Filters & Acc.
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Filters & Acc.
Another first for solar astronomy, the Altair G-Band 2nm Solar filter enhances finer details in the solar photosphere.
Altair 2nm G-Band Solar Contrast Filter filter specifications:
- Standard 2" Filter Threaded Aluminium Cell
- CWL 430.3nm @ 96% transmission, tolerance 1%
- FWHM 2nm, tolerance 0.5nm.
- 1.85mm thick quartz ?/4, Parallelism (arcsec) 30"
- Si02 "hard" overcoat with UVIR Block 300-1100nm and Anti-Reflection Coating
- High resolution spectrographic test report included corresponding to each individual filter.
409.00 € 368.00 €
Estimated delivery time : 2-4 weeks
The Altair Astro Planet-Killer 685nm Premium IR Pass Filter is designed to deliver sharper lunar and planetary images with Monochrome CCD or CMOS cameras.
69.00 € 62.10 €
Estimated delivery time : 2-4 weeks
This filter transmits only the H and Oiii light from emission nebulae, with almost total suppression of unwanted light....
609.00 € 548.00 €
Estimated delivery time : 2-4 weeks
This is the filter for imaging in moonlight or light pollution with a colour CMOS camera - or even in dark-sky conditions if you want total isolation and control over your channels, narrowband-style.
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.
309.00 € 278.00 €
Estimated delivery time : 2-4 weeks
The Altair Dichroic Solar Energy Rejection Filter or D-ERF protects your telescope and solar imaging equipment from excessive heat build-up when solar imaging or observing with your Daystar Hydrogen Alpha Quark, or other Hydrogen Alpha Etalon filters.
699.00 € 629.00 €
Estimated delivery time : 2-4 weeks
The Altair 395nm NUV filter selectively passes light of the two main Calcium wavelengths emitted by the sun: CA-K line at 393.37nm, and the CA-H line at 396.85nm.
199.00 € 179.00 €
Estimated delivery time : 2-4 weeks
Altair Astro Premium 1.25" CLS-CCD Filter features:
- Multi-Layer Anti-Reflection coating to reduce star-halos and reflections from camera optical window.
- Batch-tested for consistency.
- Ultra-flat glass by Schott Germany. 1.85mm Glass 30sec parallel, optical polish to MIL Spec. MIL-O-13830.
- High quality dichroic/dielectric coatings. Electron-beam gun evaporation with Ion-assisted deposition coating technology for durability and resistance to scratching, as well as stability on CWL (central wavelength). No deviation affected by temperature change.
- UV/IR block for imaging - star bloat reduction with refractors.
- Precision CNC machined filter cell for strain-free mounting and freedom from tilt.
79.00 € 71.10 €
Estimated delivery time : 2-4 weeks
Altair Quad-Band 2" Filter for OSC CMOS, CCD and Modified or Unmodded DSLR cameras.
This is the new QuadBand V2 Coating technology which includes:
- Halo suppression. We have not had any reports of halos caused by this filter in testing.
- 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.
- Higher transmission % of desired wavelengths Ttop 95% (Average 5% higher transmission of desired wavelengths).
- Ha and Oiii wavelengths at 35nm FWHM for with less tail-off to reduce unwanted light pollution.
159.00 € 143.00 €
Estimated delivery time : 2-4 weeks
SkyTech Quad-Band EOS Clip Filter for DSLR cameras (including astro-modified) Narrowband Bi-Colour imaging is a growing new trend in astrophotography, especially popular in light polluted areas, or for imaging in rural areas in moonlight.
159.00 € 143.00 €
Estimated delivery time : 2-4 weeks
The Altair Astro Premium Oiii 6.5nm filter is designed for astro imaging of nebulae with Mono CCD or CMOS cameras, blocking light pollution by cutting out the light pollution wavelengths. The filter blocks UV IR and has an anti-reflection AR coating.
255.00 € 229.00 €
Estimated delivery time : 2-4 weeks
The Altair Astro Premium Sii 6.5nm filter is designed for astro imaging of nebulae with Mono CCD or CMOS cameras, blocking light pollution by cutting out the light pollution wavelengths. The filter blocks UV IR and has an anti-reflection AR coating.
255.00 € 229.00 €
Estimated delivery time : 2-4 weeks
The Altair Astro Premium 7nm Ha filter is designed for astro imaging of nebulae with Mono CCD or CMOS cameras, blocking light pollution by cutting out the light pollution wavelengths.
259.00 € 233.00 €
Estimated delivery time : 2-4 weeks
