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Explore Scientific ED102 Essential Series Air-Spaced Triplet APO Refractor Telescope - ES-ED10207-02

Regular price   $1,289.99 Sale price   $1,199.99 Save 6%

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- Olivia 

"Totally floored by the Explore Scientific ED102 Essential Series Telescope! 🌌 The clarity of lunar craters, Saturn's rings, and the Orion Nebula is mind-blowing. And with the PMC-Eight mount, astrophotography is a breeze. Absolutely thrilled with my buy! ✨".| Verified Purchase"

Main Benefits:

  • Aperture & Focal Length: Aperture: 102mm (4") - gathers enough light for detailed images. Focal Length: 714mm (f/7) - provides moderate magnification for various objects.
  • Mount type: Not included, requires separate mount
  • Optics: Air-spaced triplet design minimizes chromatic aberrations (color fringes). HOYA FCD1 ED glass further reduces chromatic aberrations. Multi-coated surfaces improve light transmission and reduce glare.

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Description

The Explore Scientific ED102 Essential Series Air-Spaced Triplet APO Refractor Telescope is a true apochromat refractor that reveals our Moon’s stark chiseled craters, Jupiter’s orderly cloud belts and the blue-white stars of the Orion Nebula popping against the complex misty cloud they call home. The ED102 Essential Series Apochromatic Refractor will open up a treasure trove of night sky treats, and provide a solid optical platform to begin serious deep sky astrophotography. 

A nice compromise between portability and aperture, this versatile high-end telescope offers true diffraction-limited optics and has an objective lens size that performs well in lunar, planetary and deep sky viewing situations.

Featuring an air-spaced triplet optical design that virtually eliminates chromatic aberrations, this telescope generates brilliant high-contrast images by combining genuine HOYA FCD1 extra-low dispersion (ED) glass and proprietary EMD enhanced multi-layer coatings.

Comes with 2 extension tubes for the 2" rack-and-pinion focuser and the Explore Scientific 2N1 Finder Scope Base installed on scope. (Finder scope not included.)

Specification

Item Number ES-ED10207-02
Focal Length 714mm
Focal Ratio f/7
Magnitude 12.5
Resolution 1.14 arcsec
Tube Length w/ Dew Shield 30.5"; 774mm
Tube Length w/out Dew Shield 23.75"; 603mm
Diameter 119mm
Weight 12 lb; 5.4 kg
Dovetail Vixen

Warranty

Limited Warranty is one year, which converts to the Explore STAR Transferable Extended Life of the Product Warranty when product is registered within 60 days of purchase.

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Explore Scientific ED102 Essential Series Air-Spaced Triplet APO Refractor Telescope - ES-ED10207-02

Additional Features

Lightweight metal tube (12 lbs with dew shield) for portability.
2" rack-and-pinion focuser supports heavy astrophotography equipment.

Explore Scientific 2N1 Finder Scope Base installed (finder scope sold separately).
Vixen-style dovetail plate for easy mount compatibility.

Explore Scientific ED102 Essential Series Air-Spaced Triplet APO Refractor Telescope - ES-ED10207-02

Enhanced Astronomical Experiences

Witness celestial wonders with renewed awe: From the delicate rings of Saturn to the vibrant colors of deep-sky nebulae, experience the night sky with exceptional clarity and detail, surpassing what the naked eye can offer.

Feel the vastness and connect with the universe: Immerse yourself in the grand scale of the cosmos, fostering a deeper appreciation for the wonders that lie beyond our planet.

Share the magic with others: Host stargazing parties and ignite curiosity in friends and family, inspiring a shared passion for astronomical exploration.

Explore Scientific ED102 Essential Series Air-Spaced Triplet APO Refractor Telescope - ES-ED10207-02

Personal Growth and Enrichment

Fuel your curiosity and thirst for knowledge: Unraveling the mysteries of the universe ignites a lifelong journey of learning and exploration, constantly seeking new discoveries and pushing the boundaries of your understanding.

Challenge yourself and develop new skills: Astrophotography demands patience, planning, and technical expertise, offering continuous learning and a sense of accomplishment as you master new techniques.

Find peace and escape the daily grind: Immerse yourself in the tranquility of the night sky, experiencing mental clarity and stress relief under the stars, connecting with nature and finding solace in its vastness.


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From Beginner to Moonwalker

"As a complete newbie to astronomy, I was overwhelmed by the options. Telescope Warehouse's friendly and knowledgeable staff guided me through the process, making me feel confident and excited. The free return policy gave me peace of mind, and the whole experience was smooth and hassle-free." - Ricardo Simpson., Los Angeles

From Skeptic to Starstruck

"I'm a seasoned astronomer with high standards, and Telescope Warehouse exceeded them all. Their collection of telescopes is truly impressive, meticulously curated with the discerning enthusiast in mind. My new telescope is an investment that will last a lifetime, and I owe it all to Telescope Warehouse." - Emily C., Houston

Cheering for the Stars

"I've been a telescope enthusiast for years, but buying online always felt risky. Telescope Warehouse changed everything! Their expert team helped me choose the perfect telescope for my needs, and their expertly curated stock ensured I got a top-quality instrument. Now, every night feels like a cosmic adventure thanks to Telescope Warehouse. American service at its finest!" - Sarah M., New York City


FREQUENTLY ASKED QUESTIONS

We ship only within USA. Please provide here you own shipping information, including times, prices, options etc.

