National Astronaut Day - May 5th

60 products

    You found the Easter Egg! In honor of National Astronaut Day, May 5th get a full 25% off of OSI products not already on sale! Coupon expires May 5th at 23:59 PST.
    AT CHECKOUT, ENTER COUPON CODE:

    Astronaut
    to get the 25% discount.

    60 products
    CASEX8-3 (6795763548313)
    JMI Telescope Carrying Case with 10" Pneumatic Wheels for Celestron New NexStar Evolution 8" scopes with removable fork arm
    Astrodon LRGB Gen2 I-Series Tru-Balance Filters, INDIVIDUAL FILTERS (6795795988633)
    Astrodon LRGB Gen2 E-Series Tru-Balance Filters_comp (6795795988633)
    Astrodon LRGB Gen2 E-Series Tru-Balance Filters, INDIVIDUAL FILTERS
    Farpoint Dovetail Ring Screws, Long 1.5" Length (Set of 6)
    Farpoint Dovetail Ring Screws, Short .5" Length (Set of 6)
    Farpoint Dovetail Ring Screws, Standard 1" Length (Set of 6)
    Farpoint FDUPS Ball Head Camera Adapter
    Dovetail Bar Camera Mount (6834289148057)
    Dovetail Bar Camera Mount (6834289148057)
    Dovetail Bar Camera Mount
    Farpoint 14 Inch Metric Universal Dovetail Plate (6831691464857)
    Farpoint 14 Inch Metric Universal Dovetail Plate (6831691464857)
    Farpoint 14 Inch Metric Universal Dovetail Plate
    Universal D Size, 57.3 Series Dovetail Plate-21.5 inch (6795916968089)
    DSC_8589 (6795916968089)
    Universal D Size, 57.3 Series Dovetail Plate-21.5 inch
    FDSF Product Shot Square (6795863916697)
    FDSF with fusion (6795863916697)
    D size Dovetail Plate, 3" long for Software Bisque TheSky Fusion w/ non-marring clamping bar
    Universal D Size, 57.3 Series Dovetail Plate-14inch (6795841831065)
    Universal D Size, 57.3 Series Dovetail Plate-14inch
    HandleD-FDA Product Shot (6795814895769)
    HandleD-FDA HAnd Shot (6795814895769)
    D-Handle (only) for Farpoint Dovetail Adapter
    Farpoint Vixen Dovetail Plate - Celestron 8 Inch SCT, New Version (6795807129753)
    Farpoint Vixen Dovetail Plate - Celestron 8 Inch SCT (6795807129753)
    Farpoint Vixen Dovetail Plate - Celestron 8 Inch SCT
    Farpoint Vixen Side by Side Connecting Bar (6795806671001)
    Img0224.jpg (6795806671001)
    Farpoint Vixen Side by Side Connecting Bar
    Farpoint 108mm Vixen Dovetail Rings with Dovetail (6795761451161)
    Farpoint 125mm Vixen Dovetail Rings with Dovetail (6795761451161)
    Farpoint 125mm Vixen Dovetail Rings with Dovetail
    FVUPS7 (6795760795801)
    FVUPS7_2 (6795760795801)
    Farpoint 7 Inch Universal Dovetail Plate - Vixen
    FVUPS4 2000x2000 (6795760730265)
    FVUPS4 2000x2000 Shot 2 (6795760730265)
    Farpoint 4 Inch Universal Dovetail Plate - Vixen
    Farpoint 14 Inch Universal Dovetail Plate – Vixen (6795760631961)
    Farpoint 14 Inch Universal Dovetail Plate - Vixen
    Product Shot FVM8-AS (6795760042137)
    Farpoint Vixen Dovetail Plate - Armored Strip - Meade 8 Inch SCT (6795760042137)
    Farpoint Vixen Dovetail Plate - Armored Strip - Meade 8 Inch SCT
    Product Shot FVM8 (6795759976601)
    Farpoint Vixen Dovetail Plate - Meade 8 Inch SCT (6795759976601)
    Farpoint Vixen Dovetail Plate - Meade 8 Inch SCT
    Farpoint Vixen Dovetail Plate - Armored Strip - Meade 7 Inch Mak (6795759845529)
    Farpoint Vixen Dovetail Plate - Armored Strip - Meade 7 Inch Mak (6795759845529)
