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Explore Scientific Telescopes
YOU ARE HERE >> HOME | EXPLORE SCIENTIFIC | ES AR102 Doublet

EXPLORE SCIENTIFIC AR102 Air-Spaced Doublet Refractor
D=102 / F=663mm Doublet Achromatic Refractor
52500 + 18% GST
Explore Scientific AR102 Lens
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Explore Scientific AR102 Lens
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Explore Scientific Finderscope Explore Scientific Finderscope
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Explore Scientific Mirror Star Diagonal Explore Scientific AR102 Lens
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EXPLORE SCIENTIFIC AR102 Air-Spaced Doublet
The latest addition to the Air-Spaced Doublet AR Series is the very portable, grab-and-go 102mm!

Like its two larger brothers, the AR127, and the AR152, these are classic air-spaced, crown-and-flint, doublet achromatic refractors with superior-class optical figure, in a short (f/6.5) focal length design. 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% Reflective 2-inch Diagonal Mirror, and an 8x50 Finder Scope. You can be confident that the quality and construction of these telescopes will allow heavy use for many years. 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. 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. Perfect focus is easily achieved with the Explore Scientific Ten-to-One, Two-Speed Focuser 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 AR Series, a two-speed Crayford-style precision focuser with tension adjustment and lock to obtain and hold perfect focus. We think you'll agree that such precision is worth it.
 
Features
  • Optical Design: Air-Spaced Doublet Achromatic Refractor
  • Clear Aperture: 102mm
  • Focal Length: 663mm
  • Focal Ratio: f/6.5
  • Resolving Power: 1.14 arc seconds
  • Coatings: Fully Multi-Coated
  • Limiting Stellar Magnitude: 12.5
  • Focuser: Two-Speed Crayford-Style, w/ Adjustable Tension and Lock
  • Finder Scope: 8x50 Straight; Adjustable Objective Focus; Dual-Ring, Six-Point, Bracket w/Quick Release Shoe
  • Cradle/Saddle Plate: Dual Ring Style - Fits Explore Scientific Mounts; and Other Third Party Mounts that Accept Vixen-Type Rail
  • Tube Diameter: 3.96" - 100.7mm
  • Dew Shield Diameter: 7.5" - 100.7mm
  • Tube Length (eyepiece holder to end of dew shield: 25.5" - 648mm
  • Tube Construction: Aluminum; Stainless Steel
  • Optical Tube Assembly Weight (with all standard accessories): 11.3 lbs - 4.67 kg
  • Shipping Box Dimensions: 40 x 10 x 10 inches; 101.6 x 25.4 x 25.4 cm
  • Shipping Weight: 17 lbs; 7.7 kg
 
Scope of Delivery
  • Removable Dew Shield
  • Front and Rear Dust Covers
  • Cradle Rings with Handle and Univsersal Saddle Plate
  • Two-Speed Focuser 2.0" I.D.
  • 8x50 Finder Scope with Six Point Adjustable Bracket
  • 2.0" 99% Reflective Mirror Diagonal with 1.25 " Adapter
 
TECHNICAL DATA
Field of application
  • Deep Sky Observation
  • Deep Sky Photography
  • Lunar observation
  • Lunar photography
  • Planetary observation
  • Focus Group Beginners
    Product Family Refractor Telescope

    OPTICAL SPECIFICATIONS
    Optical design Achromatic Refractor
    Maximum recommended magnification 200
    Mirror/Lens diam. 102 mm
    Focal length 663 mm
    Angular resolution 1.3 arc seconds
    Type of coating Enhanced Multilayer Desposition (EMD)
    Finderscope 8 x 50 mm
    Width of image field width 24x36 mm receiver 3 degrees
    Height of image field width 24x36 mm receiver 2 degrees
    Mount Type Optics without Mount

    GENERAL TECHNICAL DATA
    Material OTA Aluminium
    Transportability very good
    Focusing system 2" Crayford-Focuser with 10:1 Reducer
    Colour white
    Dust protection caps Dust protection caps for front lens and eyepiece holder

