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
    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
    from $199.87
    Farpoint Dovetail Ring Screws, Long 1.5" Length (Set of 6)
    $25.30
    Farpoint Dovetail Ring Screws, Short .5" Length (Set of 6)
    $25.30
    Farpoint Dovetail Ring Screws, Standard 1" Length (Set of 6)
    $25.30
    Farpoint FDUPS Ball Head Camera Adapter
    $163.90
    Dovetail Bar Camera Mount (6834289148057)
    Dovetail Bar Camera Mount (6834289148057)
    Dovetail Bar Camera Mount
    $121.00
    Farpoint 14 Inch Metric Universal Dovetail Plate (6831691464857)
    Farpoint 14 Inch Metric Universal Dovetail Plate (6831691464857)
    Farpoint 14 Inch Metric Universal Dovetail Plate
    $96.80
    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
    $157.30
    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
    $36.30
    Universal D Size, 57.3 Series Dovetail Plate-14inch (6795841831065)
    Universal D Size, 57.3 Series Dovetail Plate-14inch
    $96.80
    HandleD-FDA Product Shot (6795814895769)
    HandleD-FDA HAnd Shot (6795814895769)
    D-Handle (only) for Farpoint Dovetail Adapter
    $59.40
    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
    $96.80
    Farpoint Vixen Side by Side Connecting Bar (6795806671001)
    Img0224.jpg (6795806671001)
    Farpoint Vixen Side by Side Connecting Bar
    $60.50
    Farpoint 108mm Vixen Dovetail Rings with Dovetail (6795761451161)
    Farpoint 125mm Vixen Dovetail Rings with Dovetail (6795761451161)
    Farpoint 125mm Vixen Dovetail Rings with Dovetail
    $133.10
    FVUPS7 (6795760795801)
    FVUPS7_2 (6795760795801)
    Farpoint 7 Inch Universal Dovetail Plate - Vixen
    $60.50
    FVUPS4 2000x2000 (6795760730265)
    FVUPS4 2000x2000 Shot 2 (6795760730265)
    Farpoint 4 Inch Universal Dovetail Plate - Vixen
    $42.90
    Farpoint 14 Inch Universal Dovetail Plate – Vixen (6795760631961)
    Farpoint 14 Inch Universal Dovetail Plate - Vixen
    $72.60
    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
    $115.50
    Product Shot FVM8 (6795759976601)
    Farpoint Vixen Dovetail Plate - Meade 8 Inch SCT (6795759976601)
    Farpoint Vixen Dovetail Plate - Meade 8 Inch SCT
    $84.70
    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
    $115.50
    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
    $96.80
    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
    $103.40
    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
    $84.70
    Farpoint Vixen Dovetail Plate - Armored Strip - Celestron 9.25 Inch SCT (6795759452313)
    Farpoint Vixen Dovetail Plate - Armored Strip - Celestron 9.25 Inch SCT
    $115.50
    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
    $96.80
    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)
    $115.50
    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)
    $96.80
    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
    $104.50
    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
    $96.80
    Farpoint Dovetail Plate - Vixen VMC260L OTA (6795758993561)
    MountingHoles1.jpg (6795758993561)
    Farpoint Dovetail Plate - Vixen VMC260L OTA
    $181.50
    Farpoint Dovetail Plate - Takahashi Clamshell -Two Mounting Positions (6795758829721)
    FTAP01DPwShell_800.jpg (6795758829721)
    Farpoint Dovetail Plate - Takahashi Clamshell -Two Mounting Positions
    $108.90
    FMDUPS.jpg (6795758731417)
    Farpoint 7 Inch Metric Universal Dovetail Plate
    $72.60
    Farpoint 10 Inch Metric Universal Dovetail Plate (6795758567577)
    Farpoint 10 Inch Metric Universal Dovetail Plate
    $79.20
    Farpoint 7 Inch Universal Dovetail Plate (6795758502041)
    Head-on FDUPS (6795758502041)
    Farpoint 7 Inch Universal Dovetail Plate
    $80.30
    Farpoint 14 Inch Universal Dovetail Plate Product Shot (6795758436505)
    Farpoint 14 Inch Universal Dovetail Plate Close up (6795758436505)
    Farpoint 14 Inch Universal Dovetail Plate
    $91.30
    Top down Shot FDTV (6795758207129)
    Farpoint Dovetail Plate - Tele Vue Clamshell
    $79.20
    FDTSA Product Shot (6795757977753)
    FDTSA Product Shot 2 (6795757977753)
    Farpoint 6 Inch Dovetail Saddle - Takahashi
    $145.20
    Farpoint Dovetail Plate - Takahashi Clamshell (6795757813913)
    FDTCS_3 (6795757813913)
    Farpoint Dovetail Plate - Takahashi Clamshell
    $79.20
    Product Shot 2 FDSEQ (6795757715609)
    FDSEQ Product Shot (6795757715609)
    Farpoint Dovetail Saddle - Puck Adapter EQ6
    $145.20