Showing 2393–2444 of 3223 results

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Refractor Telescope

RedCat 51mm II f/4.9 APO Ix William Optics

Original price was: $ 865,00.Current price is: $ 216,25.
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Refractor Telescope

RedCat 51mm II-U f/4.9 APO Ix William Optics

Original price was: $ 865,00.Current price is: $ 216,25.
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Refractor Telescope

RedCat 51mm WIFD II f/4.9 APO Ix William Optics

Original price was: $ 898,00.Current price is: $ 224,50.
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Refractor Telescope

RedCat 61 WIFD APO 300mm f/4.9 William Optics

Original price was: $ 1.498,00.Current price is: $ 374,50.
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Refractor Telescope

RedCat 71 APO 350mm f/4.9 William Optics

Original price was: $ 1.698,00.Current price is: $ 424,50.
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Refractor Telescope

RedCat 71mm WIFD f/4.9 William Optics

Original price was: $ 1.798,00.Current price is: $ 449,50.
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Astrophotography Accessories

Reducer 0.66x CDK12.5 /14/ 17 Planewave

Original price was: $ 1.400,00.Current price is: $ 350,00.
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Astrophotography Accessories

Reducer 0.66x CDK20 / CDK24 Planewave

Original price was: $ 1.400,00.Current price is: $ 350,00.
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Telescope Accessories

Reducer 0.7x CDK700 Planewave

Original price was: $ 7.500,00.Current price is: $ 1.875,00.
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Astrophotography Accessories

Reducer and Field Flattener for Mewlon Telescopes (TAK70581) Takahashi

Original price was: $ 530,00.Current price is: $ 159,00.
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Astrophotography Accessories

Reducer Flattener for 3″ focuser (SFFR.72-130-3FT) Stellarvue

Original price was: $ 649,00.Current price is: $ 194,70.
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Astrophotography Accessories

Reducer Flattener for SV70T (SFFR-70APO) Stellarvue

Original price was: $ 269,00.Current price is: $ 107,60.
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Astrophotography Accessories

Reducer Lens .7X – EdgeHD 1100 (94241) Celestron

Original price was: $ 839,00.Current price is: $ 209,75.
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Astrophotography Accessories

Reducer Lens .7X – EdgeHD 1400 (94240) Celestron

Original price was: $ 839,00.Current price is: $ 209,75.
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Astrophotography Accessories

Reducer Lens .7X – EdgeHD 800 (94242) Celestron

Original price was: $ 409,00.Current price is: $ 122,70.
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Astrophotography Accessories

Reducer Lens .7x – EdgeHD 925 (94245) Celestron

Original price was: $ 429,00.Current price is: $ 128,70.
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Astrophotography Accessories

Reducer/Corrector (.85x) for Evostar 100 (S20201) Sky-Watcher USA

Original price was: $ 380,00.Current price is: $ 114,00.
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Astrophotography Accessories

Reducer/Corrector (.85x) for Evostar 120 (S20202) Sky-Watcher USA

Original price was: $ 395,00.Current price is: $ 118,50.
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Astrophotography Accessories

Reducer/Corrector (.85x) for Evostar 72ED (S20212) Sky-Watcher USA

Original price was: $ 415,00.Current price is: $ 124,50.
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Astrophotography Accessories

Reducer/Flattener for 2.5″ focuser (SFFR.72-130-25) Stellarvue

Original price was: $ 695,00.Current price is: $ 208,50.
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Astrophotography Accessories

Reducer/Flattener for 400-600mm Refractors (TV-85) Tele Vue

Original price was: $ 353,00.Current price is: $ 105,90.
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Astrophotography Accessories

Reducer/Flattener for 800-1000mm Refractors (TV-102 & TV-102iis) Tele Vue

Original price was: $ 390,00.Current price is: $ 117,00.
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Astrophotography Accessories

Reducer/Flattener for f/7 Refractors with 2″ Focuser (SFFR102-2) Stellarvue

Original price was: $ 229,00.Current price is: $ 91,60.
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Astrophotography Accessories

Reducer/Flattener for SV115T with 2.5″ Focuser (SFFR115-25) Stellarvue

Original price was: $ 229,00.Current price is: $ 91,60.
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Astrophotography Accessories

Reducer/Flattener for SV115T with 2″ Focuser (SFFR115-2) Stellarvue

Original price was: $ 195,00.Current price is: $ 78,00.
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Astrophotography Accessories