    DIMENSIONS & WEIGHTS
    Net weight OTA (incl. accessories) 4.7 kg
    Tube diameter 101 mm
    Eyepiece Barrel Diameter 50.8 mm
     
    WARNING
    Buy 1000 OAKS Solarite Safety Film
     
    Instructions for use in ENGLISH
    Download Introduction Manual in .PDF format
    Download Instruction Manual in .PDF format
     
    The following items are FREE with the telescope listed above. [ Subject To Availability ]
     
    Suggested Accessories with this Telescope
      SOLAR FILTER
    • R-G Solar filter (USA) provide more pleasing and natural Yellow-Orange image of the Sun . . . . Rs 2100
      EYEPIECES (Super Premium Plossl for GSO)
    • 40mm Plossl Eyepiece 1.25" . . . . Rs. 2820
    • 32 mm Plossl Eyepiece 1.25" . . . . Rs 2640
    • 25 mm Plossl Eyepiece 1.25" . . . . Rs. 2550
    • 20 mm Plossl Eyepiece 1.25" . . . . Rs. 2460
    • 15 mm Plossl Eyepiece 1.25" . . . . Rs. 2280
    • 12 mm Plossl Eyepiece 1.25" . . . . Rs. 2100
    • 6 mm Plossl Eyepiece 1.25" . . . . Rs. 2100
    • 4 mm Plossl Eyepiece 1.25" . . . . Rs. 2100
    • GSO SuperView 15mm 1.25" Wide Angle Eyepiece . . . . Rs. 3000
    • GSO SuperView 20mm 1.15" Wide Angle Eyepiece . . . . Rs. 3000
    • GSO SuperView 30mm 2 " Wide Angle Eyepiece . . . . Rs. 4800
    • GSO SuperView 42mm 2" Wide Angle Eyepiece . . . . Rs. 4800
    • GSO SuperView 50mm 2" Wide Angle Eyepiece . . . . Rs. 4800
      BARLOW
    • GSO 2x ED-Barlow-Lens (Multicoated) . . . . Rs.4800
    • GSO 2X Achromatic BARLOW LENS- fully multicoated 1.25" . . . . Rs. 1470
    • ED 3X Barlow Lens GSO 1.25" . . . . Rs. 2640
    • 3 Elememt 2.5x Barlow GSO 1.25"  . . . . Rs. 2370
    • 3 Elememt 5x Barlow GSO . . . . Rs. 2820
      CAMERA ATTACHMENTS
    • T-RING Nikon . . . . Rs. 930
    • T-RING Canon . . . . Rs 930
    • T Adapter 1.25" . . . . Rs. 750
    • Super ACHROMATIC (MultiCoated /High Colour corrected) 2X BARLOW 1.25" OD, 2 ELEMENT LENS with T-thread for direct camera attachment /with Brass compression ring / GSO. . . . Rs. 3,000
    • 2 inch T-2 Camera Adapter . . . . Rs 1650
    • Eyepiece Projection Camera Adapter . . . . Rs. 2100
    • Universal Cell Phone Adapter . . . . Rs. 1560
    • GSO 1.25" 32mm Camera Projection Lens (CPL) eyepiece ... Rs. 3,900
    • GSO 1.25" 40mm Camera Projection Lens (CPL) eyepiece ... Rs.4,080
    • GSO 2" 30mm Camera Projection Lens (CSV) eyepiece ... Rs.5,700
    • GSO 2" 42mm Camera Projection Lens (CSV) eyepiece ... Rs.5,700

    • CARRY BAG
    • Padded Carry Bag for Explore Scientific 102mm AR Doublet . . . . Rs. 2100 [ On Order ]
    • GSO....0.5X Focal Reducer 1.25" with 25mm extension tube ....Rs 1560
    • GSO.....0.5x Focal Reducer 2 inch ....Rs 2100
    • GSO Planet View Filters each . . . . Rs 660
     
     
     
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