Aluma AC4040 Filter Wheel Package

Aluma AC4040 Filter Wheel Package

$13,998.00 USD$32,998.00 USD


  • Aluma AC4040 scientific CMOS camera
  • AFW-10-50SQ filter wheel



SBIG Aluma AC4040

The Aluma AC4040 is a large format Scientific CMOS camera, featuring a 16.8 megapixel sensor with 9 micron pixels.  The camera is compatible with the StarChaser SC-3 Guider and optional AO-X Adaptive Optics accessories.

The Aluma AC4040 is available in Front Illuminated (FSI) and ultra-sensitive Back-Illuminated (BSI) versions.  BSI versions are offered with VIS-NIR and UV-VIS optical coating options.

FSI cameras are currently available with Class 1 or Class 2 sensors.  Class 2 sensors have been individually selected to meet SBIG's requirements for long exposure operation. BSI models are offered with Class 1 sensors, or Class 0 sensors via special order.

Download Product Data Sheet

Availability:  FSI Class 1 and Class 2 currently in stock.  BSI Class 1 expected shipping date is January 2022.

BSI Class 0 sensors are special order; expected to be available March 2022.  Deposit required.  Please call for pricing.


SBIG AFW Filter Wheels

SBIG AFW Filter Wheels are ultra-thin wheels for our large format cameras.  With a thickness of only 0.55" (14 mm), they add minimal back focus to your system.

AFW series wheels are compatible with all SBIG cameras using our "STX" style adapter plates.  This includes our popular Aluma AC Advanced CMOS models as well as our legacy STX and STXL models.

Compatible with All Large-Format SBIG Cameras

Three versions are available:

  • AFW-10-50SQ
    • 10 Filter Slots
    • 50 mm Square Filters
  • AFW-12-50R
    • 12 Filter Slots
    • 50 mm Round Filters
  • AFW-16-36R
    • 16 Filter Slots
    • 36 mm Round Filters

The AFW-10-50SQ is recommended for use with our SBIG Aluma AC4040 cameras, and legacy STX-16803, and STX-16801 cameras.

The AFW-12-50R is recommended for use with our SBIG Aluma AC2020 cameras, and legacy STXL series cameras.

The AFW-16-36R is recommended for use with our ASBIG Aluma AC2020 cameras.

Compatible filters are available at additional cost - please see Optical Filters.

Now Compatible with Compact SBIG Cameras

The AFW-16-36R can now be adapted to the compact STC and Aluma CCD series cameras using the AFW to Small Format Camera Adapter.  This provides a massive 16 slot option for all our compact SBIG cameras.


Two AFW wheels can be stacked to add even more filter slots, using the available Dual AFW Filter Wheel Adapter.  "Virtual Slots" can be assigned, which map to different slots on the two wheels.  If you leave one slot empty in each wheel you get almost double (less two) available filter slots.  If you sometimes need to stack filters then you can have even more virtual slots.

For More Information Click Description Below

50mm Square

Additional Information

SBIG Aluma AC4040


0.001-3600 sec

OS Compatibility

Windows 7, 8, 10 x86/x64, MacOS 10.14 "Mojave" x86 binaries, Ubuntu 18.04 LTS x64, Raspbian Buster armhf, Ubuntu MATE arm64

Full Frame Download

0.75 second

Pixel Digitization Rate

100 MHz


3.5 lbs / 1.6 kG

Filter Size

50mm Square

Read Noise (typ)

3.7 e- typical

Temperature Regulation


Computer Interface

USB 3.0


12 VDC 8A

Cooling Delta

~ 40 °C typical, water cooling option included

Adaptive Optics Option

AO-X with StarChaser SC-3

A/D Converter

Dual 12 bit with HDR capability

Dark Current e-/p/s

0.3 e-/p/s typical

Full Well Capacity

74,000 e- (depends on mode)

Sensor Size

36.8 mm x 36.8 mm

Imaging / Pixel Array

4096 px x 4096 px


Rolling electronic, Mechanical dark shutter

Self-Guiding In Front of Filters

Yes with StarChaser SC-3

Pixel Size

9 μm

Total Pixels

16.8 million pixels

Filter Wheel Option


OAG Option

StarChaser SC-3

Imaging Sensor

Gpixel GSENSE4040

Sensor Grade

FSI Class 2, FSI Class 1, BSI UV-VIS Class 1, BSI VIS-NIR Class 1

SBIG AFW Filter Wheels

Computer Interface


OS Compatibility

Windows 32 and 64 bit OS, Mac


4 lbs

Filter Size

50mm Square