Altair Astro

• Capture the two main emission nebulae bands at the same time, whilst suppressing light pollution, moonlight, and airglow.
• More data in less time, opening up your imaging window, even into the summer months when it isn't quite dark yet. Capture twice the Oiii data, whilst obtaining Sii to complement the Altair Ha Oiii DualBand filter.
• Extremely steep bandpass yields maximum contrast in extreme light pollution: 3.5nm FHWM.
• Halo suppression anti-reflective coating.
• Can be used with One Shot Colour (OSC) CMOS and also with mono astronomical cameras for luminance data.
• Includes UVIR blocking for both modified and un-modified DSLR cameras, plus an anti-reflection coating for halo suppression. 
• Best performance at focal ratios as fast as F4.8, with contrast increasing as focal ratio increases. More info about light pollution filter performance and focal ratio here.
• The 2" filter has standard M48x0.75mm thread, and fits inside the Altair Magnetic Filter holders, standard 2" filter wheels, plus the Altair Canon / Nikon DSLR lens to astro CMOS adaptors. 

• Reduces approx. 98% of heat reaching the optics to keep Etalon from drifting off-band and protects your expensive equipment.
• Spectrographic Transmission test report included showing the performance of each individual filter.
• 32-36nm FHWM Bandpass at H-alpha wavelength of 656.28 nm Transmission ~ 95-98% (Tolerance is about 3%).
• 32-36nm FHWM Bandpass with CWL at 395nm covering Calcium H-Line and Calcium K-Line wavelengths. Transmission - 85-90% (Tolerance is about 3%).
• Visible light blocking (area of maximum solar radiation and heat generation): Average OD4 ~0.001%T @400-700nm.
• UVIR average blocking OD5 ~0.001%T between 200-1100nm
• Extra Deep IR Blocking up to 1700nm Average OD2 (1%) (lowest solar radiation).
• Quartz Element Diameter 95mm, Thickness 8mm, Weight 125g
• Multilayer coatings with SiO2 protective overcoat for a long life and easy cleaning.
• ERF Holder cell included with soft tip threaded knobs. Tough and very light, easy to disassemble for cleaning the filter with optical wipes. Cell does not put any tension on the optics. For this reason the glass element is able to move slightly within the cell by about 0.5mm.

Altair 2 inch Magnetic Filter Holder - M48F - M54M V2

• Enables connection to flatteners and reduers with M48x0.75mm male thread, such as Altair PlanoStar or Starwave, and Altair or other cameras with M54x0.75mm female thread.
• Optical path length is 17mm, therefore you need to incorporate this amount in your spacing calculations.
• The maximum height the filter can protrude from the surface of the slider is 6.85mm. The threads of the filter are buried, therefore this measurement does not include the threads of the filter. There is allowance for maximum filter thread depth of 3.6mm.
• Includes a 2" filter holder/slider. Additional 2" and 1.25" Filter Sliders are available separately.

Feature summary Altair 678M CMOS Camera:

• IMX678 Starvis 2 CMOS Sensor
• On-chip HGC and LCG Support
• 3840 x 2160 pixel resolution:
• 2 um Square Pixels
• 1/1.8-inch Optical Format
• 12-bit ADC
• 512mb DDR3 Memory
• G Sensitivity: 3637mv
• Low Noise: 0.42 to 2.43e- 
• Fast Frame Rate 47 FPS in 8bit mode
• Binning from 1x1 to 8x8 in either stacking or averaging modes.

Feature summary Altair 664C CMOS Camera:

• IMX664C Colour CMOS Sensor
• On-chip HGC, LCG and HDR Support
• Resolution: 2688 x 1520 (4.1mp)
• 2.9 um Square Pixels
• Diagonal 9.02 mm (Type 1/1.8 Optical Format)
• 12-bit ADC
• 512 Mbyte Memory
• Sensitivity: 2000 m V or more per 1 µm2
• Low Noise: 6.2 – 0.69 e-
• High Frame Rate 97 FPS @ 2688*1520 8bit mode
• Binning from 1x1 to 8x8 in either stacking or averaging modes.

Feature summary Altair Hypercam 585M CMOS Camera:

• TEC cooling with heatsink for extra low noise
• On board temperature sensor for perfect dark frame calibration.
• 5A 12v DC Power supply included, with 110-240v input.
• IMX585 Mono 8.3mp Starvis 2 Back Illuminated CMOS Sensor
• On-chip HGC, LCG and HDR Support
• 3840 x 2160 pixel resolution
• 2.9 um Square Pixels
• 1/1.2-inch Optical Format
• Sensor size: 11.14 x 6.26 mm (12.85mm Diagonal)
• 12-bit ADC (with 16bit output in HDR mode)
• 512Mbyte DDR3 Memory buffer
• Low Noise: 0.65 to 0.5e- in HCG mode
• Fast Frame Rate 47 FPS in 8bit mode
• Binning from 1x1 to 8x8 in either stacking or averaging modes.

The Altair Electronic Filter Wheel EFW holds 5x2" astronomy filters and is driven by a precision stepper motor with accurate positioning system. 

The Altair Electronic Filter Wheel EFW holds  8x1.25" astronomy filters and is driven by a precision stepper motor with accurate positioning system. 

The Altair Electronic Filter Wheel EFW holds 7x2" astronomy filters and is driven by a precision stepper motor with accurate positioning system.