Baader Double Stacked Solar Continuum Filter - 1.25" # FSOL-1D 2458392

Description

Baader Double Stacked Solar Continuum Filter - 1.25" # FSOL-1D 2458392
Description
Ordering Info
USA Shipping
International Orders
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1. PRODUCT DESCRIPTION
Please Note:
Becuase of the inclusion of the Baader astrosolar film with this filter, we do not accept any returns/exchanges for this item once it has been opened. All sales are final.
Double stacked to significantly enhance the visibility of solar granulation and sunspot details
Boosts contrast and reduces the effects of atmospheric turbulence
Transmits the green wavelengths of light centered around 535 nanometers (nm)
Eliminates chromatic aberration seen through achromatic telescopes
Baader’s sophisticated manufacturing processes ensure that the quality of each filter is the highest in the industry
Please Note:
For safe use, the Solar Continuum filter must be used in conjunction with a primary white-light broadband solar filter (ie, Herschel Wedge Prism, or Baader AstroSolar Film).  It must be placed
after
the primary filter, and cannot be used alone, or permanent eye and equipment damage will result.
The double stacked version of the Baader Planetarium Solar Continuum filter is designed to enhance the visibility of solar granulation and sunspot details. It consists of two 1.25" standard Baader Solar Continuum filters that are slightly tilted against each other and held in a special cell. This double stacking significantly boosts contrast and reduces the effects of atmospheric turbulence (seeing). The filter transmits only a specific spectral wavelength centered at approximately 535nm without emission and absorption lines. With the filter attached to a 1.25” eyepiece or camera nosepiece, images snap into focus and granulation becomes regularly visible. Details at the limit of visibility become easier to hold and image motion caused by atmospheric turbulence is reduced.
The Solar Continuum filter works well for both visual and imaging with all types of telescopes. Users of SCTs and achromatic refractors will find it particularly beneficial, as it completely excludes the red and blue wavelengths, and centers on the peak visual wavelengths where the telescope optics are sharpest and free from chromatic aberrations. For imaging, we also recommend the Continuum filter be combined with a UV/IR Cut filter to eliminate the far infrared wavelengths that can cause parts of the image to appear out of focus. A 200mm x 290mm (8x11inch) sheet of Baader's renowned AstroSolar Photo Film (ND=3.8) is provided with each Solar Continuum filter. This material may be easily mounted to any telescope using provided instructions.
The Solar Continuum filter can also be used to test the quality of telescope optics using a bright star. Its narrow bandpass and complete blockage of longer and shorter wavelengths make it superior to standard green colored filters for testing refractors at their center design wavelength - the peak visual wavelength. Accurate evaluation of optical quality for a telescope can be made without the effects of spherochromatism (chromatic spherical aberration) also known as secondary color error. Star testing through the Solar Continuum filter will require a bright test star due to the limited amount of light allowed through the double stacked configuration and also due to the narrow 10nm bandpass.
As with all Baader Planetarium filters, the Solar Continuum possesses all of the trademark Baader filter qualities. Optical, physical, and mechanical qualities are superb.
Manufacturer part numbers: FSOL-1D or 2458392.
Agena Notes:
Please note that this filter does not feature a female thread. Hence, you cannot stack additional 1.25" filters on to this item.
Not meant for use with H-alpha or other ultra-narrowband dedicated solar telescopes.
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.
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2. ORDERING INFORMATION
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.
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3. US SHIPPING
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.
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4. INTERNATIONAL ORDERING / SHIPPING
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.
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5. RETURN/EXCHANGE POLICY
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.
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