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The QHY21, QHY22 and QHY23 cameras use Sony's high-sensitivity EXview HAD CCD II sensors, ICX674, ICX694 and ICX814, respectively. These sensors have very high QE (close to 80%) and very low thermal noise. QHYCCD's dual stage TE cooling technology reduce the sensor temperature up to-45C below ambient for exceptionally low dark current. Compared to competing models, the QHY cameras achieve -10C to -15C extra cooling, resulting in very low noise and uniform background even during the hot summer months.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
Items that have been opened, damaged or are otherwise unsaleable will be subject to a minimum 10% restocking fee, to be assessed by Telescopes Canada upon receipt of the returned goods
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the 'Complete Orders' link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
QHY21/22/23 SPECIFICATION
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Model
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QHY21
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QHY22
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QHY23 |
CCD Sensor
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ICX674
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ICX694
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ICX814
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Pixel Size
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4.5um*4.5um
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4.5um*4.5um
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3.69um*3.69um
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Resolution
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1940*1460
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2758*2208 |
3388*2712
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Effective Pixels
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2.8mega
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6.1mega
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9.2mega
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Effective Image Area | 8.73mm*6.57mm | 13.79mm*9.93mm | 12.5mm*10.07mm |
AD Sample Depth
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16bit
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16bit
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16bit
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Sensor Size
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2/3inch
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1inch
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1inch |
Readout Noise | 4e to 5e- | 4e to 5e- | 4e to 5e- |
Peak QE | 79% | 79% | 79% |
Fullwell | 15-20ke- | 15-20ke- | 15-20ke- |
Monochrome Version
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QHY21-M
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QHY22-M
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QHY23-M
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Back Focal Length | 17mm(±0.5) | 17mm(±0.5) | 17mm(±0.5) |
Guide Port
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6PIN RJ11 Guide Port
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Color Wheel Port | 4PIN QHYCFW SOCKET | ||
Cooling System
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Dual Stage TEC(-45C below Ambient)
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Camera Interface
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M42/0.75
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Weight
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516g
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516g
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516g
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