QHY 21
Discontinued. Please see QHY533M.
- SKU:
- QHY21
- Availability:
- Discontinued. Please see QHY533M.
- Weight:
- 2.88 KGS
Discontinued. Please see QHY533M.
Bundle discount
- Optolong 36mm LRGB filters for HK$1590! (originally $1890)
- Optolong 36mm 6.5nm S-II/H-alpha/O-III for HK$2750 only (originally HK$3890)
- QHYCFW2-S 5x36mm or 6x1.25" for only HK$2290 (originally HK$2790)
- QHYCFW2-M 7x36mm (or 5x2" and 5x50mm) for only HK$3090 (originally HK$3590)
Description
QHY 21 is a 2.8 megapixels monochrome CCD camera with 79% peak QE, one of the highest among consumer grade astronomical CCD cameras. Cools 45ºC below ambient which further reduces the negligible thermal noise Sony sensors typically posses. Readout noise is only 5 e-, the lowest among QHYCCD cameras. Combined with high QE and low readout and thermal noise, QHY 21 is great for all deep sky astronomical imaging including narrowband imaging.
With air-proof CCD chamber filled with argon gas and built in optical window heater, moisture are no longer a concern for astrophotographers imaging at humid regions.
A cable fixer is also included for robust cables connection.
Includes:
- QHY 21 camera x1
- M42 to 2" nosepiece adapter x1
- DC 201 with 9 pin power cable x1
- Car cigarrate power cable x1
- 1.8m Belkin USB cable x1
- 1.5m ST-4 guiding cable x1
- Metalic cable binder x1
- Silica desiccant tube with gels x1
- All shipped in pelican case
| Sensor | Sony ICX674 |
| Effecitve pixel count | 2.8 Megapixels |
| Pixel size | 4.54µm x 4.54µm |
| Peak quantum effiency | >60% @ H-alpha, 70% @ 450nm |
| Full well capacity | 15k e- to 20 ke- |
| Anti blooming gate | -105dB |
| Microlenses on chip | Yes |
| Total pixel array size | 2020[H] x 1476[V] |
| Effective pixel array size | 1940[H] x 1460[V] |
| Chip size | 10.7 mm x 9.2 mm |
| Effective area | 8.8 mm x 6.6 mm (approx.) |
| Typical size | 2/3 inch |
| Readout method | Progressive Scan |
| Shutter | Global electronic shutter |
| Download speed | 1.25 MPixels/s |
| Preview speed (4*4 binning) | 4.4 MPixels/s |
| Readout noise | 5 e- @ 1.25 MPixels/s |
| Supported binning modes | 1*1, 2*2, 4*4 |
| System gain | 0.25 - 0.30 e-/ADU |
| Analog-digital converter | 16-bit with CDS and Pre-amp |
| Power consumption | 3.5 W (0% cooling power) |
| 12.8 W (50% cooling power) | |
| 25.8 W (100% cooling power) |
Thermal specification
- 2-stage TEC -45ºC below ambient
- Airproof CCD chamber with removable silica tube socket
- Built-in active cooling fan
- Built-in optical window anti-dew heater
Interfaces
- C mount for connecting to telescope
- USB 2.0
- 4 pin QHYCCD filter wheel communication port
