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Category

1. Telescopes (31)
2. Eyepieces & Barlows (35)
3. Filters For Telescopes (17)
4. Mounts For Telescopes (9)
5. CCD & Photographic (29)
6. Telescope Accessories (17)
7. More (9)
8. Products (140)

Aperture

1. 3" & Under (4)
2. 3.1" - 4"  (7)
3. 4.1" - 5"  (3)
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)

Barlow Magnification

1. 2x (1)

Barrel size for eyepieces and barlows

1. 1.25" (27)
2. 1.25"/2" (5)
3. 2" (3)

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 (14)
7. Illuminated Reticle Eyepieces (1)
8. Prime Focus Photography (1)
9.  Coma Correctors (1)

Dovetails That Fit Or That Are Made By

1. Astro-Tech (5)
2. Universal (2)

Dovetail Length

1. 4.1" - 7.9" (2)
2. 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° (3)
2. 51°-60° (15)
3. 61°-70° (4)
4. 71°-82° (6)
5. 83°-100° (5)
6. 101° and Up (1)

Eyepiece Focal Length

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

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 (9)
5. Astro-Tech XWA (6)

Eye Relief

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

Filter Sizes

1. 1.25"  (16)
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. Right Angle Optical Finders  (2)

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  (7)
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 (31)

Telescope Collimating Tools

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

Telescope Covers, Light Shrouds, and Cases

1. Telescope Cases (4)

Telescope Mount Type

1. No Mount Optical Tube Only (29)

Telescope Series

1. Astro-Tech ED Refractors (9)
2. Astro-Tech EDT Refractors (6)
3. Astro-Tech Imaging Newtonians (4)
4. Astro-Tech Ritchey-Chretiens (12)

Telescope Type

1. Astrograph Telescopes (11)
2. Cassegrain Telescopes  (2)
3. Imaging Newtonian (4)
4. Optical Tube Assemblies (17)
5. Reflector Telescopes  (4)
6. Refractor Telescopes (15)
7. Ritchey-Chretien Telescopes (10)

Tripod, Pier, and Mount Accessories

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

Types Of Barlows

1. Barlow (1)

Types Of Filters

1. Color  (15)
2. Light Pollution Reduction  (1)
3. Moon/ND/Polarizing  (2)
4. UHC (1)
5. Visual Filters (16)

Visual Accessories

1. Coma Corrector (1)
2. Diagonal Adapters & Accessories (1)
3. Diagonals (4)
4. Eyepiece Adapters & Extension Tubes (4)

Price

1. $0.00 - $9,999.99 (139)
2. $10,000.00 and above (1)