Product Description
ASI1600MM Pro


The ASI1600MM Pro is one of the most popular cameras from ZWO. It has gained a reputation as a fantastic camera if you want to get serious about your astrophotography. Some of the highlights include:
- 4/3” format with 3.8 um pixel size– flexible pixel size for many types of telescopes.
- 12-bit ADC – giving high dynamic range of 12.5 stops.
- A solid 20ke- full well capacity– helping to reduce the issue of, for example, saturated stars.
- 16-megapixel sensor with 4656*3520 pixels– plenty of detail can be captured in high resolution.
- Read noise as low as 1.2 e-.
DDR Memory Buffer
DDR memory buffer is the main difference between ASI “Cool” and “Pro” cameras.
ASI1600MM Pro camera includes a 256MB DDR3 memory buffer to help improve data transfer reliability. Additionally, the use of a memory buffer minimizes amp-glow, which is caused by the slow transfer speeds when the camera is used with a USB 2.0 port.

Astrophotography Performance
ASI1600 Pro offers very good performance for astrophotography. Low read noise, low dark current, high dynamic range.
ASI1600 has a build-in 12bit ADC but can provide 12.5 stops dynamic range which is even better than KAF8300 due to its super low read noise.
QE Graph
We suppose the QE peak value is more than 60%.

Dark Current
The dark current of ASI1600 from out test result.
here is a 300S dark frame tested with the cooler running at -25 degree.

Notice: For the possible amp glow that shows on your images, please refer to this tutorial: “What is Amp-glow and how do I manage it? “
https://astronomy-imaging-camera.com/faq
Reliable Mechanical Structures
There are four screws that seal the sensor chamber. Our camera design has been extensively tested and is very stable.
Even when used in higher humidity environments, ASI1600 Pro will still work fine without dew problems.

USB 3.0 Port & USB2.0 HUB
USB 3.0 Port: Provides 5Gb bandwidth to make it possible for ASI1600 Pro to run at 14.7 fps (12bit, normal mode) or 23 fps (10bit, high speed mode) at full resolution (16Mega).
USB 2.0 HUB: Can connect with various accessories, including a filter wheel, guide camera or electronic focuser, allowing you to manage your cables better. There are two short 0.5m USB2.0 cables included with the ASI1600 Pro. The hub is powered by the external power supply if you connect one.

Cooling System
Thanks to the two-stage TEC cooling, ASI1600MM Pro can lower the CMOS sensor temperature to more than 40-45 degrees Celsius below ambient temperature, which can greatly reduce dark current generation and sensor noise even during extended exposure times.
*The Delta T 40-45℃ is tested at 30℃ ambient temperature. It might get down when the cooling system is working for a long time. Also, as the ambient temperature falls, the Delta T would also decrease.
Please notice that the camera needs to be connected to an external 11-15v power supply to implement the cooling function. We recommend you use 12V@3A DC adapter (5.5*2.1mm, center pole positive) or lithium battery with 11-15V to power the camera. If you don’t have one, please click here to buy a 12V power adapter. There are 4 different standards for different countries, please make sure you selected the correct adapter when placing the order.
Connecting Diagram

1. M43-T2 adapter
2. EOS-T2 adapter
3. 2”Filter (optional)
4. 1.25” T-Mount
5. 1.25” Filter (optional)
6. M42-1.25” Filter (optional)
7. T2 extender 11mm
8. M42-M48 extender 16.5mm
9. T2-T2 adapter
10. EFW mini
11. EOS adapter for EFW+1600
Mechanical Diagram

What is in the box?
ASI1600 Pro box includes all necessary cables, adapters, and manuals.

Spacer thickness: 0.1mm *1+0.2mm *2+0.5mm *1
The best solution of 55mm back focus length

Read more: https://astronomy-imaging-camera.com/tutorials/best-back-focus-length-solutions-55mm.html
Please notice that the camera needs to be connected to an external DC 12V @3A~5A power supply adapter for use (connector 5.5*2.1mm, center pole positive). If you don’t have one, click here to buy a 12V power adapter. There are 4 different standards for different countries, make sure you selected the correct adapter when placing the order.
Or you can also use lithium battery with 11-15V to power the camera.
Just be aware that power supplies out of this range might cause irreversible damages to your camera.
Appreciation of user works:
The Cocoon nebula (IC 5146, Sh2-125)
APOD Image of the day, photo by Marcel Drechsler

