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GSO Elliptical Secondary Mirror - 31mm For Sale


GSO Elliptical Secondary Mirror - 31mm
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GSO Elliptical Secondary Mirror - 31mm:
$41.00

GSO Elliptical Secondary Mirror - 31mm GSO Elliptical Secondary Mirror - 31mm

Description Ordering Info USA Shipping International Orders Returns Our eBay Store1. PRODUCT DESCRIPTION

For years, GSO has made dobsonian telescopes sold under various labels. Users of these scopes know the excellent quality of the optics included, and they have a well-deserved reputation for being the finest mirrors in their price range. We are now pleased to offer virtually the entire line of GSO\'s Newtonian optics in the US market.

GSO\'s elliptical flat mirrors have the same high quality as their parabolic primary mirrors. Made from optical grade BK-7 glass, all mirrors have a reflective aluminum coating with a reflectivity of approximately 92-93%. The aluminum coating is protected by a silicon oxide (SiO2) over-coating.

GSO uses high-volume, state-of-the-art, high quality manufacturing and test lines. GSO guarantees diffraction limited performance, but their secondary mirrors typically have a mirror surface quality of 1/12 wave RMS at least, and often better. This very smooth mirror surface results in excellent optical performance with practically no light scatter.

Besides elliptical secondary flats, we also offer matching GSO parabolic primary mirrors, mirror cells, and spiders (all sold separately).

Specifications of GSO Secondary MirrorsPart NumberMinor Axis DiameterApprox. Major Axis DiameterApprox. ThicknessMirror WeightAD04128mm38mm5mm0.3oz (9g)AD01231mm43mm8mm0.7oz (20g)AD06446.5mm65mm10mm2.1oz (60g)AD00750mm70mm10mm2.3oz (65g)AD04762.5mm88mm12mm4.5oz (128g)AD09168mm95mm15mm6.7oz (190g)AD00970mm97mm12mm5.5oz (156g)AD09274mm104mm16mm8.2oz (232g)AD09380mm114mm18mm11.5oz (326g)AD03788mm122mm20mm14.5oz (411g)AD018104mm145mm17mm18.2oz (515g)


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.

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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: We will send you a Delivery Confirmation number in the shipment notification email after your order ships. This is not detailed tracking, but it provides some very basic tracking info en route. Sometimes, the USPS neglects to update this info for a few days but your shipment is not affected.

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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.

Handling Fee: For all international orders, we charge an additional handling fee of 3% of the purchase price of the item(s). This will be added to your order total when you check out.

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: We must receive any returns within 14 days from the time you receive it. A minimum restocking fee of 10% will be levied for all returns and exchanges. A larger amount will be deducted if there is evidence of use or wear, dirt, scratches, missing packaging/parts, etc.Shipping fees are non-refundable (for items with free shipping, the outbound S&H cost we incur 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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