Explore Scientific 28x100mm BT-100 SF Large Binoculars with 62 Degree LER Eyepieces
Ships To: United States & Canada 🇺🇸 🇨🇦
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✓ Questions? Call Us 1-800-860-3429
Ships In: 1-3 Business Days
Estimated Delivery Time: 3-7 Business Days
Shipping & Returns
Note: Due to certain shipping restrictions, some of the brands/products that we carry cannot be shipped to all of the countries that we sell to. You can view all shipping restrictions here.
Shipping to the UNITED STATES (Lower 48 States):
We offer Free U.S. Shipping on most orders over $100 USD. Some limitations may apply.
Shipping to CANADA:
We currently offer Free Canadian Shipping on most orders over $100 USD. Some limitations may apply.
After your order is placed, you will receive an order confirmation email, which will contain your Order #. After your payment is processed, your order will typically ship within the next 1-3 business days (excluding Holidays) for US orders & Canadian orders.
If you did not receive an order confirmation email, please be sure to check your spam folder. If you still can't find any emails from us, please reach out to our support team at firstname.lastname@example.org.
Orders will typically ship with either FedEx or UPS Ground. Additionally, most high-value shipments will require a signature upon delivery.
Shipping Transit Time:
Shipping times can vary depending on the product that you purchase. In most cases, you will receive your product(s) in around 3-5 business days after it has been shipped - for US orders, and 5-10 business days - for Canadian orders.
Faster Shipping Requests:
If you would like to request a faster shipping method that is not available as an option on our online checkout, please reach out to us at email@example.com, and we can provide a quote.
After your order has been shipped to the final destination, regular tracking updates will be sent to the email address that was used to place the order.
After you receive your Tracking #, it may take up to 24-48 hrs for the Carrier to display Tracking updates.
Order & Pre-Order Cancellation Requests:
Any orders and/or pre-orders that haven't shipped yet, but that are cancelled & refunded by request of the customer, may be subject to a minimum 5% re-stocking fee. The re-stocking fee will be deducted from your refund.
If the order has already shipped, then please refer to our Returns & Refund Policy below for full details.
If you purchase a product from us with a Custom Engraving option selected (such as text engraving or artwork engraving, we will reach out to you right after your order is placed to request your engraving instructions.
If we do not receive your engraving instructions within 2 business days after we request them, we will proceed with shipping your order without engraving. If you receive your order, and decide that you would like engraving, you will be responsible for shipping the product back to our facility in order to have the engraving completed.
Returns & Refund Policy
We believe in the brands that we work with and the products that we sell. And we want YOU to be 100% satisfied! This is why we offer 30 Day Returns for the vast majority of the Brands/Products that we carry. See below for details regarding products that do NOT qualify for our 30 Day Return Policy.
Processing Returns (IMPORTANT):
To initiate a return, you MUST obtain an RMA number and the correct return address from us (we will provide both of these). Any returned shipments that do not contain a valid RMA number will not be accepted. NOTE: Items must be returned in their original packaging and condition.
To retrieve an RMA number, or for more details, please contact us at firstname.lastname@example.org!
If you would like to return your purchase for any reason within 30 days of receiving the product(s), we can only grant a refund if the items are returned in their original packaging and condition. To confirm that products are in their original packaging and condition, we may ask you (the customer) to provide photographs of the items before they are returned to us.
Refunds will be issued after the warehouse receives, inspects and processes your return (this may take upwards of 5-7 business days).
The customer will be responsible for covering both the return shipping costs, as well as the shipping costs associated with originally shipping the item(s) to them (the customer). Additionally, a minimum 5% re-stocking fee will apply. These fees will be deducted from the customers' refund.
Liability for Return Shipments:
It is the responsibility of the customer to ensure that any return packages are returned to us safely and securely. Given this, in cases where the customer returns the item(s) using a shipping service of their choice, we recommend that a fully tracked service is selected for any return shipments, and that return shipments are tendered to an official Shipping Carrier distribution centre (UPS, FedEx etc) - and not a 3rd party shipping/distribution centre.
Red Carpet Telescopes will not be liable for any items that are lost, stolen, and/or damaged in transit during return shipping. These issues will need to be dealt with directly with the Carrier.
If you wish to exchange the item for another product within 30 days of receiving it, we can likely wave any re-stocking fees (depending on the condition of the product), and we can help reduce or wave any return shipping fees. However, in some cases, these fees may still apply. Please email us for full details at email@example.com.
When you receive your package(s), you should immediately inspect both the packaging and the product(s) to ensure that nothing is damaged or that your shipment isn't missing anything (additional products or accessories).
