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  1. TO - 16 " H-Alpha Filter OFF-AXIS

    TO - 16 " H-Alpha Filter OFF-AXIS

    The H-Alpha (Hydrogen-Alpha) filter allows safe observation of the entire solar disc, providing superb .. ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: TO16HAOA
    $1,059.00

  2. TO - 14 " H-Alpha Filter OFF-AXIS

    TO - 14 " H-Alpha Filter OFF-AXIS

    The H-Alpha (Hydrogen-Alpha) filter allows safe observation of the entire solar disc, providing ..

    ...
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    FREE SHIPPING
    (48 States)
    Model#: TO14HAOA
    $999.00

  3. TO11-12.5HAOA

    TO - 11-12.5 " H-Alpha Filter OFF-AXIS

    The H-Alpha (Hydrogen-Alpha) filter allows safe observation of the entire solar disc, providing... ... Learn More
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    (48 States)
    Model#: TO11-12.5HAOA
    $929.00

  4. TO11-12.5HACA

    TO - 11-12.5 " H-Alpha Filter CENTER-AXIS

    The H-Alpha (Hydrogen-Alpha) filter allows safe observation of the entire solar disc, providing ... ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: TO11-12.5HACA
    $969.00

  5. TO -  BLACK POLYMER   8.5X11 Sheet

    TO - BLACK POLYMER 8.5X11 Sheet

    A lower cost alternative where lower magnification is used such as with binoculars, camera filters, finder scopes and small telescopes. Stronger than Mylar with the filtering properties protected within the substrate. Solar image is yellow-orange. Also available in sheets. Guaranteed 5 years.

    ...
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    Model#: BP85x11
    $30.00

  6. TeleVue - OIII Bandmate Filter 2"*

    TeleVue - OIII Bandmate Filter 2"*

    This OIII filter particularly enhances planetary nebulae in larger telescopes Narrowband filter for high transmission, with high blocking of unwanted longer wavelengths to yield high-contrast images ... Learn More
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    (48 States)
    Model#: BFO-0200
    5% off

    Regular Price: $315.00

    Special Price: $299.25

  7. TeleVue - OIII Bandmate Filter 1.25"*

    TeleVue - OIII Bandmate Filter 1.25"*

    This OIII filter particularly enhances planetary nebulae in larger telescopes Narrowband filter for high transmission, with high blocking of unwanted longer wavelengths to yield high-contrast images ... Learn More
    Model#: BFO-0125
    5% off

    Regular Price: $175.00

    Special Price: $166.25

  8. TeleVue - Bandmate Mars TYPE B Filter*

    TeleVue - Bandmate Mars TYPE B Filter*

    Bandmate™ Mars Type-B FilterThe Bandmate™ Mars Type-B filter is a high efficiency, single band dielectric coating that achieves penetrating views of the Martian surface. The surface appearance is similar to that of the popular #21 filter ... Learn More
    Model#: BMB-0125
    5% off

    Regular Price: $205.00

    Special Price: $194.75

  9. TeleVue - Bandmate Mars TYPE A Filter*

    TeleVue - Bandmate Mars TYPE A Filter*

    Bandmate™ Mars Type-A FilterWe all know you can't have your cake and eat it too, but the Bandmate™ Mars Type-A filter lets you at least have a good taste! The Type-A is a dual band filter with different dielectric coatings on each side of t ... Learn More
    Model#: BMA-0125
    5% off

    Regular Price: $205.00

    Special Price: $194.75

  10. Takahashi - 95mm UV-Haze Filter

    Takahashi - 95mm UV-Haze Filter

    Get rid of UV haze from observing using this brilliant 95mm filter special from Takahashi.

