Explore Scientific AR102 Doublet Refractor
with Twilight I Alt-Azimuth Mount
This Explore Scientific AR102 Doublet Refractor features air-spaced doublet optics produced from flint and crown glass to give you fantastic views of celestial objects. This refractor includes everything you need to get started, including a 2" dual-speed Crayford-style focuser, a one-piece 2" diagonal with 99% dielectric coatings, an 8X50 finderscope, and quick release bracket, and a cradle ring assembly with a Vixen-style dovetail mount. The Explore Scientific AR102 is ready to go wherever the skies take you!
The Explore Scientific Twilight I mount and tripod are the perfect companions to the AR102. You will be able to set up in moments wherever you are and glide effortlessly from one object of interest to another. The AR102/Twilight set-up is also perfect for terrestrial use! Set it up on your deck or in your backyard and explore the local terrain. The large aperture of this telescope will give you bright images, even in lower light conditions of dusk and dawn.
About the Explore Twilight I Mount
The Twilight I alt-azimuth mount head is made of powder-coated aluminum and there are worm gears on both axes. The adjustable angle head can be tilted forward or back at a 45° angle, or you can point it straight up for viewing at the zenith. Slow motion control cables are attached on the vertical and horizontal axes and are easy to turn during the night, even with gloves on, due to the over-sized knurled knobs that are attached to the end of each cable. A small wrench is included with this package, and is stored in the fork arm and held in place with a magnet. If you need to make quick adjustments to your mount, it is a snap to access the wrench and then store it safely away when done. It is a small thing, but an adjustable wrench is one less tool you will need to remember to bring with you on observing sessions!
The chrome-plated steel tripod that comes standard with the Twilight I mount has adjustable legs and a wide footprint of 42 inches, which makes the tripod more stable. A spreader bar locks against the inside of the legs to secure the tripod even further and keep vibrations to a minimum.
- Explore Scientific 102 mm Achromatic Refractor OTA
- Cradle Rings with Handle, Universal V Series Saddle Plate
- 10:1 Two-Speed 2" Crayford Focuser
- 8x50 Straight Finder Scope
- 2" 99% Reflectivity Mirror Diagonal
- 1.25" Adapter
- Twilight I Alt-Az Mount
- Heavy-duty steel tripod
Dimensions & Specifications
Telescope Series: Explore AR Air-Spaced Doublet
Telescope Optical Design: Refractor
Refractor Design: Achromat
Number of Refractor Elements: 2
Telescope Aperture: 4"
Telescope Focal Ratio: f/6.5
Telescope Focal Length: 633 mm
Optical Coatings: Explore EMD
Secondary Mirror Central Obstruction: N/A
Limiting Stellar Magnitude: 12.5
Telescope Tripod Included: Yes
Diagonal Included: Yes - 2" Star Diagonal
Finder Included: Yes - 8 x 50 Finder Included
Focuser Style: Crayford/Crayford Style
Focuser Size: 2"
Focuser Speed: Dual Speed
Telescope Mount Type: Alt-Azimuth
Telescope Mount Weight Capacity: 15 lb.
Telescope OTA Length: 25.5"
Telescope OTA Weight: 10.4 lbs
We stand behind all the products we sell, and your satisfaction is our top priority. If you're not satisfied with the quality of your purchase, simply send the item back to us in its original packaging within 30 days of its delivery.
Limited Warranty is one year, which converts to the Explore STAR Transferrable Extended Life of the Product Warranty when product is registered within 60 days of purchase.
Return & Exchange Policy
At our site, returns are easy! You may return new, unused, and resalable items for a refund or exchange. Simply ensure that the item is returned in its original product packaging within 30 days of delivery.
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