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  1. Diffraction Limited - Boltwood Cloud Sensor II for Observatory Use with 50 foot cable

    Diffraction Limited - Boltwood Cloud Sensor II for Observatory Use with 50 foot cable

    The Boltwood Cloud Sensor II measures the amount of cloud cover by comparing the temperature of the sky to the ambient ground level temperature. The sky temperature is determined by measuring the amount of radiation in the 8 to 14 micron infrared band ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: BCSII_050

    Available - Ships in 2-4 Days

    $1,795.00

  2. Optec - TCF-Lynx3, 3” Temperature Compensating Focuser with FocusLynx Controller

    Optec - TCF-Lynx3, 3” Temperature Compensating Focuser with FocusLynx Controller

    TCF-Lynx3 focuser with FocusLynx control system includes 3-inch Crayford style focuser, FocusLynx controller, 20-inch long temperature probe, power supply, 7-ft. Cat-5e cable and

    ...
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    (48 States)
    Model#: 19706

    Available - Ships in 2-4 Days

    $1,795.00

  3. Astro-Physics 0.76x CCD Telecompressor Corrector for 155 f/7 StarFire EDF (f/5.3) and 140 f/7.5 StarFire EDF (f/5.7)

    Astro-Physics - 0.76x CCD Telecompressor Corrector for 155 f/7 StarFire EDF (f/5.3) and 140 f/7.5 StarFire EDF (f/5.7)

    Please Note: We cannot ship Astro-Physics products to customers in Germany, Switzerland, Austria, France and Japan.

    The success of the 160TCC Telecompressor Corrector prompted us to offer a version that was designed to work with the 155 f/7 StarFire EDF (155EDF) and 140 f/7.5 StarFire EDF (140EDF4).

    ...
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    Model#: 155TCC

    Available - Typically ships in 1-3 Days

    $1,520.00

  4. new bf30

    Coronado - 30mm Blocking Filter

    The 30mm Blocking Filter is a 2" straight through design and comes with a 1.25" Zero Length reducer

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    (48 States)
    Model#: BF30

    Available - Ships in 2-4 Days

    $1,599.00

  5. Lunt - 50mm Ha Etalon-Filter-System with B1200 Blocking Filter for 1.25" Focuser

    Lunt - 50mm Ha Etalon-Filter-System with B1200 Blocking Filter for 1.25" Focuser

    The new Lunt Solar Systems LS50 Hydrogen-Alpha Filter incorporates a unique design feature which decreases chances of decontaction (breakage) and increases solar filter thermal stability

    ...
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    Model#: LS50FHa1/B1200

    In Stock

    $1,646.00

  6. Software Bisque - MKS5000 Mount Electronics Upgrade

    Software Bisque - MKS5000 Mount Electronics Upgrade

    Upgrade your Paramount ME electronics to the new MKS 5000 control panel. All upgrades can be done from home with included instructions. ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: MKS5000-U

    This item is special order. Delivery times will vary. Place your order today and your card will not be charged until the item ships.

    $1,695.00

  7. Coronado - Retro fit module for SM60P

    Coronado - Retro fit module for SM60P

    Fully integrated Ha telescope 60mm aperture ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: SM60DB

    Available - Ships in 2-4 Days

    $1,790.00

  8. SXV-AOC

    Starlight Xpress - Adaptive Optics System with Off Axis Assembly

    Starlight Xpress - Adaptive Optics System with Off Axis Assembly

    ...
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    FREE SHIPPING
    (48 States)
    Model#: SXV-AO

    In Stock

    $1,795.00

  9. Explore Scientific - TDM Telescope Drive Master Ver. 2 Encoder and Electronics Set (Requires Mount Adapter)

    Explore Scientific - TDM Telescope Drive Master Ver. 2 Encoder and Electronics Set (Requires Mount Adapter)

    TDM Telescope Drive Master Ver. 2 Encoder and Electronics Set (Requires Mount Adapter) ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: 721000

    Available - Ships in 2-4 Days

    $1,799.99

  10. Lunt 80mm Internal Double Stack Module for LS80THA

    Lunt - 80mm Internal Double Stack Module for LS80THA

    Lunt Solar Systems 80mm Internal Double Stack Module for LS80THA This internal double stacking module for is strictly for use with a Lunt LS80THa H-alpha Telescope. Uses Pressure Tuner for True Doppler Tuning. Lowers Bandpass to <0

    ...
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    Model#: LS80THA/PT/DSII

