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Manufacturer

1. Astrodon (23)
2. Astronomik (12)
3. AstroOptic (1)
4. Atik Cameras (2)
5. Baader Planetarium (42)
6. Celestron (11)
7. Chroma Technology (23)
8. Custom Scientific (9)
9. DGM Optics (5)
10. Explore Scientific (4)
11. IDAS Filters (1)
12. Lumicon International (6)
13. Meade (5)
14. Opticstar (1)
15. Optolong (2)
16. Orion (16)
17. Shelyak Instruments (2)
18. Stellarvue (2)
19. TeleVue (2)
20. Thousand Oaks Optical (4)
21. ZWO (8)

Body/ Kit

1. Body (9)
2. Body + Kit (1)
3. Body + Lens (4)
4. Body + Lens + Kit (4)

Eyepiece Focal Length

1. 0mm - 5mm (2)
2. 10.1mm - 20mm (14)
3. 20.1mm - 30mm (13)
4. 30.1mm - 40mm (6)
5. 5.1mm - 10mm (3)

For Filters Of What Size?

1. 1.25" Mounted (21)
2. 2" (50.8mm) Square Unmounted (1)
3. 28mm Unmounted (1)
4. 36mm Unmounted (3)

Filter Slots Available

1. 10 (11)
2. 11 (1)
3. 20 (1)
4. 5 (21)
5. 7 (2)
6. 8 (2)

Non-Solar Filter Size & Mounting

1. 1.25" - Mounted (139)
2. 2" - Mounted (4)
3. 27mm - Unmounted (4)
4. 31mm - Unmounted (1)
5. 36mm - Unmounted (2)
6. C Thread (1)

Filter Type

1. Clear/Luminance (5)
2. Color Correcting/ Violet Reduction (1)
3. Infrared (for UBVRI) (2)
4. IR Cut (1)
5. Methane (2)
6. Nitrogen II (1)
7. Red (for UBVRI) (1)
8. RGB Color Filters (includes LRGB) (3)
9. Solar Continuum (1)
10. UBVRI Filter Set (7)
11. UHC (3)
12. Ultra Violet (for UBVRI) (1)
13. Violet Reduction (2)
14. Color (14)
15. H-Alpha (Non-Solar) (12)
16. H-Beta (4)
17. Moon/ Neutral Density (11)
18. Nebula (3)
19. Oxygen III (19)
20. Sky Glow/ City Light Suppression (7)
21. Sulfur II (8)
22. Variable Polarizer (2)

Barrel Or Connection Size

1. 1.25" Barrel (5)
2. 1.25"/ 2" Variable (4)
3. 2" Barrel (12)

Eyepiece Design

1. Ethos (3)
2. Wide Angle (22)

Eyepiece Eye Relief

1. Long: 16mm or More (24)
2. Moderate: 11mm - 15mm (13)

Filter Wheel Control

1. Motorized (2)

Style of Filter Holder

1. Wheel (3)

Wratten Number

1. 11 (Yellow-Green) (2)
2. 12 (Deep Yellow) (1)
3. 23A (Light Red) (1)
4. 47 (Blue Tricolor) (2)
5. 58 (Green Tricolor) (1)
6. 80A (Blue) (1)

Mount/Head Design

1. None - Optical Tube Only (2)

Eyepiece Special Feature

1. Argon Purged (3)
2. Fog Proof (15)
3. Nitrogen Purged (15)
4. Waterproof (18)

Product Series

1. Astrodon Narrowband Filters (5)
2. Astrodon Near-Infrared Tricolor Filters (1)
3. Astrodon Photometrics - Sloan Filters (7)
4. Astrodon Photometrics - UVBRcIc Filters (2)
5. Astrodon Tru-Balance I-Series Filters (1)
6. Astronomik CLS Filters (1)
7. Astronomik LRGB TYP II Filters (1)
8. Astronomik OIII CCD Filters (2)
9. Astronomik ProPlanet 642 BP IR Filters (1)
10. Baader LRGB and LRGBC Filters (2)
11. Baader Polarizing Filters (Ideal for Hershel Wedge) (1)
12. Baader Solar Continuum Filters (1)
13. Custom Scientific UBVRI Filters (4)
14. Meade 4000 Series Filters (1)
15. TeleVue Bandmate Mars Filters (1)
16. TeleVue Bandmate OIII Filters (1)
17. TO LP Visual Filters (4)

Price

Range : $  -  $