TMB Pro Series UV/IR Cut Imaging Filter

The TMB Pro Series UV/IR Cut Imaging Filter is designed to block ultraviolet (UV) and infrared (IR) light, allowing only visible wavelengths to reach your camera sensor. Most telescope optics are optimised for visible light, so blocking UV and IR helps produce sharper, more accurate images with improved contrast and detail.

This filter is ideal for colour CMOS and CCD cameras, and can also be used with monochrome cameras. In addition, it serves as a protective barrier for your imaging equipment, reducing the risk of dust settling on your optics during long exposure sessions.

With its robust optical design and high-quality coatings, the TMB Pro Series UV/IR Cut Filter ensures maximum light transmission in the visible spectrum while minimising unwanted wavelengths, making it a simple but essential tool for astrophotography.

The Astronomik H-alpha filter is a narrow band filter for CCD photography. The filter lets the H-alpha light of emission nebulae pass and blocks nearly the whole remainder of the spectrum where the CCD is sensitive.

The full width at half-maximum (FWHM) of 12nm is optimized for the use with common CCD cameras and allows the use of very fast optics. It should be noted that the filter has a transmission of up to 99%.Another advantage of the 12nm filters is the availability of guiding stars for cameras with a built-in-autoguider (SBIG). If you use a very strong filter like our 6nm filter you often won’t find a usable guidestar.The range of application extends from 1:2.8 to 1:15. Transmission losses and chromatic distortions, which arise with other filters, only occur with Astronomik filters when extremely bright aperture ratios of 1:2 and more come into play.

Main use

The Astronomik H-alpha-CCD (12nm version) increases the contrast between objects, in this case between the H-alpha emission line and the skyglow background. Our Astronomik H-alpha-CCD (12nm version) completely suppresses the emission lines of artificial lighting (mercury (Hg) and sodium (Na)) and skyglow.

Other uses

• When using the OIII CCD and the SII-CCD filters you can obtain three-color images of emission line objects (gas nebulae) from locations with very strong light pollution. To do so, you would take an image in three different wavelengths, select each one as a color-channel in Photoshop and paste them together as a color image.
• The Astronomik H-Alpha filters may NOT be used for solar observation.
• If you plan to create color images from emission line data, our CLS-CCD filter is a great choice for the Luminance channel.

Suitability

• Visual observation (dark skies): Unsuitable
• Visual observation (urban skies): Unsuitable
• Film photography: Reasonable, but very long exposure times
• CCD photography: Very good, huge contrast enhancement at H II-emission nebulas
• DSLR photography (original): Good, reduced sensitivity in the H-alpha band
• DSLR photography (astro modified): Very good, huge contrast enhancement at H II-emission nebulas
• DSLR photography (MC modified): Very good, huge contrast enhancement at H II-emission nebulas
• Webcam / Video (Planets): Unsuitable
• Webcam / Video (Deep Sky): Good, good contrast enhancement with bright objects

Technical Data

• typ. transmission of more then 95% at the H-alpha line (656nm)
• Complete blocking from all disturbing wavelengths in the infrared
• Parfocal with other Astronomik filters
• Glass thickness: 1mm
• Completely resistant against high humidity, scratches and aging effects
• Diffraction limited, the filter will not reduce the optical performance of your telescope!
• Astronomik filters are delivered in a high-quality, long lasting, filter box
• Since 2008 we do ship filters with a completely new design. Any kind of halo or strange reflection is a matter of past

L-eXtreme is a two 7nm bandpass filter which can be used with one-shot color cameras like DSLR's (digital SLR), and monochrome CCD cameras, it is also more suited for fast systems. The convenience and cost effectiveness of this filter allows amateurs to image a rich emission nebulas, even in bright, light pollution skies. Optolong believes the design of L-eXtreme filter would be better choice for fast systems in competitive price. It isolates the H-Alpha, and Oxygen III nebula emission lines so that the contrast and signal-to-noise ratio between nebulae were maximized. For people who is living in very light polluted areas, or when the moon is out, the L-eXtreme will be a good filter.

Unlike the Optolong L-eNhance filter which is a tri-band (transmits Hb, Ha, and OIII), the L-eXtreme filter is dual band that passes Ha and OIII emission lines.The advantage of the L-eXtreme filter is that there is no transmission between the H-beta and OIII lines, as there is no nebula emission lines there. In this case, it isn't letting light pollution come through so that maximize nebulas signal and make the sky background darker while imaging. The L-eXtreme filter should better isolate the emission lines only and better protect from light pollution.

