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Category

1. Telescopes (32)
2. Eyepieces & Barlows (24)
3. Filters For Telescopes (10)
4. Mounts For Telescopes (8)
5. CCD & Photographic (30)
6. Telescope Accessories (11)
7. More (11)
8. Products (118)

Aperture

1. 3" & Under (4)
2. 3.1" - 4"  (7)
3. 4.1" - 5"  (4)
4. 5.1" - 6"  (3)
5. 6.1" - 7"  (1)
6. 7.1" - 8"  (4)
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)

Barrel size for eyepieces and barlows

1. 1.25" (19)
2. 1.25"/2" (4)
3. 2" (2)

CCD and Photographic

1. Camera Adapters (2)
2. Extension/Spacer Rings/Tubes (8)
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 (5)
2. Universal (1)

Dovetail Length

1. 4.1" - 7.9" (1)
2. 8" - 12.9" (1)

Dovetail Plate Type

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

Dovetail Width

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

Eyepiece Field of View Range

1. up to 50° (1)
2. 51°-60° (9)
3. 61°-70° (4)
4. 71°-82° (6)
5. 83°-100° (4)
6. 101° and Up (1)

Eyepiece Focal Length

1. 3.1mm-5mm (5)
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)

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 (5)

Eye Relief

1. 10mm - 12mm  (7)
2. 13mm - 15mm  (11)
3. 16mm - 18mm  (3)
4. 19mm & Up  (3)
5. 9mm or Less  (1)

Filter Sizes

1. 1.25"  (9)
2. 2"  (1)

Finderscope Types

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

Focal Ratio

1. f/10.1 - f/14.0 (2)
2. f/2.1 - f/4.0  (4)
3. f/4.1 - f/6.0  (8)
4. f/6.1 - f/8.0  (17)
5. f/8.1 - f/10.0  (1)

Focusing Controls, Adapters, and Accessories

1. Focuser Adapter (2)

Optical Tube Rings and Tube Holders

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

Star Diagonal/Image Erecting Diagonal Size

1. 1.25" (3)
2. 2" (2)

Telescopes

1. Optical Tube (32)

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 EDA Refractor (1)
4. Astro-Tech EDL Refractors (3)
5. Astro-Tech EDP Refractor (1)
6. Astro-Tech EDT Refractors (5)
7. Astro-Tech Imaging Newtonians (4)
8. Astro-Tech Ritchey-Chretiens (12)

Telescope Type

1. Astrograph Telescopes (12)
2. Cassegrain Telescopes  (2)
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  (2)
2. Vibration Suppression Pads  (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 (3)
3. Finders & Accessories  (1)

Price

1. $0.00 - $9,999.99 (117)
2. $10,000.00 and above (1)