Antlia
Antlia Triband RGB Ultra Filter II - 2.00'' Mounted
Antlia Triband RGB Ultra Filter II - 2.00'' Mounted
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The Antlia Triband RGB Ultra Filter II adds the H-Beta 486.1nm line to the Triband RGB Ultra, enhancing its ability to capture finer details of nebulae. It is designed for light pollution suppression for OSC and Mono cameras. The spectral design selected the most substantial information in the RGB bands, which makes Antlia Triband RGB Ultra Filter II possible to shoot over 90% of deep sky objects, in addition to its excellent performance on emission nebula, different from other ultra-narrowband filters, it is able to capture galaxies, reflection nebulae, and star clusters from a Bortle 8 location to Bortle 1 while presenting more balanced RGB colors in your images. Also, it has a broad bandpass designed to cope with faster optics up to the f/2 focal ratio.
Application and Performance:
It is workable to shoot galaxies, reflection nebulae and star clusters.
Refined coating process makes the Triband RGB Ultra filters II with excellent halo suppression and improved signal-to-noise performance.
It has been specifically designed for balanced color transmission using Antlia's experience in spectrum design.
The balanced transmission allows the minimal color cast to broadband emission objects such as stars, galaxies, and globular clusters.
The Triband RGB Ultra II can be used with nearly all systems as fast as f/2 with minimal loss of efficiency or shifts in spectral response.
For visual use, Triband RGB Ultra filter II ensures the high transmittance of the HSOHb emission lines and can be used for observing deep-sky objects with large-diameter telescopes.
The Triband RGB Ultra II is able to better isolate the H-alpha, O3 and blue spectrum from the background light pollution.
The filter provides excellent flexibility and compatibility with both OSC and Mono camera systems.
It facilitates the imaging of most astronomical objects using all optical configurations down to f/2 focal ratio.
When shooting LRGB with mono cameras, unless you are wanting to image LDN (dark nebulae) the Triband RGB Ultra II can be used as a luminance filter replacement for objects such as nebulae and galaxies to improve contrast and signal to noise ratio.
Technical Specifications:
|
H-alpha |
NII |
S-II |
O-III |
H-beta |
|
|
Wavelength |
656.3nm |
658.3nm and 654.8nm |
671.6nm and 673.1nm |
495.9nm and 500.7nm |
486.1nm |
|
Peak Transmission |
＞92% |
＞92% |
＞92% |
＞92% |
＞92% |
|
Blocking |
≥OD4@ 300-1050nm |
||||
|
Filter Thickness
|
2mm+/-0.05mm |
||||
Spectrum Curve:
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