Baader AstroSolar Visual Solar Filter Film (ND 5) - 5" (127mm) Square Piece
Please Note: For safety reasons, we do not accept returns of Baader film. Please make sure that you order the right type and size for your needs.
Baader AstroSolar Safety Film - 5" x 5" (127mm x 127mm) square piece. Other film sizes referred to in the description below are all sold separately. A. Information About Our Pre-Cut Baader Solar Filter Film Pieces We offer Baader AstroSolar Safety Filter Film pieces in a visual optical density (OD) or neutral density (ND) of 5.0. This implies that the filter film will block 99.999% of the solar intensity; in other words, it has a transmission of 0.00001 or 0.01% only. This is suitable to make your own: Baader sells their AstroSolar Safety Film in just three sizes (A4 7.9x11.4" sheet, medium 19.7x39.4" roll, and extra large 46x46" roll). Since 2003, we have been providing amateur astronomers and photographers worldwide with Baader film in many sizes and at excellent prices. Besides the original A4 sheet and medium roll, we also offer Baader film in smaller 1.5", 2", 2.5", 3", 4", 5", 6", 7" and 8" square pieces. B. Baader AstroSolar Safety Film - Brief Overview The views through AstroSolar Film display fine solar details, including fine penumbral detail in sunspots, solar granulation, and lighter colored faculae. The solar disk is set against a dark background, free of the haze and scatter that is common in typical 'mylar' films or inexpensive glass filters. The performance of AstroSolar is even more remarkable when considering its very low cost. When combined with Baader's tips for a simple do-it-yourself filter mount (see below), anyone can construct a complete low cost, high quality, white light solar filter for any telescope, binoculars, or camera lenses. What is even more important - with AstroSolar Film the Sun appears in its real color - neutral white (with only a slight bluish tint). Other films and glass filters produce a blurry bluish or reddish/orange/yellow solar image, thereby cutting part of the spectrum. Especially with an orange sun, it is very hard to see faculae regions which are visible predominantly in the blue portion of the light spectrum. Due to its neutral color balance, AstroSolar Film can be used with various other color (or interference) filters which allows the observer to concentrate on certain spectral passbands for investigations of different layers within the solar "atmosphere." It is also possible to further improve the stability and sharpness of the solar image through the use of the Baader Solar Continuum Filter (sold separately). Views of granulation and faculae are particularly enhanced through the use of this continuum filter, in combination with AstroSolar film. Users of achromatic refractors will be particularly pleased with the performance using this additional filter. Please note that you cannot see solar prominences with white light solar filter film such as this - that requires the use of sophisticated and significantly more expensive narrowband solar filters or specialized solar telescopes. C. Making Your Own Solar Filter You can construct a full aperture filter or a smaller off-axis filter for your telescope. In most cases, an unobstructed filter size of 3-4 inches in diameter should be sufficient. Make a larger or full aperture filter if you have a long focal length telescope and/or plan to observe with high magnifications which dims the image. Larger filters also provide higher contrast, higher resolution (since you are using a larger aperture, the theoretical resolving power is higher), and are more comfortable to use (since you get a larger exit pupil) when the conditions are good. On the flip side, a smaller aperture provides steadier images when seeing conditions are turbulent, which is most often the case in most places. D. Appearance of Baader AstroSolar Film E. Eye Safety F. Technical Specifications (Source: "Baader AstroSolar Safety Film" and "Original Baader AstroSolar Safety Film" information sheets, distributed by Baader Planetarium Astronomical Instruments, Germany) G. Cleaning AstroSolar Film Since your AstroSolar filter will be open to dirt and dust, the coating may require cleaning after extended exposure. If the dust is loose, you may be able to blow it off with compressed air or an airbulb, both available in camera stores. Since the coating is harder than regular aluminum coatings applied on mirror surfaces, it can be cleaned with a solution of dishwater detergent and distilled water. Obtain sterilized cotton wool (as used for eye application), available in pharmacies. Normal cotton wool as used for cosmetic purposes should NOT be used! Use careful, gentle strokes. For each stroke, a new portion of cotton should be used, soaked with the cleaning solution. This helps to avoid scratches in the metal surface due to dust grains picked up by the cotton. Check the cleaning result by holding the cleaned filter up to the Sun. If scratches or pinholes show up, exceeding a combined uncoated area of 10 square mm, the film is regarded as unsafe and must be destroyed. Tiny pinholes can be covered with a black felt-tip marker. If the filter becomes very dirty, we encourage you to replace it, rather than risk damage in the cleaning process.
