Manufacturer: ASI - ZWO
Product number: ASI461MMPRO

EUR 17.999,00


incl. 19 % VAT (DE)  
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excl. 6.95 € shipping costs (DE)  
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ZWO ASI461MM Pro -professional CMOS monochrome medium format camera, cooled
The ZWO ASI461MM Pro is a 100 megapixel camera for astrophotographers who expect top class results. The sensor has a similar dynamic range as a CCD sensor, with unequally higher sensitivity. The camera can be used on all well-corrected telescopes and is a true lightweight for its size at only 910 grams.

The sensor has a 16-bit ADC with 65536 stages, back-illumination technology, and high quantum efficiency, providing great performance for deep-sky imaging, milky way imaging, and research.

Low readout noise, no amplifier glow and no visible fixed-pattern noise further enhance the images.

Medium format with 100 megapixels
The 100-megapixel Sony IMX461 sensor already offers medium format with 44x33 mm image size (approx. 55 mm diagonal) and a high resolution of 11656x8750 pixels. The 3.76-µm pixels have a full-well capacity of 50.3 ke. In 2x2 binning mode, you get an even larger full-well capacity of 198 ke and a larger pixel size of 7.5 µm * 7.5 µm.

Back illumination technology
Sony?s back-illuminated CMOS image sensor improves sensitivity and noise reduction ? the key factors to enhancing image quality, while radically realigning their fundamental pixel structure from front-illumination to back-illumination. It has retained the advantages of CMOS image sensors such as low power consumption and high-speed operation.

The backside exposure improves the light absorption and increases the amount of light at the same time. This allows significantly shorter exposure times and leads to an improved quantum efficiency of up to 91% - maximum of astromomical CMOS cameras.

Sony has newly developed a unique photo-diode structure and on-chip lens optimized for back-illuminated structures, that achieves a higher sensitivity and a lower random noise without light by reducing noise, dark current and defect pixels compared to the conventional front-illuminated structure.

Zero amp glow
Traditional CMOS sensors produce a weak infrared light source during operation quite often seen in the corner of uncalibrated images as the tell tale signs of ?amp glow?. As the ASI461MM Pro uses zero amp glow circuitry, you won?t have to worry about amp glow even when using high gain, long exposure imaging.

Anti-dew heater integrated
The ASI461MM Pro comes with the polyimide heater that can avoid any dew problems.
The anti-dew heater, which fits completely onto the protective window, heats it up slightly to prevent condensation problems.
The power of the anti-dew heater is approx. 5 W. It can be turned off in the software to save power.

Important: external power supply required!
This camera requires 1 amp even in uncooled operation, which is a problem for USB sockets on computers, because they are only rated for 900 mA (0.9 A).
Stable operation of the camera is therefore only possible with an external 12 V power supply.

Optimal support by Teleskop-Service before and after purchase:
We work with the cameras ourselves and can offer you optimal advice. Which camera matches your telescope, how do you achieve optimal adaptation? Teleskop-Service is one of the biggest ZWO dealers. Due to our contacts, we offer best possible service also after purchase.

Practical tip from TS: Storage of cameras and accessories
Especially in our latitudes, the nights are often very humid. This humidity condenses on your camera, eyepiece or filter when they come into the warm interior of the apartment. Especially cooled cameras are affected by this. Quickly a photo session is over because the sensor ices up.

Good storage is an important prevention against dew and also extends the life span.
After use, put the camera immediately into the TS Protect Case and add some silica gel. During storage, the silica gel will suck the moisture out of the camera. At the same time, the penetration of humid room air is prevented. Dry storage even allows the small dry tablets in cooled cameras to partially regenerate. Your camera or accessories are always ready for you in optimal condition. You can find the silica gel and the case in our product recommendations.

Downloads, drivers:
ZWO provides software and drivers online for free download.

Software and drivers for all ZWO cameras

Frequently asked questions about ZWO cameras:
The FAQ area is constantly updated by ZWO, here you will find answers to many questions.

FAQ about ZWO cameras

ZWO Users Forum

Manuals for ZWO products:
The manuals page is constantly updated by ZWO, here you can find user guides for ZWO products.

Link to the manuals (the one for this camera will appear)

How to clean my ZWO camera:
The manufacturer provides a manual that covers how to clean an ASI camera and regenerate the desiccant tablets: Please click here.
Sensor:3.4" CMOS Sony IMX461ALR-C Mono
Sensor size:44 mm x 33 mm - diagonal 54.8 mm
Pixel layout:11656*8750 pixels - 101.99 MPixel
Pixel size:3.76 µm
ADC:16 bit
Cooling:Powerful Peltier cooling system
Exposure time:32 ?s to 2000 s
Full well:50.3 ke
Readout noise:1.0 e to 3.25 e
Sensitivity:Peak 91% QE
Zero amp glow design:Yes
Download time:approx. 0.265 s with USB 3.0
Power consumption:12 V, 3 A
Telescope connection:M68x1 female thread
Working distance from internal thread to sensor:22.5 mm (17.5 mm without threaded connection plate)
Diameter:106 mm
Weight:0.91 kg
Camera
Bag
USB 3.0 cable (2 meters)
2x USB 2.0 cable (0.5 meter)
ASI Quick Guide

How can I put a filter in the light path?
The sensor has a diagonal of almost 55 mm, so filter drawers or filter wheels for round filters of 50 mm diameter are not sufficient.

ZWO has announced a filter wheel specifically for the ASI461MM Pro, but there is another way: The Baader UFC system offers an insert for unmounted filters of the dimension 50 mm x 50 mm and an adapter with external thread M61x1. This is telescope side, but fits into the camera. With a camera adapter with internal thread M68x1 for the telescope side you can assemble a filter adapter with M68 threads, which can be inserted into a working light path.

Question:
Will my Pro camera work without extra power supply if I don´t turn on the cooling?

Answer from Teleskop-Service:
No, the current Pro cameras always require extra power supply, even without cooling.


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