions

Is it difficult to set up?

No. It threads onto a 1.25″ or M42 interface, connects with one USB3.0 Type-C cable, and takes 12 V DC for cooling. Your capture software controls exposure, gain, and cooler set-point.

What is it best used for?

Cooled one-shot-color deep-sky astrophotography — nebulae, galaxies, and clusters without filter wheels or channel combination.

Why a square sensor?

The 1″ square format frames a target identically at any camera rotation and uses the full sensor on round objects, so there is no wasted area to crop away.

Do I need filters?

As a color camera it captures full color in one exposure; a light-pollution or dual-band filter can still help from brighter skies.

Bottom Line

In short: a cooled one-shot-color camera on the square 9 MP Sony IMX533, with 3.76 µm pixels, a 73 ke- full well, 14-bit output, and 35°C–40°C of cooling below ambient. Give it 12 V power and a USB3.0 link and it is a capable deep-sky imager set 17.5 mm behind its front face.