Moravian Instruments C2-5000A Monochrome CMOS Astrophoto Camera with SONY IMX250 Sensor for 12-bit LONG EXPOSURE with 5-position Filter Wheel
Moravian Instruments C2-5000A Monochrome CMOS Astrophoto Camera with SONY IMX250 Sensor with 12-bit Digitisation ONLY for LONG EXPOSURE
WITH BUILT-IN 5-POSITION FILTER WHEEL for 1.25" / 31mm filters
Sony IMX CMOS 2464 x 2056 pixels, 8.50 x 7.09 mm sensor size, Built-in Tilting Platform, USB 3.0 interface
Ideal for imaging deep-sky objects as its main field of usage, but can be used for other tasks as well (i.e. planetary, lunar, solar etc.).
The ACTIVELY COOLED C2 series CMOS cameras are equipped with SONY IMX GLOBAL SHUTTER CMOS detectors with 3.45 x 3.45 μm square pixels. All used sensors utilize global electronic shutter. This means every pixel within the image is exposed at the same time, as opposed to rolling shutter sensors, which exposes individual lines one after another.There is no difference for long exposures of static objects, but imaging of moving objects using short exposure time using rolling shutter leads to image shape distortions.
One of the benefits of the C2 series is the MECHANICAL SHUTTER function, so that you don't have to close the telescope to be able to take darks. This is especially handy and important if you are running a remote controlled telescope.
The C2 series CMOS cameras were developed for imaging under extremely low-light conditions in astronomy, microscopy and similar areas. Mechanical design of this series inherits from earlier CCD-based G2 Mark II cameras, which makes the C2 series fully compatible with a vast range of telescope adapters, off-axis guider adapters, internal or external filter wheels, Camera Ethernet adapters, guiding cameras etc.
With proper image calibration, C2 cameras provide surprisingly good results in deep-sky imaging. The used CMOS sensors response to light is linear up to very close to saturation point, so, C2 cameras can be used for scientific applications like variable star research, too.
C2 cameras with Sony IMX sensors supporting 12-bit digitization only:
As the 12-bit read mode is always used for long-exposure applications (astronomical photography, scientific research) and all other parameters being the same (sensor size, resolution, pixels size, noise, …), lower price of these cameras may be then very attractive.
Developed and manufactured in Europe to highest standards.
Sensor: Sony IMX250 Monochrome CMOS
Colour filter: none
Resolution: 2464 x 2056 pixels
Pixel Size: 3.45 x 3.45 µm
Imaging Area: 8.50 x 7.09 mm
Diagonal size: 11.07mm
Interface: USB 3.0
Download time: appr. 0.05s with USB3.0 host
Cooling: active cooling, max. ~42 °C below ambient
Internal Mechanical Shutter: yes, blade shutter
Internal Filter Wheel: Optional
External Filter Wheel: Optional
Compatibility with OAG & Standard Adapters: yes
Autoguider Port: No
Available on back order. Usual delivery time: appr. 2 - 3 weeks
C2 Camera Overview
C2 camera head is designed to be easily used with a set of accessories to fulfill various observing needs. Camera head itself is manufactured in two different variants:
Camera with Internal filter wheel.
Camera with control port for External filter wheel. This model allows attachment of several variants of external filter wheels with various number of filter positions and sizes.
C2 Camera without filter wheel (left), with Internal filter wheel (middle) and with attached External filter wheel (right)
C2 camera model with Internal filter wheel accepts two sizes of filters:
Filter wheel with 5 positions for unmounted D31 mm filters or filters in 1.25” threaded cells.
Filter wheel with 6 positions for unmounted D27 mm (or 1”) filters.
C2 camera with Internal filter wheel (left) and with External filter wheel attached (right)
There are two sizes of the External filter wheels, each capable to accept multiple sizes of filters, available for the C2 cameras:
Extra small “XS” size wheel for 8 unmounted filters D31 mm or filters in 1.25” threaded cells.
Extra small “XS” size wheel for 7 unmounted filters D36 mm.
Small “S” size wheel for 12 unmounted filters D31 mm or filters in 1.25” threaded cells.
Small “S” size wheel for 10 unmounted filters D36 mm.
Small “S” size wheel for 7 unmounted D50 mm or 2" filter or filters in 2” threaded cells.
Please note the camera head is designed to either accept Internal filter wheel or to be able to connect to the External filter wheel, but not both. If the Internal filter wheel variant is used, External filter wheel cannot be attached.
Components of C2 Camera system include:
C2 camera head with Internal Filter Wheel (5 or 6 positions)
C2 camera head capable to control External Filter Wheel
External Filter Wheel “XS” size (7 or 8 positions)
External Filter Wheel “S” size (10 or 12 positions)
C1 guider camera
Remark: C1 cameras are completely independent devices with their own USB connection to the host PC. They can be used either on C2 OAG or on standalone guiding telescope.