Reducer/Flattener for SV115T with 3″ Feather Touch Focuser (SFFR115-3FT) Stellarvue

Original price was: $ 239,00.Current price is: $ 95,60.
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Astrophotography Accessories

Reducer/Flattener for SVR102T with 2.5″ Focuser (SFFR102-25) Stellarvue

Original price was: $ 229,00.Current price is: $ 91,60.
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Astrophotography Accessories

Reducer/Flattener for SVR102T with 3″ Feather Touch Focuser (SFFR102-3FT) Stellarvue

Original price was: $ 239,00.Current price is: $ 95,60.
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Astrophotography Accessories

Reducer/Flattener for SVR90T with 2.5″ Focuser (SFFR90-25) Stellarvue

Original price was: $ 229,00.Current price is: $ 91,60.
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Astrophotography Accessories

Reducing-Ring 2″i / T-2a with 1.5mm optical length (BPR2T2-15) Astro-Physics

Original price was: $ 36,00.Current price is: $ 21,60.
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Observing Aids

Reflex Sight Finder Mounting Base Only Telrad

Original price was: $ 8,95.Current price is: $ 5,37.
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Binoculars

Regal ED 10×42 Roof Prism Binoculars (71391) Celestron

Original price was: $ 349,95.Current price is: $ 104,98.
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Binoculars

Regal ED 8×42 Roof Prism Binoculars (71390) Celestron

Original price was: $ 339,95.Current price is: $ 101,98.
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Spotting Scope

Regal M2 100ED Spotting Scope (52306) Celestron

Original price was: $ 999,95.Current price is: $ 249,99.
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Spotting Scope

Regal M2 65ED Spotting Scope (52304) Celestron

Original price was: $ 599,95.Current price is: $ 179,99.
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Spotting Scope

Regal M2 80ED Spotting Scope (52305) Celestron

Original price was: $ 849,95.Current price is: $ 212,49.
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Tripods

Regal Premium Tripod (82052) Celestron

Original price was: $ 199,95.Current price is: $ 79,98.
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Focusing

Remote IN/OUT Keypad Optec

Original price was: $ 95,00.Current price is: $ 47,50.
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Books

Remote Observatories for Amateur Astronomers Springer

Original price was: $ 39,99.Current price is: $ 23,99.
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Mount Accessories

Replacement Assembly for 900/1200 Dovetail Knob (DOVEKBREP) Astro-Physics

Original price was: $ 35,00.Current price is: $ 21,00.
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Mount Accessories

Replacement Base Adapters for M002 Mount Columns Stellarvue

Original price was: $ 35,00.Current price is: $ 21,00.
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Astrophotography Accessories

Replacement Cable for CFW QHY

Original price was: $ 15,95.Current price is: $ 9,57.
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Eyepieces

Reticle Eyepiece 23mm (1.25″) Stellarvue

Original price was: $ 69,00.Current price is: $ 34,50.
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Astrophotography Accessories

Reverse Mounting Ring To 2-inch Nosepiece (17761) Optec

Original price was: $ 75,00.Current price is: $ 37,50.
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Astrophotography Accessories

Reverse Mounting Ring To OPTEC-3000 Dovetail Mount (17760) Optec

Original price was: $ 85,00.Current price is: $ 42,50.
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Astrophotography Accessories

Revolution 150 Degree All-Sky – Wide Angle Lens for Revolution Imagers Revolution

Original price was: $ 17,99.Current price is: $ 10,79.
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Astrophotography Accessories

Revolution Imager: RED shield for 7″ monitor Revolution

Original price was: $ 19,99.Current price is: $ 11,99.
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Cameras

Revolution R2 Imager System Revolution

Original price was: $ 299,00.Current price is: $ 119,60.
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Filters

RGB Type 4 Filters IDAS

Original price was: $ 299,00.Current price is: $ 119,60.
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Astrophotography Accessories

Riccardi Reducer M63 Lunt

Original price was: $ 495,00.Current price is: $ 148,50.
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Astrophotography Accessories

Riccardi Reducer M82 Lunt

Original price was: $ 595,00.Current price is: $ 178,50.
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Finders

Rigel QuikFinder with AA battery pack Astrosystems

Original price was: $ 53,00.Current price is: $ 26,50.