• Aluma_FrontC
    Aluma_tripod_mountAAluma backAluma_FrontC
  • Aluma 77-00



    260,000 pixel back-illuminated CCD with 24 micron pixels, compatible with iOS, Android, Windows, Macintosh, and Linux

    Note:  Special order item.  Nonrefundable deposit is required for sensor.  Balance charged when ready for shipment.


Product Description

Note: For software and user manual downloads, please click the Downloads tab above.

Our mid-size Aluma® Series cameras offer performance and features not available in any other scientific-grade imaging camera.  This lightweight (2.2 lbs) and compact (4.5″ x 4.5″ x 4″ with handles) camera includes two-stage cooling, USB 2.0 and optional WiFi 802.11 b/g/n interfaces, ultra-reliable even-illumination shutter, and fast low-noise readout.  Aluma can be operated from a tablet or smartphone, or from a Windows, Macintosh, or Linux PC.

The Aluma series supports a wide range of accessories, including the 8-position FW8S-Aluma filter wheel with micron-level filter positioning, FW8G-Aluma filter wheel with built-in autoguider, AO-8A Adaptive Optics accessory, and Remote Guide Head.

New!  Aluma is now available in two versions – the original with USB and WiFi, and now a lower-cost Aluma U version with only the USB interface.

Aluma Features include:

  • Wide variety of imaging sensors
  • Light weight, compact design
  • Centered optical axis for optimum instrument balance
  • Ultra reliable even-illumination (photometric) mechanical shutter
  • Support for iOS, Android, Windows, Macintosh, and Linux
  • USB 2.0 and optional WiFi 802.11 b/g/n communications interfaces
  • Full frame image buffering eliminates readout artifacts and provides 100% reliable wireless download
  • 2-Stage TE cooling with typical -50C from ambient
  • Twin variable speed fans with SmartCoolingTM technology
  • High accuracy temperature regulation
  • Built-in RBI Pre-flash (full frame front-illuminated sensors only)
  • External TTL trigger inputs and output
  • Included 110V / 220V power supply and optional 12VDC operation
  • User-rechargeable desiccant plug
  • Built-in 1/4-20 tripod mount
  • Support for high precision 8-position filter wheels
  • Support for external guide head, self-guiding filter wheels, and adaptive optics
  • Bulletproof firmware update capability – virtually impossible to “brick”

Multi-Platform Operation

Aluma is designed to operate via USB 2.0 and optionally WiFi 802.11 b/g/n.  Designed from the ground-up to support operation on any modern computing platform, Aluma is compatible with iOS, Android, Windows, Macintosh, and Linux.  Fully-documented and supported drivers are available for all platforms, including ASCOM drivers.  The Aluma camera interface specification is fully documented, supporting the development of fully custom interfaces.

Software Included

All Aluma models ship with MaxIm LT for Windows – a special version of MaxIm DL specific to our cameras. Aluma also supports third-party applications through ASCOM and native drivers.

Compact and Lightweight Design

Aluma cameras measure just 4.25″ x 4.25″ x 4.0″ with handles (3.5″ without handles) and weigh just 2.2 lbs (1 kg).

Even-Illumination Shutter

All Aluma cameras include a mechanical shutter, which is used for both dark/bias calibration frames and for shuttering exposures on full frame sensors. Rather than using a complex iris shutter, which are prone to failure, the Aluma uses a twin vane shutter and direct drive motor for high repeatability, reliability, and extremely long life.  The shutter is designed to be “even illumination” for the best accuracy in photometric measurements.

iris1The left image shows a flat field image taken with a camera using an iris type shutter. The right image is a flat field image taken under the same conditions using our even-illumination shutter.

Extreme Sensitivity CCD 77-00 Image Sensor

The Aluma 77-00 uses the 0.26 megapixel E2V CCD 77-00 sensor, featuring peak quantum efficiency (QE) of 93% with midband coatings.  This full frame, back-illuminated sensor is designed for the ultimate in sensitivity.  We offer Midband coating for the highest quantum efficiency.  Other coatings are available on special order.

CCD 77-00 Quantum Efficiency Curves

The CCD 77-00 has 512 x 512 pixels at 24 microns square, for a 12.3 mm square optical format.

This back-illuminated full-frame CCD sensor has extremely low noise and extremely high sensitivity. Combining this high-performance sensor with Aluma’s high cooling performance and low readout noise results in exceptionally clean images.


All Aluma cameras include our powerful new SmartCooling technology. The two-stage cooler, powerful fans, and advanced heat sink designed using thermal flow simulation combine to produce typical cooling delta from ambient of -50C.  This is quite a feat considering the Aluma’s very compact and lightweight package.

