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  • Original price $717.54 USD
    Original price $717.54 USD - Original price $717.54 USD
    Original price $717.54 USD
    Current price $678.21 USD
    $678.21 USD - $678.21 USD
    Current price $678.21 USD

    Antlia ALP-T Dualband 5nm Ha/OIII and SII/Hb Filter Set - 2"

    ANT-ALP-T-SET
    1 in stock

    Original price $717.54 USD
    Original price $717.54 USD - Original price $717.54 USD
    Original price $717.54 USD
    Current price $678.21 USD
    $678.21 USD - $678.21 USD
    Current price $678.21 USD
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  • Original price $343.84 USD
    Original price $343.84 USD - Original price $343.84 USD
    Original price $343.84 USD
    Current price $275.36 USD
    $275.36 USD - $275.36 USD
    Current price $275.36 USD

    Antlia ALP-T Dualband 5nm SII/Hb Filter - USED

    ANT-ALP-T-SII-HB-2-USED
    Only 1 left!

    Used, but in perfect condition. The ALP-T dual band 5nm SII&Hb filter is a dual line-pass filter, which lets the deep red Sulfur-II line and t...

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    Original price $343.84 USD
    Original price $343.84 USD - Original price $343.84 USD
    Original price $343.84 USD
    Current price $275.36 USD
    $275.36 USD - $275.36 USD
    Current price $275.36 USD
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  • Original price $795.00 USD
    Original price $795.00 USD - Original price $795.00 USD
    Original price $795.00 USD
    Current price $695.00 USD
    $695.00 USD - $695.00 USD
    Current price $695.00 USD

    Askar SQA55 55mm f/4.8 Quintuplet APO

    ASK-SQA55

    Preorder promotional price! Estimate availability mid to late August. Sharp Petzval Optical Design The lens features a quintuplet air-spaced d...

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    Original price $795.00 USD
    Original price $795.00 USD - Original price $795.00 USD
    Original price $795.00 USD
    Current price $695.00 USD
    $695.00 USD - $695.00 USD
    Current price $695.00 USD
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  • Original price $484.00 USD - Original price $484.00 USD
    Original price
    $484.00 USD
    $484.00 USD - $484.00 USD
    Current price $484.00 USD

    Astrodon H-alpha Filter - 5nm

    DON-HA5_31R
    Only 1 left!

    H-α (hydrogen-alpha) at 656 nm (nanometers) is deep red in color and the most popular narrowband filter. Hydrogen is ubiquitous in the cosmos and i...

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    Original price $484.00 USD - Original price $484.00 USD
    Original price
    $484.00 USD
    $484.00 USD - $484.00 USD
    Current price $484.00 USD
  • Original price $484.00 USD
    Original price $484.00 USD - Original price $484.00 USD
    Original price $484.00 USD
    Current price $425.00 USD
    $425.00 USD - $425.00 USD
    Current price $425.00 USD

    Astrodon SII Filter - 5nm

    DON-SII5_31R
    Only 1 left!

    If you want the look of Hubble Space Telescope (HST) images, such as the famous “Pillars of Creation” (the Eagle Nebula, Messier 16), then the next...

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    Original price $484.00 USD
    Original price $484.00 USD - Original price $484.00 USD
    Original price $484.00 USD
    Current price $425.00 USD
    $425.00 USD - $425.00 USD
    Current price $425.00 USD
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  • Original price $282.65 USD
    Original price $282.65 USD - Original price $282.65 USD
    Original price $282.65 USD
    Current price $239.67 USD
    $239.67 USD - $239.67 USD
    Current price $239.67 USD

    Baader 4nm 1.25" Ultra-Narrowband OIII Filter - CMOS-Optimized (USED)

    BAA-2961400-125-USED
    Only 1 left!

    In perfect condition, used Baader H-alpha / O-III / S-II Ultra-Narrowband (Narrowband) filter set - Premium Grade 3.5 / 4 nm half width (to harmo...

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    Original price $282.65 USD
    Original price $282.65 USD - Original price $282.65 USD
    Original price $282.65 USD
    Current price $239.67 USD
    $239.67 USD - $239.67 USD
    Current price $239.67 USD
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  • Original price $193.04 USD
    Original price $193.04 USD - Original price $193.04 USD
    Original price $193.04 USD
    Current price $182.12 USD
    $182.12 USD - $182.12 USD
    Current price $182.12 USD

    Baader 6.5nm 36mm H-alpha Filter - CMOS-Optimized (OPEN BOX)

    BAA-2961100-36-OPENBOX
    Only 1 left!

    In perfect condition, open box Baader H-alpha / O-III / S-II Narrowband Filter Set - Precision Grade 6.5 nm FWHM, recommended for optical systems...