If you notice any damage to your product(s) upon delivery - please send photos to firstname.lastname@example.org as soon as possible and we will make the arrangements necessary to have your product returned, and have a replacement shipped to you. If possible, your product(s) will need to be returned in all of its original packaging.
If you notice that the packaging of your shipment is damaged, please do NOT throw the packaging away. Please take pictures of the packaging, and send it to email@example.com.
Brands/Products that do NOT qualify for our 30 Day Return Policy:Full Moon Optics
Full Moon Optics products do not qualify for our 30 day return policy. However, they instead qualify for a 14 day return policy.
APM products do not qualify for our 30 day return policy. However, they are covered by APM's 2 year limited warranty.
Athlon Optics (United States only)
Athlon Optics products purchased in the United States do not qualify for our 30 day return policy. However, if a product has a manufacturing defect or is damaged, we can have the product returned, repaired, and shipped back to you (alternatively, we can have an entirely new replacement product shipped to you) - as per Athlon's Lifetime Warranty.
Athlon Optics (Canada only)
Athlon Optics products purchased in the Canada do not qualify for our 30 day return policy. Instead, they qualify for 7-day returns (from the day of delivery). Return requests must be made within 5-days (from the day of delivery). However, if a product has a manufacturing defect or is damaged, we can have the product returned, repaired, and shipped back to you (alternatively, we can have an entirely new replacement product shipped to you) - as per Athlon's Lifetime Warranty.
Hampton NauticalHampton Nautical products do not qualify for our 30 day return policy. Instead, they qualify for 5-day returns (from the day of delivery). Return requests must be made within 5-days (from the day of delivery). Furthermore, if a product is damaged, we must be notified within 5 days (from the day delivery). Once we are notified of any damage, arrangements will be made to either return and repair your product, or ship you a brand new one.
Leupold (Canada only)
Leupold products do not qualify for our 30 day return policy. However, if a product has a manufacturing defect or is damaged, we can have the product returned, repaired, and shipped back to you (alternatively, we can have an entirely new replacement product shipped to you) - as per Leupold's Lifetime Warranty.
Luna Optics products do not qualify for our 30 day return policy. However, if a product has a manufacturing defect or is damaged, we can have the product returned, repaired, and shipped back to you, or we can have a new unit shipped to you - as per Luna's 1 year Warranty.
Konus products do not qualify for our 30 day return policy. However, most of the Konus products that we carry include either a 2-year warranty, or lifetime warranty.
First Texas Products (Night Owl Optics / Bounty Hunter / Teknetics / Fisher Lab)
First Texas Products (Night Owl Optics / Bounty Hunter / Teknetics / Fisher Lab) do not qualify for our 30 day return policy. However, most Night Owl Optics, Bounty Hunter, Teknetics, and Fisher Lab products carry a minimum 1 year warranty (with some products carrying a 5 year warranty).
Newcon Optik products do not qualify for our 30 day return policy. However, all Newcon products carry a comprehensive 1 year warranty.
Refurbished products do not qualify for our 30 day return policy. All sales are final.
Additionally, items that are special ordered, customized, or engraved - cannot be returned or refunded under our 30 day return policy.
If your engraved item needs to be repaired within 30 days of purchase, please reach out to us and we will have the product repaired or replaced, re-engrave if necessary, and return it to you in mint condition!
If you have any questions regarding our Returns & Refund Policy, please feel free to reach out to us at firstname.lastname@example.org.
Due to certain shipping restrictions, some of the brands/products that we carry cannot be shipped to all of the countries & territories that we sell to.
If you reside in a country that we cannot ship a specific brand/product to, feel free to reach out to us at email@example.com, and we can explore any potential solutions.
Please see below the list of brands/products that have certain shipping restrictions:
Currently, we can only ship APM products to addresses within the United States.
We can ship most Barska products to addresses in the United States & Canada. However, due to import restrictions, we cannot ship Barska Riflescopes to Canada at this time.
GPO (German Precision Optics) -Riflescopes
We can ship most GPO products to addresses in the United States & Canada. However, due to import restrictions, we cannot ship GPO Riflescopes to Canada at this time.
Currently, we can only ship Garrett products to addresses within Canada.
Currently, we can only ship Luna Optics products to addresses within the United States.
Currently, we can only ship Leupold Optics products to addresses within Canada.
Currently, we can only ship Levenhuk products to addresses within the European Union (EU).
Currently, we can only ship XP products to addresses within Canada.
If you encounter a Warranty issue with any products that you have purchased from us, we will gladly serve as the liaison between you and the Manufacturer. This will ensure that you receive the best, and most attentive, service possible.
Please don't hesitate to reach out to us with any questions that you may have regarding Warranty. You can reach out to us via email, live chat, or give us a call during our posted hours at 1-800-860-3429.
OUR PRODUCTS INCLUDE THE FOLLOWING WARRANTY:
Your product is not only warranted to be free of defects in materials and workmanship for the lifetime of the product. Athlon will also repair or replace, at no charge to you, your product if it becomes damaged through normal use. No receipt needed, no registration required. This is a commitment that Athlon will be the best product you can buy for your money.
APM products are covered by a 2-year limited warranty.
Barska being the manufacturer outlet honors Manufacturer warranties for Repair and/or new Replacement after the 30 day Standard Return Policy is expired. Please read the Warranty Card enclosed with product for details.
NOTE: Refurbished products do not qualify for Barska's warranty policy or 30 day return policy.
Binoculars – No-Fault Warranty
Binoculars – (Battery operated) One-Year Limited Warranty
Magnifiers – Limited Lifetime Warranty
Telescopes – One-Year Limited Warranty
EXPLORE SCIENTIFIC / EXPLORE FIRSTLIGHT / BRESSER / ALPEN OPTICS / NATIONAL GEOGRAPHIC / VIXEN:
Telescopes: *Limited* USA One Year Warranty once registered within 60 days
Microscopes: *Limited* USA One Year Warranty once registered within 60 days
Riflescopes: *Limited* USA Five Year Warranty once registered within 60 days
Waterproof Riflescopes: *Limited* Lifetime USA Warranty if registered within 60 days
Binoculars & Spotting Scopes: *Limited* USA Five Year Warranty once registered within 60 days
Waterproof Binoculars & Spotting Scopes: *Limited* Lifetime USA Warranty if registered within 60 days
Laser Rangefinders, Cameras and Electronics: *Limited* USA One Year Warranty once registered within 60 days
FULL MOON OPTICS:
Full Moon Optics products carry a limited 3 year warranty on all parts except the thermal core (thermal core include a 1 year warranty).
BOUNTY HUNTER / TEKNETICS / FISHER LABS / NIGHT OWL OPTICS:
Bounty Hunter, Teknetics, and Night Owl Optics products are covered by a minimum 1 year warranty. Some Metal Detectors are covered by a 5 year warranty.
GERMAN PRECISION OPTICS (GPO):
GPO, USA is 100% confident that all our product will not only function perfectly, but will exceed your expectations. Therefore, GPO, USA has created an industry leading Spectacular Lifetime Warranty™. With outstanding professional service, we will take of our products before, during and after your purchase at no charge to you, EVER. If your product is not functioning properly, GPO, USA will repair or replace it with a product in perfect working condition.* We at GPO know that you have chosen to trust us by purchasing one of our premium products and we understand that this trust is important. The GPO, USA Spectacular Lifetime Warranty™ applies to every GPO product bought in the United States, no matter where you purchased it, no matter how long you have had it. In addition to this “best in class” service, GPO trusts our retail partners to also service your needs. If you prefer to return a damaged or non-functioning GPO product to the retailer where you have purchased your optic, GPO authorizes the retailer to replace your item “on the spot”. This level of service is unsurpassed in the industry. Trust in GPO. You will not be disappointed.
All Newcon Optik products carry a comprehensive 1 year warranty.
Built for a lifetime of performance - if at any time your Leupold product doesn’t perform, Leupold will repair or replace it for free - whether you're the original owner or not. You don’t need proof of ownership or a warranty card, and there’s no time limit.
All Luna Optics products carry a limited 1 year warranty.
All Levenhuk Telescopes, Microscopes, Binoculars and other optical products, except for accessories, carry a Lifetime Warranty against defects in materials and workmanship. Lifetime warranty is a guarantee on the lifetime of the product on the market. All Levenhuk accessories are warranted to be free of defects in materials and workmanship for six months from date of retail purchase. Levenhuk will repair or replace such product or part thereof which, upon inspection by Levenhuk, is found to be defective in materials or workmanship. As a condition to the obligation of Levenhuk to repair or replace such product, the product must be returned to Levenhuk together with proof of purchase satisfactory to Levenhuk.
This warranty does not cover consumable parts, such as bulbs (incandescent, LED, halogen, energy-saving and other types of bulbs), batteries (rechargeable and non-rechargeable), electrical consumables, etc.
LUNT SOLAR SYSTEMS:
This Warranty is extended by LUNT Solar Systems LLC to the original purchaser of the LUNT Solar Systems LLC product. LUNT Solar Systems LLC does not provide warranty service to used or second hand equipment. Lunt Solar Systems LLC warrants its products to be free of manufacturing and workmanship defects under normal use for a period of 5 years from the date of purchase. LUNT Solar Systems LLC will repair or replace such product or part thereof which upon inspection by LUNT Solar Systems LLC, is found to be defective in materials or workmanship.
This warranty does not extend to any product whose serial number has been defaced or altered, or to any product which LUNT Solar Systems LLC determines to contain a defect or malfunction caused by damage while in the possession of the consumer, this includes de-contacting of etalon. De-contacting of the etalon only occurs if the product is subjected to shock, i.e. dropped and/or banged. The above descriptions may include incorrect installation, maladjustment, misuse, negligence or servicing by the consumer, or by a failure on the part of the consumer to provide reasonable and necessary maintenance. Further, LUNT Solar Systems LLC reserves the right to disallow any products from warranty coverage that are deemed to have been received by the end customer in other than factory-sealed condition. All products are to be inspected by the customer when purchased. LUNT Solar Systems LLC is not responsible for damages or loss during the shipping process.
Castle Navigation Inc. is only acting as a distributor of products manufactured by other companies. Thus, Castle Navigation Inc. expressly limits its guarantees and warranties for products sold hereunder to those extended and allowed by the manufacturing company to be passed through to Seller's customers. THERE ARE NO EXPRESS OR IMPLIED WARRANTIES WHICH EXTEND BEYOND THE DESCRIPTION OF THE FACE HEREOF. CASTLE NAVIGATION INC. DISCLAIMS AND EXCLUDES FROM ANY SALE OF PRODUCTS HEREIN ANY IMPLIED WARRANTIES OF MERCHANTABILITY, OR OF FITNESS OR SUITABILITY FOR ANY PARTICULAR PURPOSE OR USE. Since Castle Navigation Inc. cannot control the manner or use of its products after sale, Castle Navigation Inc. will not be responsible for any direct, consequential, or indirect damages to the purchaser or any third party or ultimate user of the products. Castle Navigation Inc. will, at its option, either replace the goods sold or refund the purchase price should a product defect be brought to its attention within 30 days after sale. All warranties cover only defects arising under normal use and do not include malfunctions or failure resulting from misuse, abuse, neglect, alteration, usage not in accordance with Limitation of liability, acts of nature, unusual temperatures or humidity, improper installation, or damage determined by Castle Navigation Inc. to have been caused by the customer, or repairs made by anyone other than Castle Navigation Inc., or you with the assistance of Castle Navigation Inc. technical support. Castle Navigation Inc.'s responsibility under its limited warranties is limited to repair or replacement, either of which may be selected by Castle Navigation Inc. at its sole discretion. Any parts replaced by Seller become the property of Seller. All limited warranties granted on Products are to the initial customer end-user and are non-transferable. Customer agrees to indemnify and hold seller harmless from all claims, judgments, liabilities, expenses, or costs arising from customer’s breach of these terms and conditions of sale and/or acts or omissions.
WEEMS & PLATH:
More than half of Weems & Plath products carry a lifetime warranty, while other products carry a 2-year warranty.
To initiate a return on an item that is covered by warranty, you MUST obtain an RMA number and the correct return address from us (we will provide both of these). Any returned shipments that do not contain a valid RMA number will not be accepted.
To retrieve an RMA number, or for more details, please email us at firstname.lastname@example.org!
Explore Scientific 28x100mm BT-100 SF Large Binoculars with 62 Degree LER Eyepieces - 01-14220
Giant binocular for observing the starry sky, nature and landscape.
Observe the beauty of the starry sky at night and distant objects in nature during the day. Globular star clusters, glowing gas nebulae, the moon with its craters and even planets can be observed wonderfully on a clear night. But also all other distant things in nature and landscape, even ships and airplanes can be seen in detail. With the all-round binoculars of the EXPLORE SCIENTIFIC BT series, you can get up very close. Thanks to the large, light-gathering lenses and the professional coatings on all lens surfaces, these binoculars produce bright and brilliant images even at night and at twilight, providing a special viewing pleasure. The comfortable 45 degree viewing angle allows fatigue-free use even when the binoculars are tilted strongly.
A large binocular can also be called a double refractor telescope
One complete lens telescope with the full light gathering power is available per eye. Experience a whole new dimension of observing. Objects are reproduced almost vividly in these binoculars and observing with both eyes is basically very relaxed. Last but not least, this comfortable way of observation increases the recognition of the finest details and effectively prevents rapid eye fatigue.
