If you buy after clicking affiliate links on this site we might receive a commission from companies such as eBay, Amazon etc This does not affect the price you pay.
If you buy after clicking affiliate links on this site we might receive a commission from companies such as eBay, Amazon etc This does not affect the price you pay.
Click here for more information and to buy from eBay.
H-Alpha 7nm CCD Narrowband-FilterCCD imagers will find that Baader’s new Narrowband 7nm H-Alpha pass filter delivers the absolute highest contrast deep sky images of H-II regions, all with the shortest exposures possible. Its narrow 7nm FWHM bandwidth has a transmission at H-Alpha of over 90%, while completely rejecting light pollution.The high optical quality of the Baader 7nm H-Alpha filter 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 precision polished filter substrates used by most other filter manufacturers. Coatings are professionally applied by the most sophisticated equipment available, ensuring high consistency for bandpass centering and transmission. The ultra-hard ionbeam deposition ensures the coatings will never degrade from use or normal cleaning.Baader Planetarium H-Alpha 7nm Narrowband Filter Features:True Optical Quality: Baader glass substrates are of true optical quality. Most other filters are merely made from raw flame-polished, “optically flat”, or sometimes a top quality commercially polished filter glass (fine for camera filters), resulting in wavefront deformations that damage image sharpness and contrast when used with telescopes. Baader Planetarium filters are made from striae-free substrates, and actually fine optically polished flat to within 1/4 wave p-v over the entire surface, plane parallel to within 30 seconds of arc! This important and unique custom step adds cost – but the result is a filter that maintains the full wavefront quality of the telescope without double images or ghosting, even at high magnifications. Critical to maintaining this level of flatness are Baader’s carefully balanced coating designs, which prevent coating surface stresses from warping the substrate. Such high flatness enables Baader filters to be used far in front of the focal plane, ahead of star diagonals and digital cameras. They are particularly well suited for attachment to the nosepiece of the Maxbright Binocular Viewer (other manufacturer’s filters must be used in pairs, attached to the eyepieces).Filter Durability: Filter durability has always been a hallmark of Baader Planetarium. The multi-layer dielectric coatings are plasma-assisted and Ionbeam-hardened using the latest technology (the coatings are harder than the glass substrate itself!). Baader filters withstand repeated real-world exposure to the elements and physical cleaning. Users need not leave their precious filters dull and dust encrusted to avoid cleaning – Baader filters may be used and cleaned without fear. We have heard sad stories from owners of other simpler soft-coated dielectric filters, who have seen their coatings degrade from normal exposure to moisture, or wiped away from routine cleaning. Some manufacturers even resort to sandwiching their delicate coatings in between two layers of glass (and risking blurred double images as well as eventual degradation from the edges inward). Baader Filters will truly last a lifetime.Stackability: Unlike other filters, Baader Planetarium filters are truly designed to be stacked and combined. This is possible due to the high optical quality and highly efficient anti-reflection multicoatings. The ability to combine filters opens up many exciting possibilities, permitting unique spectral characteristics unachievable with any single filter.Special Filter Cell: Baader’s special filter cell design offers unique features that enhance their reliability and usability. Though difficult to produce, the ultra-thin filter cell results in the maximum possible clear aperture, in order to minimize vignetting (1.25″ Filter clear aperture is 27mm, 2″ Filter aperture is 45mm). The special threading has been designed to fit a wide variety of eyepieces and accessories (there is significant variation between the 1.25″ filter threading used by eyepiece and accessory manufacturers). The front ‘crown’ of the filter incorporates milled notches which make handling and threading the filter a more secure operation in the dark.Low cost: Despite high quality and advanced technology, Baader Planetarium filters are affordable.
Category: Cameras and Photography:Telescopes and Binoculars:Telescopes
Location: Ormskirk,, Lancashire
If you buy after clicking affiliate links on this site we might receive a commission from companies such as eBay, Amazon etc This does not affect the price you pay.
Click here for more information and to buy from eBay.
See below for similar items.
Items 7 to 12 of 120
Alpha-H: Alpha-H Clear Skin Tonic 100ml
£42.99 from Beauty Expert UK
Formulated with oily and blemish-prone skin types in mind, the Alpha-H Clear Skin Tonic is a pH-optimised toner that wor…more
Alpha-H: Alpha-H Golden Haze Face Oil 25ml
£42.99 from Beauty Expert UK
Adopt a new glazed-skin routine with the Alpha-H Golden Haze Face Oil. Rich in omega fatty acids, the luxurious oil is b…more
Alpha-H: Alpha-H Beauty Sleep Power Peel 50ml
£69.99 from Beauty Expert UK
The Alpha-H Beauty Sleep Power Peel works to refine and firm the skin whilst you sleep. Infused with 0.5% retinol and 1…more
Alpha-H: Alpha-H Daily Essential Moisturiser SPF50+ 50ml
£35 from Beauty Expert UK
Seeking to hydrate the complexion and protect against everyday environmental stressors, the Alpha-H Daily Essential Mois…more
Alpha-H: Alpha-H Essential Hydration Cream 50ml
£44 from Beauty Expert UK
Combining bio-active sea minerals and fatty acids, the day cream seeks to reduce the appearance of fine lines and rehydr…more
Alpha-H: Alpha-H Liquid Gold Rose 100ml
£37 from Beauty Expert UK
Performing as a toner, exfoliator, serum and moisturiser, the Liquid Gold Rose is the ultimate addition to your skincare…more
Items 7 to 12 of 120