
( Brand: A-alstar ), ( Manufacturer Part Number: SKU-AM-HF112A ), ( Part Type: Filter )
The HF112A Alstar 1.25" Narrowband NBPF Hydrogen-Alpha 12nm Filter is an essential tool for astronomers and astrophotographers seeking to enhance the contrast and detail in their hydrogen alpha images. This filter is specifically designed to block out all wavelengths of light except for the hydrogen alpha line, resulting in a higher signal-to-noise ratio and improved contrast.
The filter has a narrow bandwidth of only 12nm, which means it only allows a very specific range of light to pass through. This results in a much sharper and more detailed image, as it reduces the amount of unwanted light that can interfere with the signal. The HF112A also has a high transmission efficiency of up to 80%, which means more light is able to reach your imaging sensor, resulting in brighter and more detailed images.
The HF112A is made from high-quality optical glass and is coated with a multi-layer dielectric coating to ensure maximum light transmission and minimal reflection. It is also fully multi-coated to reduce ghosting and increase image sharpness. The filter is threaded with a 1.25" diameter, making it compatible with most telescopes and imaging equipment.
Overall, the HF112A Alstar 1.25" Narrowband NBPF Hydrogen-Alpha 12nm Filter is a powerful tool for any astronomer or astrophotographer looking to capture stunning hydrogen alpha images. Its narrow bandwidth, high transmission efficiency, and high-quality materials make it an ideal choice for those seeking the best possible contrast and detail in their images.
Pros of buying a HF112A Alstar 1.25" Narrowband NBPF Hydrogen-alpha 12nm filter:1. Improved Contrast: The filter is designed to enhance contrast, making it easier to see detailed features in solar prominences and flares.
2. Narrowband Filter: The 12nm bandwidth of the filter reduces light pollution and increases the signal-to-noise ratio, making observations more clear.
3. Compatibility: The filter is compatible with many telescopes and cameras, making it a versatile investment.
4. High Quality: Alstar filters are known for their high quality and durability.
Cons of buying a HF112A Alstar 1.25" Narrowband NBPF Hydrogen-alpha 12nm filter:1. Cost: Compared to broadband filters, narrowband filters like this one can be more expensive.
2. Limited Use: The filter is specifically designed for observing hydrogen-alpha emissions, which means it may not be as useful for observing other types of objects.
3. Requires a Specific Setup: Narrowband filters require a specific setup, including a narrowband camera and a solar filter, which can add to the overall cost.
Conclusion:The HF112A Alstar 1.25" Narrowband NBPF Hydrogen-alpha 12nm filter is a high-quality investment for serious solar observers. It offers improved contrast and reduced light pollution, making it easier to see detailed features in solar prominences and flares. However, it is a more expensive investment compared to broadband filters and is designed for specific use. If you are a serious solar observer and have the necessary setup, this filter is a great investment. If you are just starting out in solar observing, you may want to consider a more affordable broadband filter until you have a better understanding of your needs.
under a light-polluted night sky can be difficult. The solution is an h-alpha filter. The Alstar h-alpha cut-off filter enhances contrast between object and sky, allowing you to take good quality images even under urban skies. 25 narrowband nbpf hydrogen-a 12nm filter.
The Alstar h-alpha cut-off filter works to out a large part of this light pollution. 25-inch barrel of your telescope eyepiece.
Young stars embedded in the bright red of a nebula - an h-alpha filter is expert if you want to capture hydrogen nebulae all their glory.
This convenient filter only allows wave lengths above 660nm through, which means it blocks a large part of the scattered light and also from artificial mercury sodium-vapour lamps. That means the filter also blocks infamous stray light and from mercury sodium vapour lamps. Metal filter cell threads directly into the narrowband nbpf hydrogen-a 12nm - enhances contrast between object and sky allows you to take images even under urban skies Alstar 1.
under a light-polluted night sky can be difficult. Mounted in a nicely anodized housing.
Young stars embedded in the bright red of a nebula - an h-alpha filter is expert if you want to capture hydrogen nebulae all their glory.
With a band pass of 12nm, only light above 660nm is allowed into your camera - whether under dark skies or the sky glow city. The Alstar h-alpha cut-off filter enhances contrast between object and sky, allowing you to take good quality images even under urban skies.