ZWO ASI432 OSC Planetary Camera Instruction Manual

June 4, 2024
ZWO

ZWO ASI432 OSC Planetary Camera Instruction Manual

All materials related to this publication are subject to change without notice and its copyright totally belongs to Suzhou ZWO CO.,LTD.
Please download the latest version from our Official websit

Instruction

Congratulations and thank you for buying one of our ASI Cameras! This manual will give you a brief introduction to your ASI camera. Please take the time to read it thoroughly and if you have any other questions, please feel free to submit it on the ZWO support site:
https://support.astronomy-imaging-camera.com/

The ASI432MM is one of the latest color planetary cameras released by ZWO in 2022. Packed with Sony sensor IMX432, this camera has some very great highlights, including a large sensor format of 1.1”, a large pixel size of 9.0um, and super-fast frame rate up to 120fps.

Model Mono/Color Sensor
ASI432MM Color SONY IMX432

For software installation instructions and other technical information, please refer to our official website https://astronomy-imaging-camera.com/

What’s in the box?

ASI432MM
What’s in the box

Camera technical specifications

Sensor SONY IMX432LLJ-C
Format 1.1”
Diagonal 17.6mm
Resolution 1.77 Mega Pixel, 1608*1104
Pixel size 9µm
Sensor size 14.472mm * 9.936mm
Max fps 120
Shutter Global shutter
Exposure range 32µs-2000s
Readout noise 2.4 ~ 20.8e (4.3e@14db gain)
QE peak 79%
Full well 97ke
ADC 12bit
USB interface USB 3.0
Adapters 2”/M42X0.75
Protect window AR D25*1mm
Dimension 62mm
Weight 126g
Back focus length 6.5mm/17.5mm
Supported OS Windows, Linux & Mac OSX

QE graph & Read noise

QE and Read noise are the most important parts to measure the performance of a camera.
Higher QE and Lower read noise are needed to improve the SNR of an image.

The following figure shows the QE curve of ASI432. According to our measurement, the QE peak of ASI432 is 79%.
QE graph & Read noise

Compared to traditional CCD cameras, the readout noise of ASI432 is extremely low. The built-in HCG mode can effectively reduce readout noise at high gain and allow the camera to maintain the same high dynamic range as it does at low gain. When the gain is 140, the HCG mode is automatically turned on and the dynamic range rises back to 12bit. When the gain is 400, the readout noise is 2.4e.
QE graph & Read noise

Amp glow

The IMX432 sensor has amp glow with itself but ZWO’s anti-amp glow function has greatly reduced it and maximized the camera’s photographic performance.
Please notice that ASI432MM still has amp glow. However, they can be easily calibrated with dark frames.

Getting to know your camera

External View
External View 

  1. USB 3.0 & USB 2.0 Input
  2. ST4 Guide port
  3. AR Protective window D21*1mm
  4. 1/4” screw: allowing you mount the camera to tripod.

Structural dimension diagram

Structural dimension diagram

Power consumption

ASI432 camera is built with low power consumption, max at 2.96W with USB power supply.

Protect window

There is a protective window AR filter in front of the ASI432 camera sensor, with 21mm diameter and 1mm thickness.
Protect window

Analog to Digital Converter (ADC)

The ASI432 camera records in 12bit ADC and 10bit ADC. You can image at a faster fps rate if you use 10bit ADC (high speed mode). You can also set an ROI if you want even faster fps rate.
Below are the maximum speeds of ASI432 running at different ADC modes.

Resolution USB3.0 USB2.0
12BIT ADC 12BIT ADC
RAW16 RAW8 RAW16
*16081104** 108.7 120
1280*720 178 178
640*480 256 256
320*240 454.7 454.7

Binning

ASI432 camera supports software bin2, bin3 and bin4 mode and hardware bin2, bin3 and bin4 mode.
The biggest benefit is a faster frame rate. If you don’t care about speed, we suggest you use software binning.

How to use your camera

There are many adapters available for this camera for connecting to your scope or lens. Some are  included with the camera and others you can order from our site: https://astronomy-imaging-camera.com
How to use your camera

  1. 1.25” Nosepiece
  2. 1.25” filter (optional)

How to use your camera

Notice for use

Below are the requirements for camera storage and working temperature. Please don’t use your camera when the environment does not meet these requirements, otherwise the camera might get damaged.

Working temperature -5°C ~50°C
Working humidity 20% ~ 80%
Storage temperature -20°C ~ 60°C
Storage humidity 20% ~ 95%

Do not use corrosive solutions to clean the camera, so as not to corrode the surface oxide layer and not to damage the camera; Meanwhile, do not expose the camera to the sun for a long time, so as not to discolor the appearance of the oxide layer.

