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Baader Narrowband H-Alpha (7nm) CCD Filter - 1.25" # FHALN-1 2458382
| Brand | Baader Planetarium |
| Part Number | 2458382 |
| Availability | available |
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Product Info
Manufacturer Description
CCD imagers will find Baader's Premium Narrowband CCD passfilters to deliver the absolute highest contrast deep sky images in H-Alpha, H-Beta, Oxygen III, and Sulfur-II, with the shortest exposures possible. Their ultra-narrow bandwidths have extremely high transmissions, while completely rejecting light pollution as well as the important blocking of longer wavelengths.
The high optical quality of the Baader narrowband filters guarantees no loss in sharpness or contrast. Each substrate is fine-optically polished plane parallel to deliver a smooth and accurate 1/4 wavefront over the entire surface. This special custom polishing operation sets Baader filters apart from the standard commercially precision polished filter substrates used by most other filter manufacturers.
In addition to their transmission properties, the Baader coatings were developed with another key goal in mind - eliminate the annoying reflections present in other narrowband astro-filters. To achieve this freedom from reflections, along with excellent out of band blocking, required careful design and testing of the coating stacks.
Coatings are professionally applied in Germany by the most sophisticated equipment available today, ensuring high consistency for bandpass centering, transmission, and out of band blocking. The anti-reflection coatings are designed to prevent halos and balanced to prevent physical deformation of the optically flat substrates. The ultra-hard ionbeam deposition ensures the coatings will never degrade from use or normal cleaning. Each filter is coated individually, permanently sealing the coating edges, in order to guarantee lifetime coating durability and uniformity. Baader mil-spec coatings won't degrade, peel or flake off, unlike the coatings of filters that have been simply cut out of pre-coated sheets of glass. This cutting operation leaves the coating edges rough and torn which enables penetration of moisture between the coatings and substrate.
Agena Note: Please note that this filter does not feature a female thread. Hence, you cannot stack additional 1.25" filters on to this item.
Reviews
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Sep 6, 2014
Really good for white light solar
Pros:Accurate
Cons: Comments:With Lunt solar wedge it dims the sun just right, didn't need to mess with variable polarizer.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Feb 7, 2014As expected
Pros:Strong Construction,No Reflection,Easy to Use,Quality Lenses
Cons:Doesn't Come In 3 And 5nm
Comments:Baadar makes a great product for the price. This one performs well without any reflections. I only wish they also made a 3 and 5nm versions.
Bottom Line: Would you recommend this item? NoThis review was provided courtesy of AgenaAstro.com
Jesús Muñoz New Member
- Skill Level
- Unknown
- Time with Product
- Unknown
- User Notes:
- Review by Powerstar of Queretaro, Mexico.
Jan 8, 2013Great H-alpha filter
Pros:Excelent Value,High quality,Great optics
Cons: Comments:What a great filter! The structure of the nebulas was easily captured with not so long exposures. The quality of the stars was also very good... and its price is atractive.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Sep 24, 2012Baader Filters Are Excellent Quality.
Pros:Well Made,Quality Materials
Cons: Comments:There are many choices when it comes to astronomical accessories. Baader quality for the price has led me to build my 1.25" and 2" filter collection almost completely with their products. There are very few manufacturers of astronomical filters for the advanced amateur and pro who can compare to Baader.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Oct 28, 2011Great Product
Pros:Easy to Use,Quality Lenses
Cons: Comments:Used this filter to capture HA on a few different Nebulae with great results. Had to image a little longer tnan I was anticipating but the results were great.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
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