International Astronomy Day

4 products

    You found the Easter Egg! In honor of Intermational Astrnomy Day, May 7th get a full 25% off of OSI products not already on sale! Coupon expires May 7th at 23:59 PST.

    AT CHECKOUT, ENTER COUPON CODE:

    InternationalAstronomy
    to get the 25% discount.

    4 products
    Product Shot FP217 (6795765153945)
    FP220 Product Shot (6795765153945)
    Farpoint 2 Inch Collimation Kit with Carrying Case
    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
    JMI Event Horizon Robotic Telescope Focuser - EVR - ASCOM- Cassegrain Adaptation
    Product Shot OTA 10 (6795813486745)
    Head on OTA 10 (6795813486745)
    JMI Telescope Carrying Case for Meade and Celestron 10" f/10 SCT OTA