Altair Astro

High quality filter for CMOS photography with the following features:

• 1st band, CWL495nm FWHM35nm
• 2nd band, CWL 660nm FWHM 35nm
• 1mm thick optical glass with 30 arc sec parallelism.
• UVIR Block and Anti-Reflection Coating.

The new TriBand V2 Filter

• Anti-Halo coating on both surfaces to reduce reflection artefacts from reducers and camera lenses.
• Increased blocking of UV, IR and unwanted visual range wavelengths. UV OD7 (T0.00001%) Visual OD5 (T0.001%) and IR OD4 (T0.01%) for the ultimate in skyglow blocking. This is an order of magnitude better than foreign filters.
• Higher transmission % of desired wavelengths Ttop 93% (Average 5% higher transmission of target wavelengths than V1). In general a 5% gain on foreign filters.
• Ha at 14nm and Oiii at 34nm FWHM for with less tail-off to reduce unwanted light pollution, whilst keeping transmission high compared to the V1.

The new TriBand V2 Filter

• Anti-Halo coating on both surfaces to reduce reflection artefacts from reducers and camera lenses.
• Increased blocking of UV, IR and unwanted visual range wavelengths. UV OD7 (T0.00001%) Visual OD5 (T0.001%) and IR OD4 (T0.01%) for the ultimate in skyglow blocking. This is an order of magnitude better than foreign filters.
• Higher transmission % of desired wavelengths Ttop 93% (Average 5% higher transmission of target wavelengths than V1). In general a 5% gain on foreign filters.
• Ha at 14nm and Oiii at 34nm FWHM for with less tail-off to reduce unwanted light pollution, whilst keeping transmission high compared to the V1.

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.

• Clear bright and sharp image from horizon to horizon for your Allsky Camera.
• Capture meteors, aurora, space stations and satellites over the entire sky.
• 1/2" camera chip will give you a full 180 degree plus image circle.
• 1/3" chip will have slightly clipped top and bottom edges.
• Fits Altair, ZWO, QHY and other Allsky CMOS cameras.
• Colour or mono NIR corrected.

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.

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.

The Altair M48 tilt adjuster is designed to give the perfect image field by making the CCD or DSLR camera sensor completely orthogonal to the telescope's optical axis.