QHY 268 MONO APS-C

Model

QHY268M/C

Image Sensor

SONY APS-C CMOS Sensor IMX571

Sensor Type

Back Illuminated (BSI)

Pixel Size

3.76um x 3.76um

Sensor Surface Glass

Multi Layer AR coating

Effective Pixels

26 Megapixels

Effective Image Area

6280*4210 (includes the optically black area and overscan area)

Full Well Capacity

51ke-
75ke- or above in extended full well mode

A/D

Native 16-bit (0-65535 greyscale) A/D

Full Frame Rate

USB3.0 Port:
Full Resolution 6.8FPS @8BIT 6FPS @16BIT
2048lines 13.6FPS @8BIT 11.5FPS@16BIT
1080lines 25.4FPS @8BIT 19.5FPS@16BIT
768lines 35FPS @8BIT 25FPS@16BIT
480lines 50FPS @8BIT 34FPS@16BIT

Read Noise

1.1e- High Gain, 3.5e- Low Gain
(5.3e- to 7.4e- in extended full well mode)

Dark Current

0.0005e/pixel/sec @ -20C 0.001e/pixel/sec @ -10C

Zero Amplifer Glow

Yes

Exposure Time Range

30us - 3600sec

Firmware/FPGA upgrade

Fully Support. via Camera USB port

Shutter Type

Electronic Shutter

Computer Interface

USB 3.0

Built-in Image Buffer

1GByte DDR3 Memory

Cooling System

Two-stage TEC coolerLess than 1S lower than ambient temperature -30C in continuous modeMore than 1S continuous mode or lower than ambient temperature -35C in single frame mode

Anti-Dew Heater

Yes

Humidity Sensor*

QHY268M：Yes
QHY268C： NO

Center inclination adjustment *

Yes

Extended Fullwell Mode*

Yes

2CMS Mode*

Yes

Telescope Interface*

QHY268C: M54/0.75 （with CAA）and M48 (with standard adapter)

QHY268M: Support M54 and M48 (with standard adapters )

Optic Window Type

AR+AR High Quality Multi-Layer Anti-Reflection Coating

Back Focal Length*

QHY268C: 17.5mm (without CAA)
This intercept does not include CAA. If CAA is used, it increases by 6mm (23.5mm total). Please check the mechanical drawing below for details.

QHY268M: 12.5mm (with CAA)
If used with the QHY filter wheel, the actual calculated intercept is 12.5mm. The actual BFL (the intercept from the CMOS chip to the top of the camera) is 14.5mm. Since most uses will match CFW with monochrome cams, please take 12.5mm as major reference. Check the mechanical drawing below for details.

Weigth

QHY268M:855g