C1 cameras can share the Moravian Camera Ethernet Adapter with up to 3 other Cx cameras to be accessed over TCP/IP network.
Off-Axis Guider with M48 × 0.75 thread
Off-Axis Guider with M42 × 0.75 thread (T2)
Thick adapter base, compensating EFW thickness to achieve proper back focal distance for cameras without filter wheel
1.75” dovetail rail for G2 camera head
Gx Camera Ethernet Adapter (x86 CPU)
Gx Camera Ethernet Adapter (ARM CPU)
Remark: Moravian Camera Ethernet Adapter allows connection of up to 4 Cx cameras of any type on the one side and 1 Gbps Ethernet on the other side. This adapter allows access to connected Cx cameras using routable TCP/IP protocol over unlimited distance.
5-positions internal filter wheel for 1.25”/D31 mm filters
6-positions internal filter wheel for 1”/D27 mm filters
8-positions external filter wheel “XS” for 1.25”/D31 mm filters
7-positions external filter wheel “XS” for D36 mm filters
12-positions external filter wheel “S” for 1.25”/D31 mm filters
10-positions external filter wheel “S” for D36 mm filters
7-positions external filter wheel “S” for 2”/D50 mm filters
M42 × 0.75 (T-thread) or M48 × 0.75 threaded adapters, 55 mm BFD
Remark: Other standard adapters are available, for instance threaded 2" barrel adapter etc.
Canon EOS bayonet lens adapter
Nikon bayonet lens adapter
C2 camera models are equipped with Sony IMX global shutter CMOS detectors with 3.45 × 3.45 μm square pixels. Individual models differ in resolution only.
All used sensors utilize global electronic shutter. This means every pixel within the image is exposed in the same time, as opposed to rolling shutter sensors, which exposes individual lines one after another. There is no difference for long exposures of static objects, but imaging of moving objects using short exposure time using rolling shutter leads to image shape distortions.
Two lines of C2 cameras are available depending on the available dynamic range (bit-depth of the digitized pixels):
C2 cameras with Sony IMX sensors supporting 8- and 12-bit digitization. Because every 12-bit pixel occupies two bytes when transferred to host PC, 12-bit image download time is longer compared to 8-bit image. Maximal FPS in 8-bit mode is then significantly higher.
C2 cameras with Sony IMX sensors supporting 12-bit digitization only. As the 12-bit read mode is always used for long-exposure applications (astronomical photography, scientific research) either way, lower theoretical download time in 8-bit mode brings no limitations for real-world scenarios. All other parameters being same (sensor size, resolution, pixels size, noise, …), lower price of these cameras may be then very attractive.
C2 camera models with 8- and 12-bit digitization:
|Model||CMOS sensor||Resolution||Pixel size||Image area|
|C2-3000||IMX252||2064 × 1544 pixels||3.45 × 3.45 μm||7.12 × 5.33 mm|
|C2-5000||IMX250||2464 × 2056 pixels||3.45 × 3.45 μm||8.50 × 7.09 mm|
|C2-12000||IMX253||4112 × 3008 pixels||3.45 × 3.45 μm||14.19 × 10.38 mm|
C2 camera models with 12-bit digitization only:
|Model||CMOS sensor||Resolution||Pixel size||Image area|
|C2-3000A||IMX265||2064 × 1544 pixels||3.45 × 3.45 μm||7.12 × 5.33 mm|
|C2-5000A||IMX264||2464 × 2056 pixels||3.45 × 3.45 μm||8.50 × 7.09 mm|
|C2-12000A||IMX304||4112 × 3008 pixels||3.45 × 3.45 μm||14.19 × 10.38 mm|
Remark: Cameras limited to 12-bit read mode are marked with letter A, following the model number. For instance, if C2-12000 marks camera with both 8- and 12-bit read modes, C2-12000A denotes camera model with only 12-bit read mode. All other parameters (sensor size, pixel resolution) are equal.
CMOS camera electronics primary role, beside the sensor initialization and some auxiliary functions, is to transfer data from the CMOS detector to the host PC for storage and processing. So, as opposite to CCD cameras, CMOS camera design cannot influence number of important camera features, like the dynamic range (bit-depth of the digitized pixels).
The sensors used in C2 cameras shows very good linearity in response to light. This means the camera can be used also for entry-level research projects, like for instance photometry or brighter variable stars etc.
C2-3000 (IMX252) response to light
As already noted, there are two lines of C2 camera series, differing in the used sensor. The first series offers four different read modes: