The longest focal length in the 52° Series with the longest eye relief, the 40mm is also the only 2.0-inch O.D. eyepiece in this series. Explore Scientific now has three 40mm eyepieces in its collection, the other two are the 40mm 62° Series, and the 40mm 68° Series. At this focal length, this eyepiece is generally reserved for deep sky observers who challenge themselves to observe near the faintest observable limit of their telescopes. The huge true field of view is perfect for deep sky objects like the Andromeda Galaxy, the Rosette Nebula, as well as large star clusters, and comets.
Explore Scientific Waterproof Eyepieces - Comfort, Quality, Value. The Explore Scientific 52° Series eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece. Expect exceptional quality, eye relief and value versus a comparably priced Plossol.
Another great benefit of these eyepieces is the excellent contrast and ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.
SPECIFICATIONS for: 52 Degree Series Eyepieces EPWP5240-01
Focal Length
40 mm
Barrel Size/Type
2.0" O.D. / Double Taper
Eye Relief
27.1mm
Field Stop Diameter
36.3mm
Coatings
EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups
4 Elements in 2 Groups; Edge Blackened
Filter Thread
Fits Standard 2.0-inch Dia. Thread in Filters (48mm x 0.75mm)
Waterproof
O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup
Removable Flip-Down Style Soft Silicone Rubber
Lens Caps
Slide-on Top and Bottom
Materials
Optical Glass; Aluminum; Steel; Silicone Rubber
Markings
Laser Engraved: Focal Length; Series; Serial Number; Brand
Length
96.6mm
Width
61.8mm
Weight
385.5 grams; 13.6 oz
Warranty: Limited USA One Year Warranty when product is registered within 60 days of purchase.
WARNING: These products can expose you to chemicals including lead, which is known to the State of California to cause cancer, and cadmium, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
The longest focal length in the 52° Series with the longest eye relief, the 40mm is also the only 2.0-inch O.D. eyepiece in this series. Explore Scientific now has three 40mm eyepieces in its collection, the other two are the 40mm 62° Series, and the 40mm 68° Series. At this focal length, this eyepiece is generally reserved for deep sky observers who challenge themselves to observe near the faintest observable limit of their telescopes. The huge true field of view is perfect for deep sky objects like the Andromeda Galaxy, the Rosette Nebula, as well as large star clusters, and comets.
Explore Scientific Waterproof Eyepieces - Comfort, Quality, Value. The Explore Scientific 52° Series eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece. Expect exceptional quality, eye relief and value versus a comparably priced Plossol.
Another great benefit of these eyepieces is the excellent contrast and ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.
SPECIFICATIONS for: 52 Degree Series Eyepieces EPWP5240-01
Focal Length
40 mm
Barrel Size/Type
2.0" O.D. / Double Taper
Eye Relief
27.1mm
Field Stop Diameter
36.3mm
Coatings
EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups
4 Elements in 2 Groups; Edge Blackened
Filter Thread
Fits Standard 2.0-inch Dia. Thread in Filters (48mm x 0.75mm)
Waterproof
O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup
Removable Flip-Down Style Soft Silicone Rubber
Lens Caps
Slide-on Top and Bottom
Materials
Optical Glass; Aluminum; Steel; Silicone Rubber
Markings
Laser Engraved: Focal Length; Series; Serial Number; Brand
Length
96.6mm
Width
61.8mm
Weight
385.5 grams; 13.6 oz
Warranty: Limited USA One Year Warranty when product is registered within 60 days of purchase.
WARNING: These products can expose you to chemicals including lead, which is known to the State of California to cause cancer, and cadmium, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Our goal is to keep the ordering process as simple as possible.
Please read through this instructional guide so you can understand how the process works and what you should expect to happen once you place your order with us.
Order Confirmation:
You will receive an order confirmation email as soon as you place your order. This means that we have authorized your credit card for the purchase and are preparing your order for shipment.
As soon as we receive your order, we automatically reach out to our warehouse to confirm that it is in stock and available for immediate shipment.
If your item is on backorder or unavailable, we will reach out to you via email.
If your item(s) are available for immediate shipment, we will process the charges and submit the order for shipment.
MagnifyUSA.com is committed to providing the best customer service in the industry. Our goal is to make your shopping experience as easy going as possible and ensure that you are 100% satisfied with your purchase. We will do our best to meet your expectations at all times.
Unused, uninstalled, and resalable merchandise in new condition and in the original packaging may be returned for a refund within 30 days of the delivery date unless otherwise noted on the product page or below*.
You must notify us of your intent to return within 30 days of delivery date.
There is a 15% restocking fee.
Our return policy applies to cancellations made after an item has been physically shipped or refusal at the time of delivery.
We will refund the product price minus any applicable fees and charges.
Original shipping charges are non-refundable.
You are responsible for any return shipping charges.
Refunds will be applied to the same payment method used when original purchase was made.
The Following Cannot Be Returned
Products which are eligible for parts under manufacturer warranty
Products that have had their original manufacturer packaging opened
Products that have been out of their original manufacturers' packaging
It is the customer's responsibility to return the merchandise in new resalable condition. Refunds are only issued after returned items have been received and inspected.
If a returned item gets damaged during the transportation, it is the customer's responsibility to file the claim with the carrier. No refund can be issued in this case.
Returns are easy, simply contact us for a returns number and send your item to our returns center for fast processing. We'll get you a replacement or refund in a snap!
In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down.
We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again.
The longest focal length in the 52° Series with the longest eye relief, the 40mm is also the only 2.0-inch O.D. eyepiece in this series. Explore Scientific now has three 40mm eyepieces in its collection, the other two are the 40mm 62° Series, and the 40mm 68° Series. At this focal length, this eyepiece is generally reserved for deep sky observers who challenge themselves to observe near the faintest observable limit of their telescopes. The huge true field of view is perfect for deep sky objects like the Andromeda Galaxy, the Rosette Nebula, as well as large star clusters, and comets.
Explore Scientific Waterproof Eyepieces - Comfort, Quality, Value. The Explore Scientific 52° Series eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece. Expect exceptional quality, eye relief and value versus a comparably priced Plossol.
Another great benefit of these eyepieces is the excellent contrast and ease with which you can gaze, not directly at an object, but slightly to either side. This skill, called using averted vision, is especially helpful when observing faint objects, because using averted vision puts the image on a part of your eye that is more sensitive to light, allowing you to see fainter images.
SPECIFICATIONS for: 52 Degree Series Eyepieces EPWP5240-01
Focal Length
40 mm
Barrel Size/Type
2.0" O.D. / Double Taper
Eye Relief
27.1mm
Field Stop Diameter
36.3mm
Coatings
EMD (Enhanced Multi-Layer Deposition) on all lens-to-air surfaces
Lens Elements/ Groups
4 Elements in 2 Groups; Edge Blackened
Filter Thread
Fits Standard 2.0-inch Dia. Thread in Filters (48mm x 0.75mm)
Waterproof
O-Ring Sealed Argon Gas Purged; Tested Under 1 Meter of Water for 30 Minutes
Eyecup
Removable Flip-Down Style Soft Silicone Rubber
Lens Caps
Slide-on Top and Bottom
Materials
Optical Glass; Aluminum; Steel; Silicone Rubber
Markings
Laser Engraved: Focal Length; Series; Serial Number; Brand
Length
96.6mm
Width
61.8mm
Weight
385.5 grams; 13.6 oz
Warranty: Limited USA One Year Warranty when product is registered within 60 days of purchase.
WARNING: These products can expose you to chemicals including lead, which is known to the State of California to cause cancer, and cadmium, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Our goal is to keep the ordering process as simple as possible.
Please read through this instructional guide so you can understand how the process works and what you should expect to happen once you place your order with us.
Order Confirmation:
You will receive an order confirmation email as soon as you place your order. This means that we have authorized your credit card for the purchase and are preparing your order for shipment.
As soon as we receive your order, we automatically reach out to our warehouse to confirm that it is in stock and available for immediate shipment.
If your item is on backorder or unavailable, we will reach out to you via email.
If your item(s) are available for immediate shipment, we will process the charges and submit the order for shipment.
MagnifyUSA.com is committed to providing the best customer service in the industry. Our goal is to make your shopping experience as easy going as possible and ensure that you are 100% satisfied with your purchase. We will do our best to meet your expectations at all times.
Unused, uninstalled, and resalable merchandise in new condition and in the original packaging may be returned for a refund within 30 days of the delivery date unless otherwise noted on the product page or below*.
You must notify us of your intent to return within 30 days of delivery date.
There is a 15% restocking fee.
Our return policy applies to cancellations made after an item has been physically shipped or refusal at the time of delivery.
We will refund the product price minus any applicable fees and charges.
Original shipping charges are non-refundable.
You are responsible for any return shipping charges.
Refunds will be applied to the same payment method used when original purchase was made.
The Following Cannot Be Returned
Products which are eligible for parts under manufacturer warranty
Products that have had their original manufacturer packaging opened
Products that have been out of their original manufacturers' packaging
It is the customer's responsibility to return the merchandise in new resalable condition. Refunds are only issued after returned items have been received and inspected.
If a returned item gets damaged during the transportation, it is the customer's responsibility to file the claim with the carrier. No refund can be issued in this case.
Here are more great reasons to buy from us:
Returns are easy, simply contact us for a returns number and send your item to our returns center for fast processing. We'll get you a replacement or refund in a snap!
In the unlikely event that you find your item cheaper at another online store, just let us know and we'll beat the competitor's pricing hands-down.
We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again.
