Explore Scientific Essential ED102 APO Triplet Refractor
Explore Scientific's Essential ED 102mm Apochromatic Refractor captures even the most fleeting celestial objects, making it a superb asset for astrophotography. Included is a Dual-Speed Rack & Pinion Focuser, delivering optimal focusing capabilities. All optics have been expertly crafted using genuine Hoya extra-low dispersion (ED) Dense Fluor Crown (FCD1) glass to provide views that will impress even the most seasoned observers.
All Explore Scientific Air-Spaced Triplet APO Refractors are diffraction-limited at .25PV or better. Special EMD™ enhanced multi-layer coatings are deposited on all optical surfaces, and the result is bright, high contrast images with virtually no light scatter. Interferometric data on your newly purchased and registered Explore apochromatic refractor is available upon request after 6 months of ownership. Time restrictions apply; please contact Customer Service for more information.
- Explore Scientific 102 mm ED Essential Series Refractor OTA
- Two-Speed Rack & Pinion Focuser
- 2" Star Diagonal with 99% Reflectivity
- Cradle Rings with Handle
- Vixen-style Dovetail
Dimensions & Specifications
Telescope Series: Explore ED Air-Spaced Triplets
Telescope Optical Design: Refractor
Refractor Design: Apochromat (APO)
Number of Refractor Elements: 3
Telescope Aperture: 4"
Telescope Focal Ratio: f/7
Telescope Focal Length: 714mm
Optical Coatings: EMD enhanced multi-layer
Secondary Mirror Central Obstruction: N/A
Limiting Stellar Magnitude: 12.5
Diagonal Included: Yes - 2" Star Diagonal
Focuser Style: Rack & Pinion
Focuser Size: 2"
Focuser Speed: Dual Speed
Telescope OTA Diameter: 4.1" (119mm)
Telescope Dew Shield Diameter: 153mm
Telescope Total Weight: 9.6lb
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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