Hydrogen is the largest, the most primitive, the simplest, and the oldest element in the universe. Scientists consider that Hydrogen amounts to more than 90% of visible substance in space. Our sun is 5 billion years old, but so far hydrogen is still the key matter of nuclear fusion. While the sulfur element does not have much scientific significance, so keeping H and O is meaning for exploration of life.
Therefore, we highlight H-a, H-b, O3 and O2, and reduce the signal of sulfur.

Spectrum and Characteristics

• Sbustrate: B270
• Thickness: 1.85mm
• Tpeak: T>90%
• Blocking range: 300-1000nm
• Blcoking depth: light pollution line blocking >99%
• Surface quality: 60/40
• Transmitted Wavefront RMS: λ/4

Antlia LRGB-V Pro 系列滤镜专为使用 CCD 和 CMOS 传感器的单色相机而设计。适用的传感器包括 KAF/KAI 传感器、Sony IMX 传感器、GSENSE 和其他传感器制造商。LRGB-V Pro 套件旨在大致均衡来自红色敏感 CCD 探测器通量的 RGB 响应。结果是，您可以实现 1:1:1 均衡的 RGB 曝光，同时具有简化的后期处理和缩短的成像时间的优势。新的 LRGB-V Pro 系列滤镜在绿色和红色通道之间具有精心设计的光谱间隙，以最大限度地减少光污染的影响并提供有用频率的高透射率。滤镜的设计最大限度地捕捉了较暗星系和星云发射的细节。LRGB-V Pro 系列滤镜保证 B 和 G 滤镜中 OIII 波段的高透射率（蓝色和绿色的 OIII 信号 >95%）。B 通道的带宽变窄是为了改善由于 B 通道过度曝光而导致的恒星周围的蓝色通道溢出（光晕）。 Antlia LRGB-V Pro 系列滤光片通过 G 和 R 滤光片之间的宽间隙设计阻挡了 589nm 左右的发射线，从而抑制了高压钠灯和汞路灯的光污染，并实现了更自然的色彩平衡。基板厚度的均匀性使所有 Antlia 滤光片都具有良好的共焦性能。

LRGB-V Pro系列套装的亮点

1. 优质镀膜技术和精细抛光的基片 我们优化了质量选择流程，以确保高度均匀的玻璃基片。我们采用先进的光学镀膜技术和双面精密抛光，使所有滤镜均具有一致的共焦和光学性能。 2. 三个 RGB 通道中的每一个通道都实现了最大化的色彩平衡和对比度以及出色的 S/N 性能 玻璃基板的两侧沉积了数十层涂层，使 LRGB-V Pro 滤镜能够实现高 SNR。防反射涂层和精心设计的光谱间隙可最大限度地减少不必要的光散射，并最大限度地提高每个滤镜通道的有用信号数据。

3. 更紧密的星体轮廓和减少光晕 LRGB-V Pro系列套装的截止率经过高级设计，可最大限度地减少明亮星体周围的光晕并减少星体膨胀。我们精心设计的蓝色通道传输特性针对的是蓝色星体膨胀问题。

用途与性能：

1. 专为单色CCD和CMOS相机设计

2. 天体、星系、星团和星云的出色成像色彩

3. AR增透膜设计，减少二次反射和星晕

4. R-Filter 提供最大程度的 H-alpha 和 S II 发射传输

5. B/G 重叠使 OIII 线的能量加倍

6. 平衡的 RGB 设计为大多数望远镜光学系统提供 1:1:1 的曝光时间

7. 所有 Antlia LRGB-V Pro 滤镜的边缘均经过涂黑处理，以消除杂散光的内部反射

8. 四个 LRGB 滤光片的基板厚度均保持严格的公差

9. 不推荐用于太阳观测和成像

10. 不建议目视观察

重要提示：使用任何共焦滤光片时，用户在长时间成像过程中仍可能会遇到滤光片之间的焦点偏移。重要的是要记住，由于望远镜筒和玻璃光学元件之间的差异收缩，温度变化会改变光路的长度。建议摄影师每 1 到 2 小时手动或自动在软件中检查一次焦点。如果将望远镜从温暖的环境带到室外，则需要更频繁地检查焦点，直到设备稳定在接近环境温度为止。

技术规格：

基础基材：光学基材

滤光片厚度：1.25'' 为 2mm+/-0.05mm

表面质量：S/D（划痕/凹陷）= 60/40（参考 MIL-O-13830）

透射波前：Lambda/4 或更好。

平行度：小于 30 角秒

单面/无胶基材

Astronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera.

The Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels. While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems. A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.

To give you all the tools to gather the best data possible we have expanded our line of Luminance filters: Now you can select a Luminance filter perfectly matched to the kind of telescope you use, to get the highest signal and sharpest image for the Luminance channel!
Depending on the color correction of your scope you may use a wider spectral window for the Luminance data. The L1 filter has the widest spectral window, the L2 is about the same as our current L-Filter and the L3 is much narrower.
If you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect color correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.

The transmission curve characteristics and coatings on the new Luminance filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies.

Like all Astronomik Filters, the new Luminance filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.

Additional note for observers working under light polluted skies:
If your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted artifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.

它是一种 3nm 双波段，旨在大幅减少光污染的影响，3nm 将星云的辐射隔离为 H-Alpha（红色）和 OIII（绿-蓝）。它可以阻挡光污染，最大化​​星云信号，并使天空背景变暗。它还可以阻挡汞蒸气灯、高压和低压钠蒸气灯的人造光以及由我们大气中的中性氧排放引起的不必要的自然光。最大化星云在 OIII（496nm 和 500nm）和 H-alpha（656nm）中的主要发射线的传输。但是，与 DSLR、彩色/MONO CMOS 和 CCD 一起使用时，此滤镜不适用于快速比率系统。

L-Ultimate的优点在于只通过发射线OIII(500.7nm)和Ha(656.3nm)，这样其他光污染发射线全部被排除，成像时只捕捉到星云的发射和反射信号，因此图像的天空背景更暗，最大程度提升了星云的对比度和信噪比。在重光污染区域，该产品还能选择性地过滤通过星云发射线的光污染和杂波信号，最终避免光污染对天文摄影的影响。

与双窄带 L-eNhance 和 L-eXtreme 系列不同的是，L-Ultimate 是一款双 3nm 带宽滤镜，只通过 Ha 和 OIII 发射线。您将获得更暗的天空背景，图像对比度更高，对星星的抑制也更强。L-Ultimate 在光晕性能方面也进行了优化，因此在对亮星物体进行拍摄时不会出现明显的光晕。

特征

Antlia 3nm Pro 超窄带 1.25 英寸滤光片组包括以下物品：

• Antlia 1.25 英寸 H-Alpha 3nm 滤镜
• Antlia 1.25 英寸 OIII 3nm 滤镜
• Antlia 1.25 英寸 SII 3nm 滤镜

Antlia SHO Pro 窄带滤光片将 FWHM（半峰全宽）优化至 3nm 带通。随着带宽变窄，3nm Pro 窄带滤光片通过降低不需要的背景信号来增强发射目标的对比度。Antlia SHO 3nm Pro 滤光片旨在在 671.6nm 线上提供 88% 的透射率，为您提供最大信号和清晰的星云结构。

传统的较宽窄带滤光片由于强烈的（中心波长 (CWL) 偏移）会导致严重的传输损失。我们保证在中心带宽 1nm 范围内 T>88%，这意味着 3nm Pro 窄带滤光片可以保证高透射率，适用于长焦比和快速光学系统。蓝移数据显示，Antlia 3nm Pro 滤光片几乎可以与所有速度高达 f/3 的系统一起使用，发射信号损失最小，并满足 Hyperstar 和 RASA 等快速光学器件的要求。

带外阻断规格为 OD5（0.001%），可提供出色的 SNR（信噪比）和有效截止率，以最大限度地减少来自其他波长的干扰。改进的锐利截止天文摄影 3nm Pro 滤镜旨在最大限度地减少明亮恒星周围的光晕。

用途与性能：

• 高透射率和最小带宽可最大程度地提高对比度
• 陡峭的光谱轮廓最大程度地减少了明亮恒星周围的光晕
• 单一基板可消除内部反射
• 窄带物体：发射星云、行星、沃尔夫-拉叶星云和超新星遗迹
• 在光污染区域和黑暗场所使用
• 月亮升起时延长成像时间
• Antlia 窄带 Pro 滤波器可用于 F/3 系统，信号损失轻微
• 所有 Antlia 窄带滤光片的边缘均经过涂黑处理，以消除杂散光的内部反射
• 卓越的光学可靠性减少了后期图像处理

