Explore Scientific ED80 Review
The Explore Scientific ED80 was recommended to me by a friend I met on an online forum. He had recently posted another exquisite photograph using the ED80, and he had my attention. I had no idea that this telescope would enter me into a world of astrophotography that I never knew existed. This apochromatic telescope was a pivotal factor in my on-going dedication to the art of astrophotography with a DSLR and telescope.
Explore Scientific ED80 Review
When I first began taking pictures of deep-sky objects through my telescope, they were shaky images with bloated football stars and poor focus. Even the slightest breeze would jiggle my bulky Schmidt-Newtonian, thereby ruining my current 3-minute exposure. This experience left me discouraged, and in search of a telescope that was designed for my astrophotography needs. I desired to capture sharp images with pinpoint stars like the ones I had seen on APOD (Astronomy Picture of the Day). All of my favorite images online had something in common, they were imaged using an Apochromatic Refractor!
Here is a video showcasing a few photos I took using the Explore Scientific ED80:
I also noticed terms like “doublet” and “triplet” being used, so I investigated further. It turns out that a triplet refractor can offer impressive color correction and brilliant high-contrast images. Traits that make this type of telescope perfect for astrophotography. Now, which triplet “Apo” to choose?
Thankfully the team at Explore Scientific designed a perfect specimen of the aforementioned instrument, at a price even an astrophotographer on a budget like myself could afford! The Explore Scientific ED80 Triplet Apochromatic Refractor. The version I purchased included a hard carrying case, illuminated reticle finder scope and a diagonal.
The very first deep-sky object I photographed through the ED80 was the Orion Nebula. I couldn’t believe how precise I could focus the stars using the heavy duty dual-speed 2″ focuser.
The fine-tuning knob was something I had never used before, and at this point, I could tell that this telescope was made for astrophotography. Even without a field-flattener, the stars remained sharp pinpoints almost to the very edges of my image.
When the very first frame appeared on the back of my DSLR display screen, my jaw hit the floor. At f/6, I was delighted with the amount of light I was able to capture in a 3-minute exposure with the modest 80mm objective. The 480mm focal length seems to be the “sweet spot” for capturing large, wide-field views of nebulae and large galaxies.
From the moment that first exposure of the Orion Nebula appeared on the camera screen of my Canon 450D, I was in love with the image quality produced by the Explore Scientific ED80.
After a quick adjustment using Sirius as my alignment and focus star, the illuminated reticle finder scope was a pleasure to use and to center my target in the frame. I would later swap out the finder scope for an autoguiding system, an easy switch into the bracket on the ED80.
The astrophotos I have been able to capture with this telescope have opened my eyes to a higher level of image quality. I have not been able to achieve images of this quality using a Newtonian telescope. I think that once you get used to the pinpoint stars and sharpness of an Apo, it’s hard to accept anything less. They say the best telescope is the one you use the most, and my ED80 has been used for more hours under the stars than I care to admit!
This refractor is incredibly portable. On most nights, I’ll have my DSLR attached, focused and ready to image in less than 10 minutes. The telescope’s light weight, short tube and “Vixen-style” dovetail make it a versatile instrument suitable for virtually any telescope mount. When not in use, it all packs away securely in the padded metal hard-case. While under the night sky, the dew-shield blocks stray light and protects the high-quality ED (extra low dispersion) glass on the objective.
I highly recommend the ED80 to beginner to intermediate astrophotographers looking for the highest possible image quality at an affordable price. I am so happy with the performance of the 80mm version, that upgrading to the Explore Scientific ED102 Carbon Fiber version was a no-brainer. If you want a second opinion on the ED80, talk to anyone that owns one! I am certain that they feel the same way.
Apochromatic Triplet Refractor
Focal Length: 480mm
Focal Ratio: f/6
This telescope has been an absolute pleasure to own and use for astrophotography over the past 4 years. At the time of purchase, my budget restricted me to smaller refractors in the 80mm range, but I had no idea of the wide-field astrophotography capabilities of the telescopes in this range. With a focal length of 480mm, this high-quality instrument can easily fit the entire Andromeda Galaxy in a single field of view, as well as M8 and M20.
A common question I get is about the finderscope bracket on the Explore Scientific ED80. Most users who intend to use the telescope for astrophotography will be connecting an autoguider telescope and camera to increase the precision tracking of the equatorial mount. Rather than attaching a separate bracket to hold this autoguiding telescope, I simply use the existing bracket that was designed to house the finderscope on the ED80. I would suggest using the Orion 50mm guidescope in the stock finderscope rings included with the Explore Scientific ED80.
Example Astrophotography Images:
The small weight and size (7.5 lbs., 18.5″ long with dew shield) of this instrument make it the ultimate grab and go telescope. This also means that even a modest tracking mount will have no trouble handling the weight of the telescope, along with all of the camera gear needed for astrophotography. My Sky-Watcher HEQ only requires 1 counterweight near the top of the shaft to balance the ED80, guide scope, guide camera, and my Canon Xsi DSLR.
The visual performance of this scope is excellent, especially when viewing bright planets or the moon. The diffraction-limited optics are appreciated when exploring the lunar terrain or using a high-powered eyepiece to view Saturn’s rings. I must confess that I am not an expert when it comes to comparing the visual performance of telescopes. However, the views I have experienced with the ED80 have noticeably more contrast than my 8″ Orion Newtonian Reflector.
The real reason I decided on this telescope was its superb photography potential. The air-spaced triplet optical design virtually eliminates chromatic aberrations and generates beautiful high-contrast images. The HOYA extra-low dispersion (ED) glass is a trait found in a much more expensive refractor telescope. The included diagonal helps me comfortable view the alignment stars while I calibrate my mount for a night of astrophotography. The dual-speed, Crayford-style focuser is ultra-solid and tightly locks my DSLR camera into place while imaging. The precision focuser knob comes in very handy when focusing my camera using the “frame and focus” (FWHM) tab on BackyardEOS.
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