Altair Astro

• Batch-tested for consistency.
• High quality dichroic/dielectric coatings. 
• Anti-Reflection coating to reduce star-halos - stackable.
• UV/IR block for imaging - star bloat reduction with refractors.
• Ultra-flat glass by Schott Germany.
• Precision CNC machined filter cell for strain-free mounting and freedom from tilt.

• Batch-tested for consistency.
• High quality dichroic/dielectric coatings. 
• Anti-Reflection coating to reduce star-halos - stackable.
• UV/IR block for imaging - star bloat reduction with refractors.
• Ultra-flat glass by Schott Germany.
• Precision CNC machined filter cell for strain-free mounting and freedom from tilt.

Altair DualBand 6nm Filter Features:

• Capture the two main emission nebulae bands at the same time, whilst suppressing light pollution, moonlight, and airglow.
• Acquire more data in less time, opening up your imaging window, even into the summer months when it isn't quite dark.
• If you have the 6nm Sii Oiii Ultra filter and the Ha Oiii version, you can capture twice the Oiii data in each imaging session and combine them for true SHO Hubble style imaging with a colour camera!
• Extremely steep bandpass yields maximum contrast in extreme light pollution: 6nm FHWM centred on 500.7nm Oiii wavelength, and 5.5nm FHWM centred on the 671.6nm Sii wavelength.
• Halo suppression anti-reflective coating.
• Can be used with One Shot Colour (OSC) CMOS or mono astronomical cameras for luminance data.
• Includes UVIR blocking for both modified and un-modified DSLR cameras, plus an anti-reflection coating for the ultimate in contrast.
• Best performance at focal ratios at F4.8 or slower, however can be used as fast as F3.6, with minimal contrast impact (conservative estimate - faster may be possible). Like any dichroic filter, contrast increases as focal ratio number increases. More info about light pollution filter performance and focal ratio here.

Altair DualBand 6nm Filter Features:

• Capture the two main emission nebulae bands at the same time, whilst suppressing light pollution, moonlight, and airglow.
• Acquire more data in less time, opening up your imaging window, even into the summer months when it isn't quite dark.
• If you have the 6nm Ha/Sii Ultra filter and the Sii/Ha version, you can capture twice the Oiii data in each imaging session and combine them for true SHO Hubble style imaging with a colour camera!
• Extremely steep bandpass yields maximum contrast in extreme light pollution: 6nm FHWM centred on 500.7nm Oiii wavelength, and 5.5nm FHWM centred on the 656.28nm Ha wavelength.
• Halo suppression anti-reflective coating.
• Can be used with One Shot Colour (OSC) CMOS or mono astronomical cameras for luminance data.
• Includes UVIR blocking for both modified and un-modified DSLR cameras, plus an anti-reflection coating for the ultimate in contrast.
• Best performance at focal ratios at F4.8 or slower, however can be used as fast as F3.6, with minimal contrast impact (conservative estimate - faster may be possible). Like any dichroic filter, contrast increases as focal ratio number increases. More info about light pollution filter performance and focal ratio here.

Feature summary Altair 678C CMOS Camera:

• IMX678 Colour 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 678C CMOS Camera:

• IMX678 Colour 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.

Altair DualBand 6nm Filter Features:

• Capture the two main emission nebulae bands at the same time, whilst suppressing light pollution, moonlight, and airglow.
• Acquire more data in less time, opening up your imaging window, even into the summer months when it isn't quite dark.
• If you have the 6nm Ha/Sii Ultra filter and the Sii/Ha version, you can capture twice the Oiii data in each imaging session and combine them for true SHO Hubble style imaging with a colour camera!
• Extremely steep bandpass yields maximum contrast in extreme light pollution: 6nm FHWM centred on 500.7nm Oiii wavelength, and 5.5nm FHWM centred on the 656.28nm Ha wavelength.
• Halo suppression anti-reflective coating.
• Can be used with One Shot Colour (OSC) CMOS or mono astronomical cameras for luminance data.
• Includes UVIR blocking for both modified and un-modified DSLR cameras, plus an anti-reflection coating for the ultimate in contrast.
• Best performance at focal ratios at F4.8 or slower, however can be used as fast as F3.6, with minimal contrast impact (conservative estimate - faster may be possible). Like any dichroic filter, contrast increases as focal ratio number increases. More info about light pollution filter performance and focal ratio here.

Altair DualBand 6nm Filter Features:

• Capture the two main emission nebulae bands at the same time, whilst suppressing light pollution, moonlight, and airglow.
• Acquire more data in less time, opening up your imaging window, even into the summer months when it isn't quite dark.
• If you have the 6nm Sii Oiii Ultra filter and the Ha Oiii version, you can capture twice the Oiii data in each imaging session and combine them for true SHO Hubble style imaging with a colour camera!
• Extremely steep bandpass yields maximum contrast in extreme light pollution: 6nm FHWM centred on 500.7nm Oiii wavelength, and 5.5nm FHWM centred on the 671.6nm Sii wavelength.
• Halo suppression anti-reflective coating.
• Can be used with One Shot Colour (OSC) CMOS or mono astronomical cameras for luminance data.
• Includes UVIR blocking for both modified and un-modified DSLR cameras, plus an anti-reflection coating for the ultimate in contrast.
• Best performance at focal ratios at F4.8 or slower, however can be used as fast as F3.6, with minimal contrast impact (conservative estimate - faster may be possible). Like any dichroic filter, contrast increases as focal ratio number increases. More info about light pollution filter performance and focal ratio here.

• It can be inserted or removed in seconds. All lens functions (focus, preview screen, image stabilization) work as usual.
• If you have a telescope with short space between reducer/flattener and camera and filter wheel, a clip filter is the solution.
• It protects your sensor from dust build-up during long exposures.

Why choose a SkyTech DSLR Clip-Filter?

• It can be inserted or removed in seconds.
• All lens functions (focus, preview screen, image stabilization) work as usual.
• If you have a telescope with short space between reducer/flattener and camera and filter wheel, or a camera lens, a clip filter is the solution.
• It protects your sensor from dust build-up during long exposures when the mirror is up.

Why choose a SkyTech DSLR Clip-Filter?

• It can be inserted or removed in seconds.
• All lens functions (focus, preview screen, image stabilization) work as usual.
• If you have a telescope with short space between reducer/flattener and camera and filter wheel, or a camera lens, a clip filter is the solution.
• It protects your sensor from dust build-up during long exposures when the mirror is up.

• 8.3mp sensor with 1.45 micron pixels
• 7.7mm x 4.3mm active sensor area.
• Low read noise, approx. 1.35 - 0.57 electrons (e-) or better.
• Saturation (full well) capacity approx. 6.0Ke- electrons (e-)
• High Dynamic Range with 12 bit ADC for high image quality in both light and dark (high contrast) areas.