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    FREE SHIPPING
    (48 States)
    Model#: TFT0095
    $229.95

  11. Shelyak Instruments Star Analyser 100 and M42-31.75 Adapter

    Shelyak Instruments - Star Analyser 100 and M42-31.75 Adapter

    The Star Analyser 100 is a high efficiency 100 lines/mm transmission diffraction grating, blazed in the first order. It is mounted in a standard 1.25 inch diameter threaded cell, to be compatible with most telescopes and accessories. It has been designed to make the production of low resolution spectrum images of a wide range of point like astronomical objects as easy as possible.

    ...
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    Model#: PF0003+BA0016
    $239.95

  12. SBIG - Ten position "stand alone" filter wheel for ST-402/1603/3200/8300 and non-SBIG cameras - will vignette 8300 in f/6 or faster systems

    SBIG - Ten position "stand alone" filter wheel for ST-402/1603/3200/8300 and non-SBIG cameras - will vignette 8300 in f/6 or faster systems

    The new CFW10 is a ten-position filter wheel designed for the USB version of our ST camera series or any camera where a serial port is available for controlling the wheel ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: CFW10-SA
    $995.00

  13. SBIG - Internal Filter Wheel for the ST-402ME with custom RGB+C color filters

    SBIG - Internal Filter Wheel for the ST-402ME with custom RGB+C color filters

    An internal filter wheel with custom RGB+C color filters is available for RGB or LRGB color imaging with the ST-402ME ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: CFW-402-RGB
    $295.00

  14. SBIG - Internal Filter Wheel for the ST-402ME with custom BVI+C photometric filters

    SBIG - Internal Filter Wheel for the ST-402ME with custom BVI+C photometric filters

    Although priced as an entry level CCD camera, the ST-402ME is an exceptionally sensitive and capable instrument ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: CFW-402-BVIC
    $379.00

  15. SBIG - FW5-STX Filter Wheel

    SBIG - FW5-STX Filter Wheel

    Filter wheel for STX series cameras, 5-position 65mm square filters.

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    FREE SHIPPING
    (48 States)
    Model#: FW5-STX
    $1,795.00

  16. SBIG Filter Wheel for 8300 for 36mm Filters without Filters

    SBIG - Filter Wheel for 8300 for 36mm Filters without Filters

    ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FW5-8300
    $695.00

  17. SBIG Filter Wheel for 8300 for 36mm filters with Baader 36mm LRGB Filters

    SBIG - Filter Wheel for 8300 for 36mm filters with Baader 36mm LRGB Filters

    Since the KAF-8300 CCD sensor usually cannot accommodate 1.25" filters due to its size especially at shorter focal lengths for imaging deep sky.

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    FREE SHIPPING
    (48 States)
    Model#: FW5-8300_B36LRGB
    $995.00

  18. SBIG - Filter Wheel for 8300 for 36mm filters with Astrodon 36mm LRGB Filters

    SBIG - Filter Wheel for 8300 for 36mm filters with Astrodon 36mm LRGB Filters

    Since the KAF-8300 CCD sensor usually cannot accommodate 1.25" filters due to its size especially at shorter focal lengths for imaging deep sky.

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    FREE SHIPPING
    (48 States)
    Model#: FW5-8300_LRGB-E36R
    $995.00

  19. SBIG - Eight-Position Filter Wheel for ST-8300

    SBIG - Eight-Position Filter Wheel for ST-8300

    Features:Holds eight 36mm drop in filters for un-vignetted imaging at any f/ratio with the ST-8300 or ST-4000XM cameras.Small footprint:  6.3 x 8.1 inches ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: FW8-8300
    $895.00

  20. SBIG 5-position 1.25" Filter Wheel without Filters for ST-7/8/9/10/2000 Cameras

    SBIG - 5-position 1.25" Filter Wheel without Filters for ST-7/8/9/10/2000 Cameras

    The CFW9 will be essentially the same size and shape as the current CFW8A to match the ST series camera body when directly bolted to the front

    ...
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    FREE SHIPPING
    (48 States)
    Model#: CFW9
    $795.00

Items 141 to 160 of 1071 total

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