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The primary function of the Baader Planetarium Semi-APO Filter 2" is to reduce the violet fringe that often affects the sharpness and contrast of images taken with achromatic refractor telescopes. It enhances the visual quality of the images by maintaining their natural color balance.
The combination of the Fringe Killer coating and the Moon & Skyglow Neodymium substrate in the Semi-APO Filter provides a performance similar to the Fringe Killer plus Moon & Skyglow combination but with a stronger violet cut. This results in high image quality with enhanced sharpness and contrast.
No, the Baader Planetarium Semi-APO Filter 2" provides a neutral view that maintains the natural color balance of the observed object. It also features RGB enhancement of the Neodymium substrate that boosts color contrasts, particularly for planets like Jupiter and Mars.
While the Baader Planetarium Semi-APO Filter 2" is designed for use with achromatic refractor telescopes, it can be used with a variety of telescopes to improve image quality and contrast.
The Baader Planetarium Semi-APO Filter 2" significantly improves the quality of astrophotography by reducing violet fringe, enhancing sharpness and contrast, and boosting color contrasts. It provides a neutral coloration that maintains the natural color balance of the observed object, resulting in high-quality, detailed, and vibrant celestial images.
Review Summary
2013-07-28T21:00:00
I got this to use with a short-tube achro refractor I use for wide-field astrophotography with either a stock Canon DSLR or a CCD astro camera. I've tried other filters (e.g. UV/IR cut) to reduce the purple fringing around bright stars, but none performed well. This Baader semi-APO does the job, almost eliminating the false color and purple halos around even the brighter stars. Short of getting a triplet apochromat you can't do better (and for a lot less money).
SERGIO C.
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2" / 50.8mm
4047825009333
Works better than expected!
By SERGIO C.
I got this to use with a short-tube achro refractor I use for wide-field astrophotography with either a stock Canon DSLR or a CCD astro camera. I've tried other filters (e.g. UV/IR cut) to reduce the purple fringing around bright stars, but none performed well. This Baader semi-APO does the job, almost eliminating the false color and purple halos around even the brighter stars. Short of getting a triplet apochromat you can't do better (and for a lot less money).
It's no secret that astrophotography enthusiasts and professional photographers alike seek the utmost clarity and contrast in their celestial captures. The Baader Planetarium Semi-APO Filter 2" is an innovative solution designed to enhance the visual quality of images taken with achromatic refractor telescopes. This high-quality filter effectively minimizes the distracting violet fringe that often diminishes the sharpness and contrast of astronomical images.
Crafted with a potent combination of a stronger Fringe Killer coating and the Moon & Skyglow Neodymium substrate, this filter offers a performance akin to the synergy of the Fringe Killer and Moon & Skyglow filters, but with an intensified violet cut. The result is a filter that not only provides a significant value but also delivers a neutral view that maintains the natural color balance of the observed object.
The Semi-APO Filter's high efficiency in fringe reduction is matched by its ability to remain inconspicuous in use. Its presence is virtually undetectable as it works to eradicate most of the violet aberration, leaving behind images that boast remarkable sharpness and enhanced contrast. Even users with smaller refractors will notice a substantial improvement in the aesthetic quality of their astrophotography.
Moreover, the filter's Neodymium substrate goes beyond mere fringe reduction. It actively boosts color contrasts, particularly when observing planets such as Jupiter and Mars, due to its RGB enhancement capabilities. This makes the Baader Semi-APO Filter 2" a versatile tool in the astrophotographer's kit, suitable for capturing a wide array of celestial phenomena with increased detail and vibrancy.
Durable and effective, the Baader Semi-APO Filter is a testament to Baader Planetarium's commitment to providing innovative optical solutions that cater to the discerning needs of astronomy enthusiasts. Whether you're capturing the grandeur of the night sky or honing in on planetary details, this filter is an indispensable asset for achieving high-contrast, sharp, and aesthetically pleasing astrophotography results.