All orders will be delivered during 2-5 business days.

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We accept, Visa, MasterCard, Discover, and American Express but feel free to contact us for other payment options.

We will send tracking information to the e-mail address associated with your order once the item has shipped. If you have not received your tracking information and it has been over 2 business day, please contact us at (+1) 845 -363-7517

When ordering as a gift for someone, be sure to enter in your email address to receive all summary information but enter in the recipient’s name and shipping information. We will be sure to keep all prices and receipts out of the package.

If for any reason you are not completely satisfied with your purchase, within 30 days of placing your order, we will refund you for your purchase with no questions asked.

Aperture size is the diameter of the main lens or mirror in a telescope, and it is the most important factor in determining how much light the telescope can gather. More light means brighter and more detailed images. Generally, larger apertures are better, but they also tend to be more expensive and bulkier.

Magnification is important for making objects appear larger, but it does not create more detail. Aperture is more important for determining the overall quality of the image, including its brightness, resolution, and contrast. However, magnification can still be useful for getting a closer look at specific features of an object that you can already see with lower magnification.

All telescopes are affected by light pollution to some extent, but Dobsonians and reflectors are generally less affected than refractors. This is because refractors have more internal surfaces where light can bounce around and cause glare. If you live in an area with a lot of light pollution, you may want to consider a Dobsonian or reflector, or find a dark observing location.

The essential accessories for your telescope will depend on your specific needs and interests. However, some common recommendations include:
Extra eyepieces: This will allow you to change the magnification of your telescope to suit different observing conditions and objects.
A finder scope: This is a small, low-power telescope that helps you aim the main telescope at the correct area of the sky.
A collimation kit: This is used to adjust the alignment of the mirrors in a reflector telescope.
A star chart or planisphere: This will help you identify objects in the night sky.

Dobsonian telescopes are generally the easiest to set up, as they typically only require placing them on the ground and aligning the finder scope. Refractors and reflectors may require more assembly and alignment, but the process is not overly complicated. Many telescopes come with instructions and online resources can also be helpful.

You may need a few basic tools, such as a screwdriver or Allen wrench, to assemble some telescopes. However, you do not need any special knowledge to get started. There are many resources available to help you learn how to use your telescope, such as online tutorials, books, and astronomy clubs.

Here is a general guide to what you can expect to see under typical observing conditions with different telescope apertures:

50mm-70mm: You can see the phases of Venus, the moons of Jupiter, and some brighter deep sky objects like the Andromeda Galaxy and the Orion Nebula.
70mm-100mm: You can see more detail in the planets, including the rings of Saturn and the cloud bands on Jupiter. You can also see more faint deep sky objects.
100mm+: You can start to see more challenging deep sky objects, such as galaxies, nebulae, and star clusters. You can also see more detail in fainter objects like comets and asteroids.

We are often advised that you are able to see them through any small telescope, or even binoculars. But you really need a telescope with at least 40 times magnification to clearly see the detail of the rings as separate from the planet. And the bigger the telescope, the better.

For Galactic Observations: A reflecting telescope with a larger aperture (150mm-250mm) and a moderate focal length (750mm-1250mm) is ideal for capturing distant galaxies. Telescopes such as the Orion XT8 or the Celestron Advanced VX 8" offer excellent light-gathering capabilities and versatility.

Optical telescopes, for example, can see objects up to billions of light-years away, while radio telescopes can detect signals from even further distances. However, when it comes to observing the universe's earliest moments, telescopes can only see so far.

In general, a top-quality 4-inch refractor shows deep-sky objects about as well as a 5-inch reflector or catadioptric, and might even do a bit better on the planets. Most telescopes with apertures of 80 mm or less are refractors.

Refractor Telescopes: Refractors use lenses to gather and focus light, offering crisp and clear images. They are excellent for planetary observation due to their ability to provide high contrast and detailed views.

Some of the most newly detected objects may be over 13 billion light years away, as derived from a standard model of the Universe. However, a powerful new generation of telescopes, like the James Webb Space Telescope, will be needed to confirm the suspected distances of these objects.

The most important aspect of any telescope is its aperture, the diameter of its main optical component, which can be either a lens or a mirror. A scope's aperture determines both its light-gathering ability (how bright the image appears) and its resolving power (how sharp the image appears).

The telescope you want has two essentials: high-quality optics and a steady, smoothly working mount. And all other things being equal, big scopes show more and are easier to use than small ones, as we'll see below. But don't overlook portability and convenience — the best scope for you is the one you'll actually use.

With just a small or medium-sized telescope, skygazers can easily observe planets. You'll be surprised how much of our solar system you can see! And you don't need a dark sky to view all of our solar system's planets; even under city lights, Venus, Mars, Jupiter and Saturn can be easy to see with a telescope.

In summary: Refractors generally have the edge over reflectors for a quality image, both from the standpoint of lens/mirror quality and precision optical mountings, and lack of central obscurations.


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