SmartCooling automatically adjusts the fan speed to optimize cooler performance and power consumption.  The camera’s firmware is constantly monitoring the sensor and heat sink temperatures, as well as controlling the cooler power.  When full cooling power is needed – when ramping down or running near full power – the fans ramp up to their maximum speed, resulting in the strongest possible cooling.  When less cooling power is needed the fans automatically slow to reduce noise levels and power consumption. SmartCooling also prevents any possibility of overheating by backing off power if the heat sink gets too hot – so you don’t need to worry if your camera is baking in a hot observatory during the day.

Included Accessories

Each Aluma camera package includes:

  • MaxIm LT software – please use this form to request your license
  • Deluxe carrying case
  • Universal power supply (110V / 220V, 50-60 Hz)
  • 2″ Nosepiece adapter
  • USB flash drive containing software, drivers, and documentation
  • 15 foot (4.5 m) USB cable
  • Tracking interface cable

Optional Micron-Precision Filter Wheel

The optional FW8S-Aluma 8-position filter wheel includes a positive centering mechanism that precisely centers each filter in the exact same position every time. This single-pixel accuracy completely eliminates ghost images of dust spots and other artifacts after flat-fielding.

Positive detent mechanism provides single-pixel filter position accuracy

flatfield2Precision flat-fielding with utlra-accurate indexing

The left-hand image shows a dust spot on the filters.  A flat-field calibration frame was taken, then the filter wheel was rotated several times before taking a second picture, which was flat-field calibrated, at right.  No evidence of the dust spot is visible.  This high precision results in the highest quality images and excellent photometric accuracy.

The Aluma wheel holds standard 36 mm filters, and inserts are available for 1-1/4″ filters, which are suitable for smaller format CCD sensors.

The Aluma filter wheel replaces the camera’s front plate, resulting in the minimum possible back-focus, ensuring that the camera / filter wheel combination will reach focus on the widest possible variety of optical systems.

fw_close1_red1-287x0Integrated autoguider with adjustable pick-off mirror and focal reducer

For astronomical imaging, the wheel is available in the FW8G-Aluma configuration.  This adds a built-in focal reducer and autoguider.  The pick-off mirror and guide camera focus can both be adjusted and locked using simple thumbscrews.  With the autoguider positioned in front of the filters, optimum guiding sensitivity is provided for all filter slots.  Using a built-in autoguider system eliminates issues with flexure, mirror shift, and other mechanical problems that can degrade guiding accuracy.

Interchangeable plates are available to switch your wheel between FW8G and FW8S configuration.

Optional AO-8A Adaptive Optics


All Aluma models can operate with the AO-8A Adaptive Optics accessory.  The AO-8A uses a tip-tilt window to quickly and precisely adjust the image position in response to autoguider feedback.  With Adaptive Optics there is no backlash, stiction, or lag, and the movements are extremely precise and accurate.  This allows the AO-8A to not only remove the effects of periodic error, drift, and wind gusts, but also reduce the effects of atmospheric seeing.

For more information please see AO-8T.


Additional Information

A/D Converter

16 bits

Adaptive Optics Option




CCD Size

12.3 mm x 12.3 mm

Computer Interface

USB 2.0 / WiFi 802.11 b/g/n, USB 2.0

Cooling Delta

~ 50 °C

Dark Current e/p/s at 0 C

typical 60 e-/pix/sec; 0.7 at -30C


0.1 sec minimum

Filter Size

36mm / 1.25″

Filter Wheel Option


Full Well Capacity

300,000 e-

Imaging CCD

E2V CCD 77-10

Imaging / Pixel Array

512 x 512

OAG Option


OS Compatibility

Windows 32 and 64 bit, Macintosh, Linux, iOS, Android

Peak QE


Pixel Digitization Rate

1 MPix/sec

Pixel Size

24 μm


12 VDC, 5A max

Read Noise

7 e-

Remote Guide Head


Self-Guiding Filter Wheel



Mechanical, Even-illumination

Temperature Regulation


Total Pixels

262,000 pixels


2.2 lbs


User’s Manual

Aluma Series user’s manual.


Technical Overview

Technical overview of the Aluma 77.


Specification Sheet

Product Specifications for the Aluma 694.


Backfocus Table

Backfocus configuration table



Drivers and Camera Configuration Utility

Aluma uses the DL Imaging driver package. Download the latest drivers and camera configuration utility.


MaxIm LT Software

Camera owners can request a MaxIm LT license here (camera serial number required):


To get started immediately, request the full MaxIm DL Pro demo version here (click Demo tab):


Once you receive your MaxIm LT license, simply replace your demo license using Help menu Enter License.

MacOS and Linux Drivers

Available by request. Please post in our support forum, Aluma section:


Software Development Kit

Available by request. Please post in our support forum, Aluma section:


Firmware Updates

Visit our Firmware Archive here: