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The ED127 127mm f/7.5 Essential Apochromatic ED Triplet Refractor Telescope from Explore Scientific
features a triplet apochromatic lens system with Extra-low Dispersion
(ED) glass and Explore Scientific's proprietary anti-reflection EMD
fully multicoated optics. This combination of glass, lenses, and
coatings virtually eliminates chromatic and spherical aberrations for
clear and bright images without distortion across the entire field of
view, with true color rendition. This is a powerful optical tube
assembly that can be used to see detailed views of celestial objects
from the Moon to deep sky objects like nebulae and galaxies. It is also
portable enough to be used as a grab-and-go option over larger and
heavier scopes or set up on a dual-mount rig for
A mounting cradle-ring clamps over
optical tube assembly (OTA). The cradle-ring allows the user to adjust
the orientation and position of the scope relative to the mount to
optimize viewing comfort and balance, while avoiding interference with
other equipment. The scope is offered without a mount or tripod, but a
Vixen-style dovetail plate makes it compatible with any alt-az or
equatorial mount with a Vixen-style saddle. Its two-speed
rack-and-pinion focuser helps make fine-focusing fast and precise. A 90°
star diagonal is also included for more comfortable viewing. The mirror
has dielectric coatings for a 99% light transmission for minimal light
loss when using it.
(From Burnham’s Celestial Handbook Volume
In the midst of
the sword that branches off of Orion’s famous belt, a tumultuous saga of
star formation is unfolding.
Lit by the glow of the newborn stars nestled in its wispy embrace, the
Orion Nebula is a stunning stellar nursery that has been studied,
documented and revered for centuries.
Unlike the vast majority of deep sky objects, this brilliant celestial
beauty is both bright enough and close enough to be seen with the naked eye
— although it will only appear as a slightly foggy star. To truly explore
some of the more awe-inspiring features that have made it a legend, you
will need a telescope.
By offering 5 inches of unobstructed viewing, the Explore
Scientific ED APO 127mm Triplet can significantly close the more
than 1,300-light year gap between ourselves and this magnificent showpiece.
This scope’s rich, high contrast views of the Orion Nebula will show that
it is so much more than a foggy star. It is a glowing cocoon teeming with
billowing gas and dust where stars and even planetary systems are being
So, what can you discover about the Orion Nebula at the eyepiece of the
One of the first features to explore is the tightknit open star cluster
known as the Trapezium. Although it appears as one brilliant mass to the
unaided eye, this close community of stars has several distinguishable
members that pop to life in the ED127. At the core of the Trapezium lies a
quartet of star systems that form the cluster’s signature trapezoidal
asterism. The largest and most luminous of these is Theta-1 Orionis C. This
huge binary powerhouse shines as brightly as 210,000 Suns and is largely
responsible for the beautiful glow at the heart of Orion’s Nebula.
In addition to providing illumination, Theta-1 Orionis C and its close
companions are producing intense stellar winds that have a profound impact
on the nebula. These fast-moving streams of protons, electrons and other
particles pierce the surrounding veil of dust and gas and manipulate it
into flowing ridgelines and revealing voids. The ED127 will show a few of
the most prominent of these sculpted features, which hint at the nebula’s
The Orion Nebula is a truly spectacular celestial beauty filled with
inspiring sights. As you explore its curving lines, gossamer webs and
brilliant stellar inhabitants, you can envision the chaos of creation that
is happening within. This is where stars are blazing to life. This is where
the seeds of future solar systems are manifesting in protoplanetary disks.
This is where the action is happening, and the ED127 can put you right in
the midst of it.
The above image of Orion's Nebula was
shot on Jan 31, 2016 by Steve Siedentop with his ED127 APO Triplet Carbon Fiber (exactly the same
optics and mechanics but with a carbon fiber tube) and 2' Field Flattener. He used a Canon modified T2i using
Backyard EOS, PHD. He shot 8 - 5 minute Light exposures at ISO400
and 15 - 5 minute Dark exposures at ISO400. The images were processed in
Steve says "I
have to confess that I didn’t spend a ton of time acquiring data because I
was just testing out the scope/reducer configuration for the first time and
didn't know what to expect. The fact that I was able to produce an
image with this level of detail in just 40 minutes is of great merit to the
ED127CF and .7 Reducer combination."