QHY533C Colour Camera
QHY
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Overview
The QHY533C (colour) is a new generation of back-illuminated CMOS cameras with 3.76um pixels. The QHY533C uses the similar series of sensors as the flagship models QHY600 and QHY268, featuring low noise.
The QHY533C has different interface designs to offer greater flexibility for various applications. the camera comes with an additional adapter for tripod mounting, making it easier to use a DSLR lens for photography.
Features
BSI
One benefit of the back-illuminated CMOS structure is improved full well capacity. This is especially beneficial for sensors with small pixels. In a typical front-illuminated sensor, photons from the target entering the photosensitive layer of the sensor must first pass through the metal wiring embedded just above the photosensitive layer. The wiring structure reflects some of the photons, reducing the efficiency of the sensor.
In a back-illuminated sensor, light enters the photosensitive surface from the reverse side. In this case, the sensor’s embedded wiring structure is located below the photosensitive layer. As a result, more incoming photons strike the photosensitive layer, generating and capturing more electrons in the pixel well. This ratio of photon to electron production is called quantum efficiency. The higher the quantum efficiency, the more efficient the sensor is at converting photons to electrons, and thus the more sensitive the sensor is to capturing images of dim objects.
TRUE RAW Data
In DSLR implementations, there is a RAW image output, but it is typically not completely RAW. Some evidence of noise reduction and hot pixel removal may still be visible upon close inspection. This can negatively affect the image for astronomy, such as causing the “star eater” effect. However, QHY cameras offer TRUE RAW IMAGE OUTPUT, producing an image comprised only of the original signal, thereby maintaining maximum flexibility for post-acquisition astronomical image processing and other scientific imaging applications.
Anti-Dew Technology
Based on nearly 20 years of experience in cooled camera design, the QHY cooled camera has implemented a complete dew control solution. The optical window features a built-in dew heater, and the chamber is protected from internal humidity condensation. An electric heating board for the chamber window helps prevent the formation of dew, while the sensor itself is kept dry with our silicone gel tube socket design, which controls humidity within the sensor chamber.
Cooling
In addition to dual-stage TE cooling, QHYCCD implements proprietary hardware technology to control dark current noise.
Design
QHYCFW3S Adjustment for QHY533M
To make it easier for astrophotographers to use the QHY533M's threaded interface to connect the filter wheel without removing any parts (such as the filter container), QHYCCD has updated the design. Since 2022, the QHYCFW3-SR no longer includes this adapter. This adapter was previously used for connecting the QHY163 or QHY183, but the QHY533M does not require it. Therefore, if you're purchasing a QHY533M, we recommend choosing the QHYCFW3S-SR for the best experience.
Note that this adapter is still included in the CFW3S-SR package, and you can still use the CFW3S-SR with the QHY183 or QHY163.
QHY533M Parallel Position Adjustment
The QHY533M is connected to the QHYCFW3S using threads, so the sensor may not be parallel to the filter wheel when the threads are fully tightened. In this case, you can adjust the front part of the QHY533M to align it at a right angle to the sensor.
Full technical information and sample images can be found at
https://www.qhyccd.com/astronomical-camera-qhy533/

QHY533C Specifications
| Attribute | Details |
|---|---|
| Model | QHY533M |
| CMOS Sensor | SONY IMX533 |
| Mono/Color | Mono |
| FSI/BSI | BSI |
| Pixel Size | 3.76μm x 3.76μm |
| Total Pixel Area | 3008 x 3028 (includes optical black area and overscan area) |
| Effective Pixels | 9 Megapixels |
| Sensor Size | Typical 1 inch |
| A/D | 14-bit A/D |
| Full Well Capacity | 58ke- |
| Frame Rates |
Full Resolution: 26.5FPS@8bit, 20FPS@16bit ROI: 2160Lines: 37FPS@8bit, 28.5FPS@16bit 1080Lines: 71.5FPS@8bit, 55FPS@16bit 768Lines: 97FPS@8bit, 76FPS@16bit 480Lines: 152FPS@8bit, 117FPS@16bit 240Lines: 280FPS@8bit, 215FPS@16bit |
| Readout Noise | 1.3 to 3.4e- |
| Dark Current | 0.0005e-/pixel/sec @-20℃ |
| Exposure Time Range | 30μs - 3600sec |
| Recommended Gain | 68 |
| Amp Control | Nearly Zero Amplifier Glow |
| Shutter Type | Electronic Rolling Shutter |
| Computer Interface | USB3.0 |
| Built-in Image Buffer | 1GB DDR3 Memory Buffer |
| Cooling System |
Dual Stage TEC cooler: – Long exposures (> 1 second) typically -35℃ below ambient – Short exposures (< 1 second), high FPS, typically -30℃ below ambient (Test temperature +20℃) |
| Optic Window Type | AR+AR High Quality Multi-Layer Anti-Reflection Coating |
| Telescope Interface | 533M: Support C-Mount or M48 (with adapter) |
| Back Focal Length | 533M: 14mm (±0.2) |
| Anti-Dew Heater | Available |
| Weight | 845g |
Let customers speak for us
from 206 reviewsAs a stargazing newbie, I'm so glad I visited the showroom for advice! Andrew was super helpful and I'm very happy with my 8" Dobsonian :)
My comments are based on using it with a 102mm ED refractor, FL 714 mm. My home is in a Bortle 5 location in Christchurch.