Note: Occasionally, the product you receive might have a slightly different cosmetic appearance or labeling than what is shown. This can often change from batch to batch according to the whims of the manufacturer. However, you will always receive a brand new, original product as described above. Description copyright: Agena AstroProducts - Reproduction without permission prohibited. Payment: We only accept Paypal and major credit cards through Paypal. Shipping Method: United States Postal Service (USPS), unless otherwise specified. Checkout: Please pay for the item(s) within 3 days from your account on eBay or by using the link in the email you receive from eBay. Shipping Discount: We offer shipping discounts if you order multiple quantities/items. eBay will automatically show you the correct, discounted shipping costs when you check-out. Combining Purchases: You can combine shipping for items purchased from us on eBay within 3 days. Buy the items individually, and check out together for all items. eBay will combine the shipping weights and show you the discounted shipping cost. You must check out for all items together via eBay for this. We cannot combine shipping costs after you check out individually for your purchases. Sales Tax: 8.5% sales tax added if your Ship-To address is in California. Delivery Time: Most orders ship within 1 business day of receiving payment. First Class shipments will take 3-5 days to arrive after we ship it. Priority Mail shipments will take 2-3 days. However, these delivery times are NOT guaranteed by the USPS. Delays of up to 2 weeks can occur in about 5% of the shipments. Tracking/Delivery Confirmation: eBay will update you once your order ships. You can see the order status or tracking information from your eBay account at any time. Shipping Cost: Click on the "Shipping and Payments" tab above and select your country to see your shipping choices and cost. If you need a shipping cost estimate for multiple items, please contact us. Delivery Time: 1) USPS First Class International: Delivery takes about 3-4 weeks after we ship your package. This can frequently take 4-6 weeks or more for several countries (8 weeks for Italy, Argentina, and South Africa; 8-12 weeks for Brazil). THERE IS NO TRACKING FOR FIRST CLASS SHIPMENTS. The information shown in your eBay account is just a customs form number - it is NOT a tracking number as incorrectly indicated by eBay. Once your package ships, we can do nothing but wait until your package arrives. Please do not become impatient and contact us in 2-3 weeks if your package has not arrived. If you don't receive the package in 6 weeks, contact us and we will work with you to resolve the issue. If you don't want to take the risk of this delay, then DO NOT USE First Class mail - use Priority or Express shipping instead. (2) USPS Priority Mail International: Delivery takes 1 - 2 weeks after we ship your package. This can sometimes take 3-4 weeks to several countries. The USPS provides some basic tracking information for Priority shipping. (3) USPS Express Mail International: Delivery usually takes 5-10 business days after we ship your package. You will receive a tracking number with which you can track your shipment from USPS.com. Note: If you use this option, you must send us your phone number when you check-out or else your shipment will be delayed. This is required for international postal forms. Again, these delivery times are NOT guaranteed by the US Postal Service. The most common reason for delays is slow customs inspection and clearance in your country, and can be very long, even for Express mail packages. Upon shipping your order, delivery delays are beyond our control, so do not leave us negative feedback or file a Paypal claim if your package is delayed. Delays are quite common but losses are very rare, so your patience/cooperation will be greatly appreciated. Customs and Duties: You are responsible for any duties and taxes that may be levied in your country. These are not included in the item price or shipping cost. We have no control over these charges and cannot predict what they may be or if they will be levied upon delivery. Customs policies vary widely from country to country (Some countries such as UK are strict about imposing hefty customs duties). It is your responsibility to check with your country's customs office to determine what these additional costs will be prior to bidding or buying. Customs fees are normally charged by the delivery company or your country's postal service, or collected when you pick the item up. These fees are NOT additional shipping charges. US Orders: Returns must be shipped back within 30 days. All returned items must be in brand new, resalable condition with original manufacturer’s packaging. A minimum restocking fee of 10% will be deducted if there is any evidence of use or wear, dirt, scratches, missing packaging/parts, etc. We may levy a larger restocking fee if the condition warrants it, or even refuse returns entirely if returned in heavily used/abused condition. Shipping fees are non-refundable (for items with free or discounted fixed shipping, the actual outbound S&H cost we incurred will be deducted) and you are responsible for all return shipping costs. Please contact us first before returning an item. International Orders: No returns/exchanges accepted unless the item we shipped is defective. Please research the product and ask us any questions BEFORE you purchase to make sure you are buying the correct item for your needs.
| ||||||||||||||||
