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Category

1. Telescopes (31)
2. Eyepieces & Barlows (27)
3. Filters For Telescopes (10)
4. Mounts For Telescopes (10)
5. CCD & Photographic (27)
6. Telescope Accessories (12)
7. More (34)
8. Products (120)

Aperture

1. 3" & Under (4)
2. 3.1" - 4"  (7)
3. 4.1" - 5"  (3)
4. 5.1" - 6"  (4)
5. 6.1" - 7"  (1)
6. 7.1" - 8"  (3)
7. 8.1" - 10"  (4)
8. 10.1" - 12"  (2)
9. 12.1" - 14"  (1)
10. 14.1" - 16"  (1)
11. 16.1" & Up  (1)
12. 116mm & Up (1)

Autoguiders, Guidescopes, Guiding Accessories

1. Guide Scopes  (1)

Barlow Magnification

1. 2x (1)

Barrel size for eyepieces and barlows

1. 1.25" (21)
2. 1.25"/2" (5)
3. 2" (2)

CCD and Photographic

1. Camera Adapters (2)
2. Extension/Spacer Rings/Tubes (5)
3. Eyepiece Projection Photography (1)
4. Field Flatteners (3)
5. Focal Reducer (1)
6. Focal Reducer and Field Flattener Combos (16)
7. Illuminated Reticle Eyepieces (1)
8. Prime Focus Photography (1)

Dovetails That Fit Or That Are Made By

1. Astro-Tech (6)
2. Universal (2)

Dovetail Length

1. 13" and Longer (1)
2. 4.1" - 7.9" (1)
3. 8" - 12.9" (1)

Dovetail Plate Type

1. Dovetail Accessory Adapter (1)
2. Dovetails (Male)  (3)
3. Guidescope Rings (1)

Dovetail Width

1. 1.7" (V Series/Vixen)  (3)
2. 4" (D Series/Losmandy)  (3)

Eyepiece Field of View Range

1. up to 50° (1)
2. 51°-60° (10)
3. 61°-70° (4)
4. 71°-82° (6)
5. 83°-100° (4)
6. 101° and Up (2)

Eyepiece Focal Length

1. 3.1mm-5mm (6)
2. 5.1mm-7mm (3)
3. 7.1mm-10mm (3)
4. 10.1mm-13mm (4)
5. 13.1mm-16mm (3)
6. 16.1mm-19mm (2)
7. 19.1mm-21mm (1)
8. 21.1mm-24mm (1)
9. 24.1mm-27mm (2)
10. 27.1mm and Up (1)
11. Zoom (1)

Eyepiece Series

1. Astro-Tech Paradigm Dual ED (7)
2. Astro-Tech PF (5)
3. Astro-Tech UWA (6)
4. Astro-Tech Value Line Plössls (1)
5. Astro-Tech XWA (6)
6. Astro-Tech Zoom (1)

Eye Relief

1. 10mm - 12mm  (7)
2. 13mm - 15mm  (12)
3. 16mm - 18mm  (3)
4. 19mm & Up  (3)
5. 9mm or Less  (1)
6. Variable - Zoom Eyepiece  (1)

Filter Sizes

1. 1.25"  (9)
2. 2"  (1)

Finderscope Types

1. Adapters & Accessories  (3)
2. Finder Brackets, Rings & Bases  (3)
3. Illuminated (2)
4. Illuminators  (1)
5. Image Erecting (1)
6. Reflex Finders  (1)
7. Right Angle Optical Finders  (1)
8. Straight-Through Optical Finders  (1)

Focal Ratio

1. f/10.1 - f/14.0 (1)
2. f/2.1 - f/4.0  (4)
3. f/4.1 - f/6.0  (7)
4. f/6.1 - f/8.0  (18)
5. f/8.1 - f/10.0  (1)

Optical Tube Rings and Tube Holders

1. 4.1" - 6" (1)
2. 91mm to 114mm (1)
3. Up to 4" (1)

Spotting Scope Accessories

1. Eyepieces (1)

Spotting Scope Manufacturers

1. Pentax (1)

Star Diagonal/Image Erecting Diagonal Size

1. 1.25" (2)
2. 2" (2)

Telescopes

1. Optical Tube (31)

Telescope Collimating Tools

1. Cheshire/Light Tubes (1)
2. Laser Collimators  (1)

Telescope Mount Type

1. No Mount Optical Tube Only (30)

Telescope Series

1. Astro-Tech CFT Refractor (1)
2. Astro-Tech ED Refractors (5)
3. Astro-Tech EDL Refractors (4)
4. Astro-Tech EDP Refractor (1)
5. Astro-Tech EDT Refractors (5)
6. Astro-Tech Imaging Newtonians (4)
7. Astro-Tech Ritchey-Chretiens (11)

Telescope Type

1. Astrograph Telescopes (12)
2. Cassegrain Telescopes  (1)
3. Imaging Newtonian (4)
4. Optical Tube Assemblies (18)
5. Reflector Telescopes  (4)
6. Refractor Telescopes (16)
7. Ritchey-Chretien Telescopes (10)

Tripod, Pier, and Mount Accessories

1. Mounting Hardware  (3)
2. Vibration Suppression Pads  (1)

Types Of Barlows

1. Barlow (1)

Types Of Filters

1. Color  (8)
2. Light Pollution Reduction  (1)
3. Moon/ND/Polarizing  (2)
4. UHC (1)
5. Visual Filters (9)

Visual Accessories

1. Diagonals (4)
2. Eyepiece Adapters & Extension Tubes (1)
3. Finders & Accessories  (1)

Price

1. $0.00 - $9,999.99 (119)
2. $10,000.00 and above (1)