Extremely robust binoculars with magnesium housing, sealed and filled with nitrogen
The BT series binoculars are designed for tough outdoor use. The IPX6 sealed and nitrogen-filled design effectively prevents fogging of the internal optics even under difficult weather conditions. The very light magnesium housing saves weight and makes it easy to handle. Two EXPLORE SCIENTIFIC 20mm eyepieces of the 62 degree LER series already included. EXPLORE SCIENTIFIC is an established manufacturer of extremely high-quality eyepieces in the astronomy scene. An optical system is only as good as its weakest component. Therefore we have decided to deliver these giant binoculars with a pair of quality eyepieces of the 62 degree LER series. With an apparent field of view of 62 degrees and a focal length of 20mm, the BT-100 binoculars produce a 28x magnification. Thus these wide angle eyepieces offer a very good overview (field of view 2,3 degree) at moderate magnification. The large interpupillary distance of these LER (long eye relief) eyepieces of 15mm and soft silicone eyecups, which can be turned inside out, also guarantee a comfortable and relaxed view. For astronomy, a flat and sharp image field is advantageous and offers a particularly impressive viewing experience even during the day. Due to the waterproof design and the argon filling, these eyepieces are absolutely durable and easy to clean.
Interchangeable eyepieces with 1.25 inch / 31.7mm plug-in diameter
Adjust the magnification and field of view to your individual needs and choose from a wide range of available eyepieces. All eyepiece types with a plug-in diameter of 1.25 inch / 31.7mm can be used with the binoculars of the BT series. Especially recommended are EXPLORE SCIENTIFIC eyepieces of the 62 and 82 degree series with focal lengths from 8 to 26mm (see item No. 02188xx and 02196xx). The magnification can be varied from 21x to 70x (focal length binoculars : focal length eyepiece = magnification). The eyepieces are held in the binoculars by a precise brass compression ring clamp and guarantee a tilt free position.
Use of color and nebula filters for astronomical observations
Increase the contrast and visibility of objects and details by screwing the corresponding filters directly into the thread of the eyepiece sleeves. The use of color and nebula filters must of course always be done in pairs. Suitable are all EXPLORE SCIENTIFIC screw filters with 1.25inch / 31.7mm diameter (see item No. 03102xx)
Comfortable 45 degree view and helical single focus
The 45-degree viewing angle allows a relaxed observation position even when the binoculars are tilted strongly. Also the individual interpupillary distance can be adjusted in a range from 54 to 76mm. With the fine helical individual focusing, precise focusing is achieved effortlessly. Extendable dew caps The integrated dew caps can be removed in high humidity and cold conditions. This avoids fogging of the outer objective lenses and effectively shields additional control light coming in from the side.
Integrated carrying handle
A metal carrying handle located at the center of gravity facilitates transport and ensures a secure hold during tripod assembly.
Suitable tripods and tripod connection
When using these large binoculars, a sturdy photo tripod with an appropriate load capacity is highly recommended. The connection is made via two 1/4 inch or one 3/8 inch threaded holes (standard photo tripod thread) in the tripod adapter of the binoculars. The ideal solution is to use the optional available EXPLORE SCIENTIFIC U-Mount with field tripod (item No. 01-14300). This is specially designed for the large binoculars of the BT series and carries these devices absolutely safely. The excellent mechanism with adjustable friction in both axes allows easy moving and tracking. The binocular position is kept stable depending on the adjusted friction intensity. Vibrations are reduced to a minimum by the massive construction of the U-Mount and the large stainless steel tripod. Even at high magnification there are no vibrations and the finest details can be observed.
- Powerful large binoculars with a 100 mm objective diameter
- Observation of the starry sky and terrestrial objects
- Extremely robust binoculars, sealed and filled with nitrogen
- Convenient 45-degree view and individual focusing, carrying handle
- Two high quality ES 62 degree LER eyepieces 20 mm Ar included
- Eyepiece holder 1.25 inch / 31.7mm, interchangeable eyepieces
- Matching eyepieces of the ES 62 or 82 degree series are available
- Extendable dew caps prevent condensation on the lenses
- Tripod connection: 2 x 1/4 inch and 1 x 3/8 inch photo thread
- Optional accessories: Item 01-14300 U-mount with field tripod
|Optical design||Achromatic refractor Porro|
|Mirror / lens diameter||100 mm|
|Focal length||550 mm|
|Apparent Facial field||62 degrees|
|Type of remuneration||Enhanced Multilayer Desposition (EMD)|
|Exit pupil min.||3.6 mm|
|Field of view||2.3 degrees|
|Water resistance protection level||IPX6|
|Exit pupil distance||15 mm|
|Total length||520 mm|
|Total width||270 mm|
|Total height||155 mm|
|Total net weight||6800 g|