TMB Pro Series Duo-Band Nebula Imaging Filter

The TMB Pro Series Duo-Band Nebula Imaging Filter is designed for astrophotographers using colour cameras who want to capture emission nebulae in stunning detail without investing in a full mono camera setup. This dual-band filter works by letting through only two specific colours of light, Hα (656 nm) and OIII (500 nm), which are the wavelengths most emitted by many nebulae. By blocking most other light, including light pollution and moonlight, it makes faint nebulae stand out more clearly in your images. It works especially well on well-known targets such as the Orion Nebula, Carina Nebula, Lagoon Nebula, and Trifid Nebula, but will also enhance contrast on virtually any emission nebula across the sky.

Ideal for One-Shot Colour (OSC) cameras, the filter provides an easy way to explore narrowband imaging while retaining natural colour. Its precision optical design features finely polished Schott glass, double-sided anti-reflection coatings, and a robust anodised aluminium cell, ensuring excellent light transmission, minimal reflections, and long-term durability.

Available in standard 1.25” and 2” sizes, the TMB Pro Series Duo-Band Filter is compatible with almost all standard colour cameras and filter wheels, making it a practical solution for deep sky imaging in urban or light-polluted environments.

Key Features:

• Dual bandpass for Hα (656 nm) and OIII (500 nm)

• Enhances contrast of emission nebulae

• Reduces interference from moonlight and artificial light pollution

• High-quality Schott glass with anti-reflection coatings

• Robust CNC-machined anodised aluminium cell with laser-engraved markings

• Standard 1.25” or 2” sizing for wide compatibility

Astronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectral window of each new Luminance filters is designed to tune your setup to get the sharpest image from any optical design and any camera.

The Luminance channel is probably the most important for a great final image! You want as much signal as possible so the filter should have the highest transmission possible with a wide spectral bandpass. This combination provides the greatest sensitivity and gives you the highest photon counts on your pixels. While the high transmission level is a great aspect of the new Astronomik Luminance filters, not all optical instruments or additional optical elements like correctors, field-flatteners or reducers, have perfect colour correction so it can be the width of the spectral band pass of  the Luminance filter that can cause problems. A band pass that is too wide will allow the transmission of incompletely focused light (Chromatic aberration), making stars appear soft or bloated. In such cases image processing can become difficult, so having a slightly narrowed spectral window in your Luminance filter can reduce or eliminate this damaging effect.

To give you all the tools to gather the best data possible we have expanded our line of Luminance filters: Now you can select a Luminance filter perfectly matched to the kind of telescope you use, to get the highest signal and sharpest image for the Luminance channel!
Depending on the color correction of your scope you may use a wider spectral window for the Luminance data. The L1 filter has the widest spectral window, the L2 is about the same as our current L-Filter and the L3 is much narrower.
If you use an optical system that is completely free of any chromatic aberration you should get an L1 filter for your setup. For general use the L2 filter is well suited to most optical systems with a corrector, flattener or reducer in the optical train while the L3 filter is designed for users of refractors with a less-than-perfect color correction and in combination with the new Deep-Sky RGB filters, the L3 filter will minimise the problem of bluish halos around stars.

The transmission curve characteristics and coatings on the new Luminance filters have been designed and engineered in such a way that no halos or reflections will be visible. Even with bright stars in the field of view you will be able to reveal the faintest structures in nebulas or galaxies.

Like all Astronomik Filters, the new Luminance filters are made using an extremely durable and scratch resistant coating, deposited on the finest polished optical substrate, which is free of any striae or internal strains. All substrates are made to exactly the same thickness, so all of our filters are parfocal.

Additional note for observers working under light polluted skies:
If your observing site suffers from light pollution you should try to use our CLS-CCD as a replacement for the Luminance filter. The transmission curve of the CLS-CCD will give you approximately the same amount of energy in all three colour channels while blocking nearly all unwanted artifical light pollution. Customers who replaced the Lx filter with the CLS-CCD are amazed by the increased quality of their data. This small change gives you the opportunity to take much deeper images from your current observing site.