ZWO ASI533MM PRO - Powerful latest generation mono camera

The Chinese company ZWO (Zhen Wang Optical) offers a range of cameras intended for astronomy whose qualities, performance and price are surprising. The ASI533mm model is equipped with a monochrome sensor in 1 "format of 9 million pixels (3008 x 3008px) whose use predestine mainly to the imagery of the deep sky. A cooling under the ambient temperature of 35 ° C is Obtained thanks to the action of a peltier module and a silent fan to significantly reduce thermal noise.

At the sensitivity level, the ASI533 is distinguished with a high performance CMOS sensor Sony IMX533 capable of reaching a peak of sensitivity of 91%! Thanks to Exmor R back-illuminated technology. The peak is close to 60% on the line of alpha hydrogen (at 656nm, the emission zone of numerous nebulae). Also note a low reading noise and the absence of a pre-amplifier effect. In "pro" version, this camera has a buffer memory (buffer) of 256MB considerably increasing the speed of reading of the sensor.

In a planetary, it makes it possible to obtain a resolution of 3008 x 3008px at the speed of 20 images/second, with a depth of 14bits. The acquisition speed reaches 216 images/second in resolution 320 x 240px at 14bits. The ASI1533mm-Pro has a female M42 type input thread. Several cables and adapters are delivered for multiple combinations (see the "Documentation" tab).

Camera application areas:

• Images of the deep sky (nebulae and galaxies): Due to high sensitivity, nebulae and galaxies are colorful after only a few seconds. The camera can be cooled up to 35 ° C below the outside temperature. By increasing the gain (comparable to the ISO setting for digital reflex cameras), you can reduce exposure times to less than 30 seconds.
• Lunar and planetary images: thanks to its possibility of short exposure time this camera can be used in video mode.

Backlight technology

Sony's retro-bundled CMOS image sensor improves sensitivity and noise reduction. It has retained the advantages of CMOS sensors such as low energy consumption and high -speed operation.

The backlight improves the absorption of light and increases the amount of light at the same time. This allows considerably shorter exposure times and leads to an improved quantum efficiency of 80%.

Sony recently developed a unique photodiodes structure and an integrated objective optimized for backlit structures, which make it possible to obtain higher sensitivity and lower random noise by reducing noise, darkness and defective pixels Compared to conventional lighting.

No AmpGLOW

Traditional CMOS sensors produce a low infrared light source during operation, which is often seen in the corner of non-calibrated images as the revealing sign of a "light amp-glow". Since the ASI533MC PRO uses zero glow circuits, you will not have to worry about the amp glow even when you use long exposure to high gain.

A modular camera

Zwo provides you with a set of rings allowing you to reach a 55 mm backfocus easily. This backfocus is often used in astronomy with a wide panel of correctors and is a distance to respect if you want round stars. Of course this distance is to be checked according to the correctors because it is not always 55mm.

Features

•     Type: monochrome cmos
•     Sensor: CMOS Sony IMX533
•     Format: 1 "
•     Resolution: 3008 x 3008px (9 million pixels)
•     Pixel size: 3.76µ
•     Surface: 127.91mm² (11.31mm x 11.31mm)
•     Reduction of electroluminescence ("amp-glow"): yes
•     Full Well capacity: 50,000 e-
•     Pic of sensitivity (Qe Peak): 91%
•     Dynamic range: 14 bits
•     Lay time: 32µs at 1000s
•     Image cadence: 14 bits: 3008x3008@20img/s, 1920 × 1080@54img/s 1280x720@80img/s
•     640x480@117img/s, 320x240@216img/s
•     Reading noise: 1 to 3.8E-
•     Transfer / Connectors: 1x USB port 3.0 / 2x USB2.0 ports
•     Tampon memory: Buffer DDR3 256MB
•     Cooling: regulated thermoelectric with setpoint. Δt = -35 ° C max
•     Objective assembly: 2 "male with female thread t2 M42x0.75
•     Back Focus (Distance sensor/Camera input): 6.5mm or 17.5mm with the T2 adapter
•     Temp. Maxi (function): -5 ° C at 45 ° C
•     Temp. Maxi (storage): -20 ° C at 60 ° C
•     Maximum humidity (function): 20% to 80%
•     Maximum humidity (storage): 20% to 95%
•     Dimensions (Dia. X H): 78mm x 73.5mm
•     Weight: 470g
•     Power supply (optional): 12V to 3A max