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Explore Scientific AR127 127mm f/6.5 Air-Spaced Doublet Achromat Refractor w/ TwiLight I Alt-Azimuth Mount and Tripod

1.0 (1 Reviews) Read Reviews Write Review
Brand Explore Scientific
Part Number DAR127065-MAZ-01

Product Info

Manufacturer Description

The classic air-spaced, crown-and-flint, doublet achromatic refractor is reborn with the aim to produce superior-class optical figure in a short (f/6.5) focal length design with Explore Scientific Air-Spaced Doublet ARSeries. These optics are an extreme value, produce stunning images of deep sky objects, double stars, planets, and the moon that are a small fraction of the price of comparable aperture apochromat refractors. Finally one can own a diffraction-limited high quality refractor for a relatively modest investment.

Designed to handle the rigors of public star parties and educational outreach, the Explore Scientific AR Series has standard hardware which includes a precision two-speed focuser, a 99% dielectric-coated 2-inch diagonal, and an 8x50 finder scope. You can be confident that the quality and construction of these telescopes will allow heavy use for many years and are backed with the Explore STAR Transferrable Extended Life of the Product Warranty.

It's All About the Optics!
The optics in their collimatable lens cell are fully multi-coated to eliminate light scatter and maintain image contrast. We precision collimate every Explore Scientific telescope at our factory to give optimum performance. Although you may never need to adjust optical alignment, the AR Series allows for collimating the lens set should the telescope ever require it.

Contrast is further enhanced with multiple baffles that mask and deflect unwanted stray light.

Deluxe Two-Speed Focuser
The Explore Scientific Air-Spaced Doublet AR Series telescopes include a precision 2-inch, two-speed as standard equipment. The eyepiece holder uses a compression ring to prevent the eyepiece or camera barrel from scoring.

On those prestine nights of steady seeing, Saturn's Rings can forever affect the hearts and minds of almost anyone who lays eyes on them. It's nights like these that astronomers like to set up their refractors and push the magnification to the limits, not only to see the magnificence of the planet at greater scale but to really test the optical and mechanical quality of the telescope.

Many telescopes are only supplied with a standard single-speed focuser, you will find that a tiny nudge will throw out focus and turn your night into one of frustration.

So we included as standard equipment, on all Explore Scientific ARSeries, a ten-to-one, two-speed precision focuser with tension adjustment and lock to obtain and hold perfect focus. We think you'll agree that such precision is worth it.

Universal Mounting Plate
The Universal Adjustable Mounting Plate of the AR 127 fits on many popular equatorial and Altaz mounts, including mounts supplied by Explore Scientific, Vixen, and Meade LXD55/75.

Instead of using a cast metal part, Explore Scientific's Universal Mounting Plate is made from extruded aluminum for added strength, it is afterall what secures your telescope to the mount. We also include adjustment screws and locking bolts to allow adjustments to position the angle of the telescope when it is placed on its mount, an important feature when using an equatorial mount.

Viewing Comfort and the Preservation of Precious Light
The Two-Inch Dielectric Diagonal includes a 1.25" eyepiece holder adapter and dust covers to protect the mirror.

The purpose of a diagonal is to securely hold your eyepiece and to give you a comfortable viewing angle.

Provided as standard equipment, Explore Scientific's Two Inch Dielectric Diagonal incorporates a light-weight, one-piece diagonal body that securely cradles the precision polished diagonal flat mirror, insuring precision alignment. Ultra-high reflective coatings (99% reflective) composed of multiple thin layers of dielectric material delivers maximum light output.

Both 2" and 1.25" eyepiece holders use compression rings instead of a simple set-screw to more securely hold your valued eyepiece (or imaging device) and to minimize scoring of eyepiece barrels. You can thread standard 48mm filters into the barrel.

The purpose of a diagonal is to securely hold your eyepiece and to give you a comfortable viewing angle.

Provided as standard equipment, Explore Scientific's Two Inch Diagonal incorporates a light-weight, one-piece diagonal body that securely cradles the precision polished diagonal flat mirror, insuring precision alignment.

8x50 Finder Scope
The Explore Scientific 8x50 Finder Scope provides a true field of view of 6°. Its coated optics provide a bright high-resolution image so that many faint stars and nebulosity can be detected for precise aiming.

The front objective can be custom focused to provide a sharp image every time.

Explore STAR Transferrable Extended Life of the Product Warranty!
Buy a telescope for yourself or give it as a gift, then send in the registration form to receive our exclusive Explore STAR Warranty in the Americas!

All Explore Scientific telescopes and telescope accessories are covered under our standard U.S.A. One Year Limited Warranty against defects with proof of purchase, but you can extend this limited warranty to Explore STAR by simply filling out the product registration and submit it in within 60 days.

This program is also available to the person who receives your gift of an Explore Scientific telescope. You don't need to give them the purchase receipt, just remind them to fill out the registration and submit it, and we'll take care of the rest.


1.0 (Based on 1 Reviews) 0% of reviewers recommended this product.
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    1. jeremiah2229

      jeremiah2229 Member

      Skill Level
      Time with Product
      User Notes:
      Review by Jeremiah2229 of USA.
      Jul 27, 2015

      1.0 Mount is not capable...



      Difficult to Use,Unstable,Difficult To Focus


      The AR127 on the Twilight I is a no go. I was skeptical about this combination before purchase but since Explore Scientific rates it for 18 pounds I gave it a shot. The Twilight I cannot hold the AR127. Wobbles are quite bad, just touching the fine focus will cause wobbles that take 5+ seconds to calm. I did mount a 4" refractor the same length as the AR102 but about half the weight and this did help but IMHO this mount is meant for light, short 80mm scopes. I find it disturbing that these two pieces are being sold as a bundle.

      The scope seems to be fine but I cannot really comment because I have no mount yet to support it so all I've done is peek at the moon. CA was acceptable and views/details were fine. As I stated the mount can only really support a light, short scope. The azimuth slow-motion worked with no problem, however, just touching the altitude (touching anything other than the azimuth slo-mo) caused unacceptable wobbles. Of course this is compounded as you go up in magnification.

      These two pieces should not be sold as a bundle, period. Losmandy AZ8 should tame the scope with no problems but there is a waiting list for it at present.

      Bottom Line: Would you recommend this item? No
      Was this review helpful? Yes / No

      This review was provided courtesy of AgenaAstro.com

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      Telescope Aperture 5" (127mm)
      Manufacturer Explore Scientific
      Telescope Aperture 5in - 8in
      Telescope Series Exp Scientific AR Series