    Farpoint Vixen Dovetail Plate - Armored Strip - Meade 7 Inch Mak
    Farpoint Vixen Dovetail Plate - Meade 7 Inch Mak (6795759747225)
    Farpoint Vixen Dovetail Plate - Meade 7 Inch Mak (6795759747225)
    Farpoint Vixen Dovetail Plate - Meade 7 Inch Mak
    Farpoint Vixen Dovetail Plate - Armored Strip - Meade 10 Inch SCT (6795759681689)
    Farpoint Vixen Dovetail Plate - Armored Strip - Meade 10 Inch SCT (6795759681689)
    Farpoint Vixen Dovetail Plate - Armored Strip - Meade 10 Inch SCT
    Farpoint Vixen Dovetail Plate - Meade 7 Inch Mak (6795759550617)
    Farpoint Vixen Dovetail Plate - Meade 10 Inch SCT (6795759550617)
    Farpoint Vixen Dovetail Plate - Meade 10 Inch SCT
    Farpoint Vixen Dovetail Plate - Armored Strip - Celestron 9.25 Inch SCT (6795759452313)
    Farpoint Vixen Dovetail Plate - Armored Strip - Celestron 9.25 Inch SCT
    Farpoint Vixen Dovetail Plate - Meade 7 Inch Mak (6795759386777)
    Farpoint Vixen Dovetail Plate - Celestron 9.25 Inch SCT (6795759386777)
    Farpoint Vixen Dovetail Plate - Celestron 9.25 Inch SCT
    Farpoint Vixen Dovetail Plate - Armored Strip - Celestron 9.25 Inch SCT (pre 2008) (6795759321241)
    Farpoint Vixen Dovetail Plate - Armored Strip - Celestron 9.25 Inch SCT (pre 2008)
    Farpoint Vixen Dovetail Plate - Meade 7 Inch Mak (6795759255705)
    Farpoint Vixen Dovetail Plate - Celestron 9.25 Inch SCT (pre 2008) (6795759255705)
    Farpoint Vixen Dovetail Plate - Celestron 9.25 Inch SCT (pre 2008)
    Farpoint Vixen Dovetail Plate - Armored Strip - Celestron 8 Inch SCT (6795759157401)
    Farpoint Vixen Dovetail Plate - Armored Strip - Celestron 8 Inch SCT (6795759157401)
    Farpoint Vixen Dovetail Plate - Armored Strip - Celestron 8 Inch SCT
    Farpoint Vixen Dovetail Plate - Celestron 11 Inch SCT (6795759124633)
    Farpoint Vixen Dovetail Plate - Celestron 11 Inch SCT (6795759124633)
    Farpoint Vixen Dovetail Plate - Celestron 11 Inch SCT
    Farpoint Dovetail Plate - Vixen VMC260L OTA (6795758993561)
    MountingHoles1.jpg (6795758993561)
    Farpoint Dovetail Plate - Vixen VMC260L OTA
    Farpoint Dovetail Plate - Takahashi Clamshell -Two Mounting Positions (6795758829721)
    FTAP01DPwShell_800.jpg (6795758829721)
    Farpoint Dovetail Plate - Takahashi Clamshell -Two Mounting Positions
    FMDUPS.jpg (6795758731417)
    Farpoint 7 Inch Metric Universal Dovetail Plate
    Farpoint 10 Inch Metric Universal Dovetail Plate (6795758567577)
    Farpoint 10 Inch Metric Universal Dovetail Plate
    Farpoint 7 Inch Universal Dovetail Plate (6795758502041)
    Head-on FDUPS (6795758502041)
    Farpoint 7 Inch Universal Dovetail Plate
    Farpoint 14 Inch Universal Dovetail Plate Product Shot (6795758436505)
    Farpoint 14 Inch Universal Dovetail Plate Close up (6795758436505)
    Farpoint 14 Inch Universal Dovetail Plate
    Top down Shot FDTV (6795758207129)
    Farpoint Dovetail Plate - Tele Vue Clamshell
    FDTSA Product Shot (6795757977753)
    FDTSA Product Shot 2 (6795757977753)
    Farpoint 6 Inch Dovetail Saddle - Takahashi
    Farpoint Dovetail Plate - Takahashi Clamshell (6795757813913)
    FDTCS_3 (6795757813913)
    Farpoint Dovetail Plate - Takahashi Clamshell
    Product Shot 2 FDSEQ (6795757715609)
    FDSEQ Product Shot (6795757715609)
    Farpoint Dovetail Saddle - Puck Adapter EQ6