This shorty Barlow is an apochromatic design, it uses a brass compression ring and is light at approx.100gms. I've used it several times in mostly poor viewing conditions, and once in above average conditions. In that time I viewed double stars, emission nebulae, open and globular star clusters, and Jupiter. I thought it provided excellent views and on the one occasion when seeing conditions and the city lights were less in the early morning, I was able to achieve 203 x magnification looking at a globular while still getting a reasonable view. Even at 238 x the view was tolerable, albeit quite soft.
I also have a Celestron X-Cel-LX 2X Barlow, so was able to compare the two Barlows. I found them pretty much identical in terms of colour, sharpness and contrast, though someone with better eyesight may notice differences that I can't.
I highly recommend the Astronz 2.5X Barlow, as it can provide substantially higher magnification options if you have, say 3 or 4 eyepieces. Personally, I prefer my 2 X Barlow as its more useful in less than average viewing conditions, which for me is most of the time. However, in above average to excellent viewing conditions, or at a dark sky site, the extra magnification of the 2.5 X Barlow would be very useful. If you are just starting out and wanting to get a Barlow, the Astronz one costs $48 cf. $249 for the Celestron. The choice is pretty much a no-brainer from that perspective.
I'll continue to use both, as different EP combinations and magnification steps will suit different viewing conditions.
The collimator arrived within 24 hours and was exactly what I needed. If didn't take long to realise the collimator itself needed to be collimated which was an easy process and added to learning how to use it. It was easy to use to collimate the Dobsonian Telescope. Thanks Astronz for helping me get underway with my new hobby.
I am so happy with the 8" Dobsonian. The fine focuser and the 2" superview lens where features which other beginner packages didn't have. I went to visit Andrew's store, he didn't confuse me or up sell, and he gave lots of time chatting and showing me the scopes, he gave advice for where to find dark skies and to come along to the societies meeting which introduced me to lots of great people and astronomy. I set the scope up within hours, within a week I had three amazing observing sessions, in dark skies not far from Auckland, the scope is simple and quick to set up and use and I am very impressed by how it has delivered beyond my expectations for power, useability and fun! Highly recommend Astronz
I am delighted to write a report for this product. It is extremely well made and combines a manual as well as electric function for focusing. This is important to me because with my other electric focuser, I was unable to use the telescope visually without having to dismount it. Now I am able to use it visually.
The focusing function allows very precise control. Unlike my previous focuser, there is now no problem from Schmidt Cassegrain mirror slop. I can now search for focus by adjusting in and out of focus and then when focus is found, set the counter to zero. I am a planetary imager and can now be very precise in searching for focus - even during a video capture. When experimenting beyond your "zero" point one can always return to that point precisely.
I have no hesitation in recommending it.
Cheers,
Paul Mallinson
Superbly easy to use and wonderful clear view while abl to clip on phone camera to other side made great photos
From what I’ve tried so far they seem amazing got a few more days to use them in Wellington NZ before we flight back to London so hopefully all good 👍 cheers Frank
I recently purchased the Celestron EdgeHD 8" Optical Tube Assembly from Astronz and had a very positive experience. The sales service was excellent, knowledgeable and provided helpful advice about the telescope and accessories before purchase. Astronz is run by experienced astronomers, which makes a big difference when discussing equipment and setup.
good quality and quick shipping. Andrew was great help.
Awesome definition, great contrast and sharpness.
Easy and reliable way to buy.
Perfect and helpful customer service.
The eye piece and the collimator are awesome.
Very happy with my purchase have been waiting a while to upgrade to the 2 inch family I have been using the eyepiece to veiw through a sct 8 inch so far have not been disappointed crisp clear images
A well built eyepiece of good quality good bang for your buck
I found a receipt yesterday from astronz dated 2004 in which I purchased a laser colminator which still works perfectly
Astronz still delivering excellent products at very competitive prices
Great product well made excellent optics value for money spent astronz excellent service and advice highly recommended
Great telescope and awesome service from Andrew over the holiday period - highly recommend