Player One Astronomy has unveiled their latest creation in the NEPTUNE 3rd Gen series, the NEPTUNE 664C. Designed as the successor to the Neptune-C II (featuring the IMX464 sensor), the 664C comes loaded with Sony's 1/1.8" IMX664 color sensor. The sensor sports a pixel size of 2.9um, a well depth of 38.5ke, and offers a 4.2MP resolution (2704x1540), with a diagonal measurement of 6.46 mm.

Super AR Plus Window

The 664C incorporates a Super AR Plus window in front of its sensor. This special window offers incredible light transmittance ranging from 310nm to 1100nm, enhancing both ultraviolet and NIR performance.

Naming Scheme

Player One has a unique approach to naming their cameras; each is named after a planet, with the sensor size loosely corresponding to the planet's size. For instance, a camera with a 1-inch sensor will be called Saturn, while one with a ½.8 inch sensor goes by Mars.

STARVIS 2 Technology

The 664C utilizes Sony's latest STARVIS 2 tech—a back-illuminated pixel technology in its CMOS sensor.

Non-Amp-Glow

One of the camera's standout features is its completely "dark" dark frame. No matter how much you tweak the curve, there's zero amp glow.

Cutting-Edge Design

In terms of aesthetics, the 664C combines a hexagonal main body with rounded chamfers, finished in contrasting colors of vibrant red and subdued black. The overall matte finish adds a luxurious touch.

2nd Gen Sensor Tilt Plate

The camera includes a high-density sponge shading pad, effectively eliminating light leakage from the sides.

256M DDR3 Cache

The 664C is a pioneer, being among the first planetary cameras to feature DDR3 cache. This stabilizes data transmission, reduces read noise, and performs excellently even when connected to a USB 2.0 port.

DPS Technology

Dead Pixel Suppression (DPS) technology identifies and corrects abnormal pixels by analyzing dark frames and adjusting them according to neighboring pixels.

Passive Cooling System

A new feature in this model helps dissipate heat away from the sensor.

Safety Measures

The camera is equipped with overvoltage and overcurrent protection mechanisms to keep your gear safe.

Data Port Capabilities

In RAW8 mode (10bit ADC), it can hit 93 FPS when connected via USB3.0, while RAW16 mode (12bit ADC) offers 46.5 FPS. However, actual recording speeds may vary depending on your hard disk.

Readout Noise

All noise values are verified, and you can test it yourself using Sharpcap 4's Sensor Analysis feature. The readout noise can drop as low as 0.75e at a gain of 350 and approximately 0.67e at a gain of 450.

HCG Mode

The High Conversion Gain (HCG) mode kicks in automatically when the camera's gain setting is ≥180, reducing readout noise while maintaining high dynamic range.

QE Curve

Lastly, this camera is optimized for Near Infrared (NIR), boasting a high QE that can be attributed to both the Sony sensor and the Super AR Plus window.

With features like these, the NEPTUNE 664C establishes itself as a robust, high-performing planetary camera for all your astrophotography needs.

Specifications

Camera Specifications

• Sensor	SONY IMX664 1/1.8" CMOS (color)
  Diagonal	9mm
  Total Pixels	4.2 Mega Pixels
  Max Resolution	2704×1540
  Pixel Size	2.9μm
  Chip Size	7.8mm×4.5mm
  Frame Rate	136FPS（10bit）
  Bayer Matrix	RGGB
  Shutter	Rolling shutter
  Exposure Range	32μs-2000s
  Readout Noise	6.1e~0.67e
  QE Peak	≈91%
  Full Well	38.5k e
  ADC	12 bit
  Data Port	USB3.0/USB2.0
  Adapter	1.25″ / M42X0.75
  Back Focal Length	12.5mm
  Protective Window	D21*1.1MM High Quality AR Plus (Anti Reflection) Multi-Layer Coating
  Diameter	66mm
  Weight	180g
  Resolution and FPS	Under USB3.0 mode Resolution 12bit ADC 10bit ADC 2704×1540 93FPS 46.5FPS 2560×1440 105FPS 52.5FPS 1920×1080 187FPS 93FPS 1280×720 275FPS 203FPS 800×600 325FPS 240FPS 640×480 398FPS 294FPS More resolution options could be setup in capture softewares!