Cleaning

The camera is sealed and comes with an AR protect window to protect the sensor from dusts and humidity.
To see the dusts, you just need to set up your telescope and point it to a bright place. A Barlow is required to see these dusts clearly. Then attach the camera and adjust the exposure to make sure not overly exposed. You can see an image like below if it’s dirty.
Cleaning

The big dim spot on the image (right side) are the shadows of dust on the protect window.
The very small but very dark spot on the image (at left) are the shadows of the dusts on the sensor.
If above situation occurs, it is recommended that the dust on the sensor surface be blew off with air pump. If it cannot be blown off, it is recommended to use cotton swabs and 99% anhydrous ethanol to gently wipe the sensor.
We have very detailed instruction on our website:
https://astronomy- imagingcamera.com/manuals/How_to_clean_ASI_camera_and_redry_the_desiccant.pdf

Warranty

  1. ZWO will provide a 2-year free warranty service (Warranty Period) for ZWO products purchased by Users from ZWO (“Products”) in accordance with this Policy, commencing on the day following receipt of the Products by Users. For ASIAIR Plus users, commencing on the day of device activation.

  2. If a User encounters the following Dead on Arrival (DOA) and contacts ZWO within the corresponding time limit to issue the Product purchase invoice and relevant evidence, ZWO will provide door-to-door pick-up service and, as appropriate, after-sale replacement (or partial replacement), repair or return (or partial return) service for the following Products:

  3. Product quality problem
    Provided that a User detects a quality problem and contacts ZWO within 30 days after receipt of the Products, and ZWO support team confirms that the Products indeed have a quality problem or defect after their inspection, ZWO will provide free replacement service towards such Products;

  4. Product transportation problem
    Provided that a User finds obvious signs of bubbling, serious overstocking, or deformation on the outer package of the Products upon receipt of the Products, and provides ZWO with pictures of the outer package and proof of receipt within 3 days after receipt of such Products, ZWO support team will verify the actual shipper and determine the responsible party for such transportation problem. In the event that ZWO is the actual shipper, ZWO will be responsible for providing the relevant return or replacement service, however, if the Products are directly sold or transported to the User by an agent of ZWO, the agent will be responsible for providing the relevant return or replacement service.

  5. If the Products are under the following circumstances, they are not within the scope of warranty service, ZWO may provide maintenance services to the Users:

  6. The Warranty Period of the Products has expired; or

  7. The Products are injected into liquid or affected by moisture or corrosion; or

  8. The Products are damaged by an external force (such as the broken of the camera protection window glass, the deformation of the product shell, the broken of the USB port, etc.); or

  9. Disassembling, repairing by a third party, refurbishment of the Products (such as downloading erroneous firmware) without the written authorization of ZWO; or

  10. The product system is modified, or the maintenance notice is lost or changed; or

  11. Product quality problem caused by installation not following the requirements or instructions for the Products; or

  12. Physical damage or failure of the Products caused by the force majeure (such as strong vibration or extrusion such as flood, fire, earthquake, or thunder stroke); or

  13. Damage caused by the improper User operation during the period of shooting or use, such as using without the equipment protection or direct shooting of the sun; or

  14. No valid purchase invoice or warranty certificate; or

  15. The Products are second-hand products.

Any quality problem with the accessories or other parts of the Products is not a condition for the return or change of the Products, and the User may solely request to replace the accessories with new ones, which shall be handled after verification by ZWO support team.
If the issue with your ZWO product was caused by certain damage (such as severe damage not covered by the 2-year warranty), you might have to pay the replacement value.

Servicing

For software upgrades, please refer to “Support-manual and software” on our official website.
https://astronomy-imaging-camera.com/
For repairs and consultation, you can visit here: https://support.astronomy- imaging-camera.com/

Note:

  1. For the normal repair or replacement of the Products during the Warranty Period, the User will bear the return cost. When returning the Products, Users shall specify the actual reasons for the damage to the Products, and shall provide the corresponding valid certificates, such as pictures or videos, etc.
    For the Products that need to be replaced after being confirmed by ZWO in writing, the User shall return the Products with the complete package, together with all accessories, manuals, etc., to the address designated by ZWO.
    By sending back the product to ZWO, the User agrees to pay out-of warranty fees that may arise during the repair process of the product. ZWO will send back the product after charging.

  2. For the Products that need to be returned for after-sales service, ZWO will provide the corresponding RMA code for reference.
    ZWO will not accept any products having no RMA code that have been returned privately without ZWO written confirmation.

  3. If a User purchases the ZWO Products from a ZWO agent, the User may contact the ZWO agent directly for the relevant after-sales service.

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References

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