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    Original price $193.04 USD
    Original price $193.04 USD - Original price $193.04 USD
    Original price $193.04 USD
    Current price $182.12 USD
    $182.12 USD - $182.12 USD
    Current price $182.12 USD
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  • Original price $305.96 USD
    Original price $305.96 USD - Original price $305.96 USD
    Original price $305.96 USD
    Current price $211.26 USD
    $211.26 USD - $211.26 USD
    Current price $211.26 USD

    Baader CCD LRGB 31mm Unmounted Filter Set (OPEN BOX)

    BAA-2459474-OPENBOX
    Only 1 left!

    In perfect condition, open box Filter size 31 mm - round, unmounted - filter thickness 2 mm Set of L-R-G-B filters High-quality anti-reflective ...

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    Original price $305.96 USD
    Original price $305.96 USD - Original price $305.96 USD
    Original price $305.96 USD
    Current price $211.26 USD
    $211.26 USD - $211.26 USD
    Current price $211.26 USD
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  • Original price $346.02 USD
    Original price $346.02 USD - Original price $346.02 USD
    Original price $346.02 USD
    Current price $327.81 USD
    $327.81 USD - $327.81 USD
    Current price $327.81 USD

    Baader LRGB 36mm Unmounted Filter Set - CMOS-Optimized (OPEN BOX)

    BAA-2961610-OPENBOX
    Only 1 left!

    In perfect condition, open box New CMOS-optimized L-RGB filters from Baader Planetarium with Reflex-Blocker™ and Life-Coat™. Baader CMOS RGB Bandp...

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    Original price $346.02 USD
    Original price $346.02 USD - Original price $346.02 USD
    Original price $346.02 USD
    Current price $327.81 USD
    $327.81 USD - $327.81 USD
    Current price $327.81 USD
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  • Original price $3,699.00 USD
    Original price $3,699.00 USD - Original price $3,699.00 USD
    Original price $3,699.00 USD
    Current price $3,099.00 USD
    $3,099.00 USD - $3,099.00 USD
    Current price $3,099.00 USD

    Celestron Advanced VX 11" SCT

    CEL-12067

    Features 11" (280mm) f/10 Schmidt-Cassegrain includes StarBright XLT coatings for better light transmission The most compact and portable of Celest...

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    Original price $3,699.00 USD
    Original price $3,699.00 USD - Original price $3,699.00 USD
    Original price $3,699.00 USD
    Current price $3,099.00 USD
    $3,099.00 USD - $3,099.00 USD
    Current price $3,099.00 USD
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  • Original price $1,329.00 USD
    Original price $1,329.00 USD - Original price $1,329.00 USD
    Original price $1,329.00 USD
    Current price $1,099.00 USD
    $1,099.00 USD - $1,099.00 USD
    Current price $1,099.00 USD

    Celestron Advanced VX 6" Newtonian Telescope

    CEL-32054

    Features 6" (150mm) f/5 optical design gives excellent wide field views Parabolic primary mirror minimizes spherical aberration to produce a better...

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    Original price $1,329.00 USD
    Original price $1,329.00 USD - Original price $1,329.00 USD
    Original price $1,329.00 USD
    Current price $1,099.00 USD
    $1,099.00 USD - $1,099.00 USD
    Current price $1,099.00 USD
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  • Original price $1,899.00 USD
    Original price $1,899.00 USD - Original price $1,899.00 USD
    Original price $1,899.00 USD
    Current price $1,599.00 USD
    $1,599.00 USD - $1,599.00 USD
    Current price $1,599.00 USD

    Celestron Advanced VX 6" Refractor Telescope

    CEL-22020

    Features 6" (150mm) f/8 objective lens is perfect for high contrast planetary views The most compact and portable of Celestron’s German equatorial ...

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    Original price $1,899.00 USD
    Original price $1,899.00 USD - Original price $1,899.00 USD
    Original price $1,899.00 USD
    Current price $1,599.00 USD
    $1,599.00 USD - $1,599.00 USD
    Current price $1,599.00 USD
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  • Original price $1,749.00 USD
    Original price $1,749.00 USD - Original price $1,749.00 USD
    Original price $1,749.00 USD
    Current price $1,479.00 USD
    $1,479.00 USD - $1,479.00 USD
    Current price $1,479.00 USD

    Celestron Advanced VX 6" SCT

    CEL-12079

    Features 6" (150mm) f/10 Schmidt-Cassegrain includes StarBright XLT coatings for better light transmission The most compact and portable of Celestr...