Camera technical details
Sensor: 4/3″ CMOS
Diagonal: 22.2mm
Resolution: 16Mega Pixels 4656×3520
Pixel Size: 3.8µm
Max FPS at full resolution :23FPS
Shutter: Rolling shutter
Exposure Range: 32µs-2000s
Read Noise: 1.2-3.6e
QE peak: 60%
Full well: 20ke
ADC:12bit
DDRIII Buffer: 256MB
Non-volatile memory/On camera storage: Build-in total 192K byte user-accessible space(image size up to 480X320)
Interface: USB3.0/USB2.0
Adaptor: 2″ / 1.25″ / M42X0.75
Protect window:AR window(D32-2-AR)
Dimensions: 78mm Diameter
Weight: 410g
Back Focus Distance: 6.5mm
Cooling: Regulated Two Stage TEC
Delta T: 40-45 below ambient
Cooler Power consumption: 12V at 2A Max
Working Temperature: -5°C—45°C
Storage Temperature: -20°C—60°C
Working Relative Humidity: 20%—80%
Storage Relative Humidity: 20%—95%
Supported resolution
12Bit ADC
4656×3520 14.7fps
3840×2160 23.1fps
1920×1680 32.9fps
1280×960 47.1fps
640×480 80.4fps
320×240 124.4fps
10Bit ADC
4656×3520 23fps
3840×2160 36.2fps
1920×1680 57.7fps
1280×960 73.6fps
640×480 125.7fps
320×240 192.4fps
more resolutions are user defined
Our website is always updated with the most recent camera drivers as well as software for DSO and planetary imaging. Please make sure the most recent driver and software has been installed before you start shooting:
It is also recommended to read the Manuals first before shooting.
Shipping
Fast Shipping: we will choose DHL, UPS, FedEx etc to deliver it. Usually you will get your package within 15-20 days.
- Fast Shipping(amount ≧ 199USD) for free
- Fast Shipping(amount < 199USD) : $30.00 (We do not provide free shipping from now on.)
Introduction
- It will take around 60-90 days for shipment via ePacket/China Post Registered Air Mail/EMS, which can’t be guaranteed due to force majeure. If you can’t get the air mail package after 2months, please let us know ASAP: info@zwoptical.com
- Customers from Brazil and Chile should leave a message to provide your CPF or CNPJ as your custom needs it.
- Customers from Russia need to provide the complete English name with three words as well as the English shipping address.
Tracking site
DGM: http://webtrack.dhlglobalmail.com/?locale=en-US
China air mail: http://www.17track.net/en
Tax
- The price list on our website is USD without tax.
- Please note that buyers are liable to pay tax involved, such as Import tax, VAT , customs handling fee, etc. The additional fees may be collected at time of delivery by courier.
- For best local service we advise customers buy our cameras form local dealers.
Warranty and Return Policy
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:
1) 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;
2) 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.
3. 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:
1) The Warranty Period of the Products has expired; or
2) The Products are injected into liquid or affected by moisture or corrosion; or
3) 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
4) Disassembling, repairing by a third party, refurbishment of the Products (such as downloading erroneous firmware) without the written authorization of ZWO; or
5) The product system is modified, or the maintenance notice is lost or changed; or
6) Product quality problem caused by installation not following the requirements or instructions for the Products; or
7) 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
8)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
9) No valid purchase invoice or warranty certificate; or
10) 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.
4. 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.
5. If a User encounters any problem during the use of ZWO Products, you may at any time contact ZWO for technical support via ZWO Support.
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.
6. 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.
Sas – :
Hello, what is the supply voltage range “from-to”? Thanx in advance!
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Katherine Tsai – :
Using a battery with 9-15V is also suitable for the cooler power supply.
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Oleksii – :
Will Asi1600mm fit to Zenithstar 73 or better Asi183mm? I want use in city on balcony. thank you!
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Katherine Tsai – :
183
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Alberto – :
I plan to use this camera with a Celestron 8″HD and focal reducer 6,3, what do you advise to use 2″ or 1,25″ narrowband filters
thanks
thanks
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Katherine Tsai – :
We have 1.25″,31mm,36mm,2″ filters.
So far 1.25″ filter can satisfy your setting.
In the future, 2″ filter can support shorter focal ratio.
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Nicolás Abel Carbone – :
Can it be controlled via an Raspberry Pi Board or a Linux-based PC? Through python and/or C++
I need to control the shutter and retrive the raw image via USB
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Katherine Tsai – :
Yes it supports Linux-based PC, python and C++.
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John – :
Can I unplug the cooling power during an imaging session to switch to the next battery without interrupting the exposure currently in progress?
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Katherine Tsai – :
If the fan was running when you unplug the power cable, the fan will stop running.
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Nick – :
I just received ASI1600 Pro from OPT. Does the camera no longer come with desiccant tablets. Are they required? Thank you.
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Sean Wang – :
desiccant bag is cancelled, it is no longer required.
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Noah Schwartz – :
Hi,
Is the ASI1600MM-Cool camera supported on both 32-bit & 34-bit Windows machines?
Thanks.
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Sean Wang – :