    In Stock

    $1,595.00

  11. Explore Scientific - TDM Adapter with Encoder 16" ACF (requires 0721004 TDM Controller with Cable)

    Explore Scientific - TDM Adapter with Encoder 16" ACF (requires 0721004 TDM Controller with Cable)

    TDM Adapter with Encoder 16" ACF (requires 0721004 TDM Controller with Cable)

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    FREE SHIPPING
    (48 States)
    Model#: 0721260

    Available - Ships in 2-4 Days

    $1,599.99

  12. Starlight Xpress SXV Large Format Active Optics

    Starlight Xpress - SXV Large Format Active Optics

    The Starlight Xpress SXV Large Format Active Optics is used in conjunction with the off-axis guider and unlike most cameras that have a guider chip already complete with them

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    FREE SHIPPING
    (48 States)
    Model#: SXV-AO-LF

    Available - Ships in 2-4 Days

    $1,689.00

  13. Astrodon MonsterMOAG 3" Standalone Off-Axis Guider - 4 Guide Port

    Astrodon - MonsterMOAG 3" Standalone Off-Axis Guider - 4 Guide Port

    MOAG means Manual Off-Axis Guider.  It allows the user to guide their telescope to obtain sharp, round stars by guiding in front of your filters using unfiltered light in the same optical beam as the imaging camera.

    ...
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    FREE SHIPPING
    (48 States)
    Model#: MMOAG-4

    Available - Ships in 2-4 Days

    $1,750.00

  14. Optec - TCFS-3i 3" Integrated Temperature Compensating Focuser Kit.

    Optec - TCFS-3i 3" Integrated Temperature Compensating Focuser Kit.

    The TCF-S has a new big brother - the TCF-S3. This 5 pound focuser has all the same features of the TCF-S but is just bigger and stronger ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: TCF-S3i

    Available - Ships in 2-4 Days

    $1,795.00

  15. Lunt - B3400 Blocking Filter in Straight Thru 2" Tube with T2 and 2" Connection

    Lunt - B3400 Blocking Filter in Straight Thru 2" Tube with T2 and 2" Connection

    The Lunt Solar Systems B3400 Blocking Filter is its own unique system unique located in ... Learn More
    Model#: B3400s2

    In Stock

    $1,798.00

  16. Chroma filters

    Chroma Technology - 50mm x 50mm LRGB Filter and Ha/8-50 Set - Square

    Extremely durable coatings withstand humidity changes, extreme temperature fluxes and remain spectrally accurate in CWL and band pass adherence.

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    FREE SHIPPING
    (48 States)
    Model#: HaLRGB-50S

    Available - Ships in 2-4 Days

    $1,525.00

  17. Lunt 60mm H-Alpha Etalon for Double-Stacking on the LS-60

    Lunt - 60mm H-Alpha Etalon for Double-Stacking on the LS-60

    Use the double-stack technique to reduce bandpass and get the best

    ...
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    Model#: LS60FHA

    In Stock

    $1,599.00

  18. Lunt 50mm Ha Etalon-Filter-System with B1200 Blocking Filter for 2" Focuser

    Lunt - 50mm Ha Etalon-Filter-System with B1200 Blocking Filter for 2" Focuser

    The new Lunt Solar Systems LS50 Hydrogen-Alpha Filter incorporates a unique design feature which decreases chances of decontaction (breakage) and increases solar filter thermal stability

    ...
    Learn More
    Model#: LS50FHa2/B1200

    In Stock

    $1,646.00

  19. Officina Stellare - 78mm 2-Lens Reducer/Flattner for Pro RC Telescopes

    Officina Stellare - 78mm 2-Lens Reducer/Flattner for Pro RC Telescopes

    The Officina Stellare 78mm 2-Lens Reducer/Flattner was designed specifically for use with Officina Stellare Pro Ritchey Chretien Telescope and flattened, 0.75x focal reducers.

    ...
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    Model#: RCFRD

    This item typically has a delivery time of 8-12 weeks. Place your order today to reserve.

    $1,708.00

  20. Coronado - Retro fit module for SM60T

    Coronado - Retro fit module for SM60T

    Coronado Double Stacking Filters for SolarMax Telescopes feature a narrowband element front unit filter and a T-Max de-tuning device. The Double Stack Filter by Coronado is useful for your solarscope as it will give you a better view of an image ... Learn More
    FREE SHIPPING
    (48 States)
    Model#: SM60TDB

    Available - Ships in 2-4 Days

    $1,790.00

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