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    Original price $1,749.00 USD
    Original price $1,749.00 USD - Original price $1,749.00 USD
    Original price $1,749.00 USD
    Current price $1,479.00 USD
    $1,479.00 USD - $1,479.00 USD
    Current price $1,479.00 USD
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  • Original price $2,599.00 USD
    Original price $2,599.00 USD - Original price $2,599.00 USD
    Original price $2,599.00 USD
    Current price $2,199.00 USD
    $2,199.00 USD - $2,199.00 USD
    Current price $2,199.00 USD

    Celestron Advanced VX 700 Maksutov Cassegrain Telescope

    CEL-12035

    Features 700 Maksutov-Cassegrain telescope with f/15 focal ratio provides high contrast views of the planets and lunar landscapes, perfect for seri...

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    Original price $2,599.00 USD
    Original price $2,599.00 USD - Original price $2,599.00 USD
    Original price $2,599.00 USD
    Current price $2,199.00 USD
    $2,199.00 USD - $2,199.00 USD
    Current price $2,199.00 USD
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  • Original price $2,799.00 USD
    Original price $2,799.00 USD - Original price $2,799.00 USD
    Original price $2,799.00 USD
    Current price $2,349.00 USD
    $2,349.00 USD - $2,349.00 USD
    Current price $2,349.00 USD

    Celestron Advanced VX 8" EdgeHD Telescope

    CEL-12031

    Features 8" (203.2mm) f/10 EdgeHD includes StarBright XLT coatings for better light transmission EdgeHD optical design fully corrects for coma and ...

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    Original price $2,799.00 USD
    Original price $2,799.00 USD - Original price $2,799.00 USD
    Original price $2,799.00 USD
    Current price $2,349.00 USD
    $2,349.00 USD - $2,349.00 USD
    Current price $2,349.00 USD
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  • Original price $1,629.00 USD
    Original price $1,629.00 USD - Original price $1,629.00 USD
    Original price $1,629.00 USD
    Current price $1,379.00 USD
    $1,379.00 USD - $1,379.00 USD
    Current price $1,379.00 USD

    Celestron Advanced VX 8" Newtonian Telescope

    CEL-32062

    Features 8" (200mm) f/5 optical design provides excellent wide field views Parabolic primary mirror minimizes spherical aberration to produce a bet...

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    Original price $1,629.00 USD
    Original price $1,629.00 USD - Original price $1,629.00 USD
    Original price $1,629.00 USD
    Current price $1,379.00 USD
    $1,379.00 USD - $1,379.00 USD
    Current price $1,379.00 USD
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  • Original price $2,299.00 USD
    Original price $2,299.00 USD - Original price $2,299.00 USD
    Original price $2,299.00 USD
    Current price $1,899.00 USD
    $1,899.00 USD - $1,899.00 USD
    Current price $1,899.00 USD

    Celestron Advanced VX 8" SCT

    CEL-12026

    Features 8" (203.2mm) f/10 Schmidt-Cassegrain includes StarBright XLT coatings for better light transmission The most compact and portable of Celes...

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    Original price $2,299.00 USD
    Original price $2,299.00 USD - Original price $2,299.00 USD
    Original price $2,299.00 USD
    Current price $1,899.00 USD
    $1,899.00 USD - $1,899.00 USD
    Current price $1,899.00 USD
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  • Original price $2,999.00 USD
    Original price $2,999.00 USD - Original price $2,999.00 USD
    Original price $2,999.00 USD
    Current price $2,499.00 USD
    $2,499.00 USD - $2,499.00 USD
    Current price $2,499.00 USD

    Celestron Advanced VX 800 RASA Telescope

    CEL-12032

    Features Rowe-Ackermann Schmidt Optical Design – 8" f/2.2 flat field imaging system with rare-earth glass for outstanding images free of optical d...

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    Original price $2,999.00 USD
    Original price $2,999.00 USD - Original price $2,999.00 USD
    Original price $2,999.00 USD
    Current price $2,499.00 USD
    $2,499.00 USD - $2,499.00 USD
    Current price $2,499.00 USD
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  • Original price $3,679.00 USD
    Original price $3,679.00 USD - Original price $3,679.00 USD
    Original price $3,679.00 USD
    Current price $3,099.00 USD
    $3,099.00 USD - $3,099.00 USD
    Current price $3,099.00 USD

    Celestron Advanced VX 9.25" EdgeHD Telescope

    CEL-12033

    Features 9.25" (235mm) f/10 EdgeHD optical tube fully corrects for coma and field curvature, delivering a truly flat field Native f/10 focal ratio...

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    Original price $3,679.00 USD
    Original price $3,679.00 USD - Original price $3,679.00 USD
    Original price $3,679.00 USD
    Current price $3,099.00 USD
    $3,099.00 USD - $3,099.00 USD
    Current price $3,099.00 USD
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