Yes, it does.
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Bill Emrich – :
Can you recommend a focal reducer that will work well with the ASI1600MM?
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Sean Wang – :
Depand on the telescope, we recommend to use original reducer from telescope manufactory
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Abhijit Juvekar – :
Hi, I recently purchased ZWO 1600MM-PRO
I noticed there is vertical banding in images upon stretching & stacking.
Can you tell any solution for it?
I seen in some forum that similar issue been reported by other users.
I use Sharpcap for image capturing. See this image containing vertical banding. https://bit.ly/2AaQZ0m
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Sam Wen – :
Did you take flat frame for calibration?
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Mark – :
I have the ASI1600mm-cool and using it with an Explore Scientific 127 refractor. I have recently purchased an Explore Scientific field flattener. The data on the field flattener is that it requires 45mm of backfocus from the flattener to the focal plane. That’s a little less than many which state 55mm. Does that 45mm create issues with using it with the 1600mm?
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Sean Wang – :
No, won’t be a problem. But need to make a customized extender to reach 45mm back focus.
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Bandi – :
Hi Sam and Sean,
Thank you for your previous answer. Is there any chance improve the sensor used in ASI1600 with AR coating on the microlenses? Or the is a technological reason why it is missing?
Regards
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Sean Wang – :
Hi Bandi
We sent emails to Panasonic about this, but no response. You know astronomy market is small, we are willing to do something, but it’s hard to push supplier to excute.
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Stephane Rose – :
Hello Sam.
I’ve got and purchased a ZWO 1600 Pro Mono cooled camera with 31mm filter wheel from your company. So far I love it.
One question… why is it in that I cannot use offset values in SG Pro. I have the latest drivers. People usually talk about gain and offset when imaging in narrowband is there a reason I cannot work with offset values….? Is it because the ZWO 1600 Pro mono assists the offset values automatically when selecting a gain value… ? Thanks…. In addition what should gain values should I use with O3 and Ha and Sii . Thank you very much in taking your time to answer me.
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Sam Wen – :
you don’t need to care about offset value if you use our ASCOM driver
you can adjust offset value with the native support of SGP
the gain can be the same with all filters
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Bandi – :
Hi Sam,
There are some user reviews on internet about the diffraction pattern around the brightest stars by using this sensor. As I know the conclusion was the missing AR coating above the microlenses. Is this issue already solved in this PRO version of this camera?
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Sean Wang – :
Hi Bandi
This one still without AR coating on sensor.
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Matevz Bokalic – :
Hi there,
Do you have the QE chart down to 1100nm?
Best regards
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Sean Wang – :
Hi Matevz. We don’t have it.
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John Schnupp – :
Does the ASI1600MM-C Pro version have the same microlens effect on bright stars? My reading/research on the microlens effect is that it is due to the lack of anti-reflecitve coatings on the actual sensor and that Panasonic did not seem interested in fixing the problem. I currently own an ASI1600MM-C. I would consider upgrade to Pro if the microlens problem has been fixed. The ASI1600MM-C is a great camera if there are no bright stars (about mag 4 and brighter) in the field.
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Sean Wang – :
Hi John
1600pro still no anti-reflective coatings, same sensor with 1600mm-c.
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Patrick Arden – :
Hi Sam, what size filters do you recommend using this camera, EFW and a WO f7, 132mm refractor.
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Sean Wang – :
Hi Patrick 1.25″ filters can support >f5 telescope, your telescope is suitable. 31mm and 36mm filters is bigger, can support shorter F-radio.
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Vesselin – :
Hi Sam,
Do I need any additional accessories in order to connect the ASI1600MM pro and the EFWmini to my Tele Vue-85 refractor and the Tele Vue 0.8x reducer/flattener?
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Sean Wang – :
1600mm pro box and EFWmini box have enough adapters for reducer/flattener.
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Ben Stew – :
Hi Sam,
To cool the camera I purchased a USB cord end to run off my PowerTank17. However it only gives 5V @ 1.5amps. When I plug it in and try to cool it seems to work just fine. But will only having 5V damage it?
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Sean Wang – :
9-15v will be ok, but 5v won’t enough for cooling system, and yes, might damage it.
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Dave – :
What does QE peak mean, what is the importance of this?
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Sam Wen – :
QE Peak means the highest point of the QE value
usually you can tell the QE value is very good or not from the QE Peak value
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John – :
Hello,do you deliver to the netherlands too ?
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Sam Wen – :
we have dealer in Netherlands, please order from our dealer
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