Astrograph Telescopes

Showing 1 to 20 of 81 total
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  1. AG Optical - 20" Convergent Fast f/5 Astrograph

    $32,895.00
    SKU: AGO-CFA20

    Wait Time is 3-5 Days

    The AG Optical Systems Convergent Fast Astrograph .5 meter (20 inch) F5 telescope is an observatory-class imaging instrument featuring a huge 60mm flat field free from astigmatism and coma. The outstanding optical performance of the FA20 is made possible through the convergence of careful design, state-of-the-art manufacturing, and precise assembly. Wide field images are captured with high-contrast details and sharp stars across the entire field of view.

  2. Officina Stellare - RiLA 400 f/5.2 Ceramic Glass Full-Carbon Optical Tube

    $30,299.99
    SKU: OFF-RILA400CGC

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

  3. Officina Stellare - RiLA 500 f/5 Standard Glass Aluminum-Carbon Optical Tube

    $40,259.99
    SKU: OFF-RILA500SGA

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

    The Officina Stellare Rila Series are known for having a fast focal ratio with a wide corrected field of view while maintaining a lightweight body. The apertures range from 300mm all the way to 800mm. The Rila 500 has a f/5 focal ratio.

  4. Officina Stellare - RiLA 500 f/5 Ceramic Glass Full-Carbon Optical Tube

    $48,899.99
    SKU: OFF-RILA500CGC

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

  5. Officina Stellare - RiLA 600 f/5 Standard Glass Aluminum-Carbon Optical Tube

    $60,779.99
    SKU: OFF-RILA600SGA

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

    The Officina Stellare Rila Series are known for having a fast focal ratio with a wide corrected field of view while maintaining a lightweight body. The apertures range from 300mm all the way to 800mm. The Rila 600 has a f/5 focal ratio.

  6. Officina Stellare - RiLA 600 f/5 Ceramic Glass Full-Carbon Optical Tube

    $77,119.99
    SKU: OFF-RILA600CGC

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

  7. Officina Stellare - RiLA 700 f/5 Standard Glass Aluminum-Carbon Optical Tube

    $79,919.99
    SKU: OFF-RILA700SGA

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

    The Officina Stellare Rila Series are known for having a fast focal ratio with a wide corrected field of view while maintaining a lightweight body. The apertures range from 300mm all the way to 800mm. The Rila 700 has a f/5.2 focal ratio.

  8. Officina Stellare - RiLA 700 f/5 Ceramic Glass Full-Carbon Optical Tube

    $121,999.99
    SKU: OFF-RILA700CGC

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

  9. Officina Stellare - RiLA 800 f/5 Standard Glass Aluminum-Carbon Optical Tube

    $140,999.99
    SKU: OFF-RILA800SGA

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

    The Officina Stellare Rila Series are known for having a fast focal ratio with a wide corrected field of view while maintaining a lightweight body. The apertures range from 300mm all the way to 800mm. The Rila 800 has a f/5 focal ratio.

  10. Officina Stellare - RiLA 400 f/5.2 Standard Glass Aluminum-Carbon Optical Tube

    $22,999.99
    SKU: OFF-RILA400SGA

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

    The Officina Stellare Rila Series are known for having a fast focal ratio with a wide corrected field of view while maintaining a lightweight body. The apertures range from 300mm all the way to 800mm. The Rila 400 has a f/5.2 focal ratio.

  11. Officina Stellare - RIFAst 800 f/3.8 Ceramic Glass Full-Carbon Optical Tube

    $205,999.99
    SKU: OFF-RIFA800CGC

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

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

  12. Officina Stellare - RIFAst 400 f/3.8 Ceramic Glass Full-Carbon Optical Tube

    $35,399.99
    SKU: OFF-RIFA400CGC

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

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

  13. Officina Stellare - RIFAst 500 f/3.8 Standard Glass Aluminum-Carbon Optical Tube

    $50,299.99
    SKU: OFF-RIFA500SGA

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

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

  14. Officina Stellare - RIFAst 500 f/3.8 Ceramic Glass Full-Carbon Optical Tube

    $60,759.99
    SKU: OFF-RIFA500CGC

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

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

  15. Officina Stellare - RIFAst 600 f/3.8 Standard Glass Aluminum-Carbon Optical Tube

    $68,999.99
    SKU: OFF-RIFA600SGA

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

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

  16. Officina Stellare - RIFAst 600 f/3.8 Ceramic Glass Full-Carbon Optical Tube

    $88,219.99
    SKU: OFF-RIFA600CGC

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

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

  17. Officina Stellare - RIFAst 700 f/3.8 Standard Glass Aluminum-Carbon Optical Tube

    $91,119.99
    SKU: OFF-RIFA700SGA

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

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

  18. Officina Stellare - RIFAst 700 f/3.8 Ceramic Glass Full-Carbon Optical Tube

    $138,529.99
    SKU: OFF-RIFA700CGC

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

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

  19. Officina Stellare - RIFAst 800 f/3.8 Standard Glass Aluminum-Carbon Optical Tube

    $161,839.99
    SKU: OFF-RIFA800SGA

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

    The Officina Stellare RiFAst astrograph series was designed to be a further step up from the RiLA series as far as focal ratio and field of view to accommodate a wider range of imagers, rotators, focusers and guiders!

  20. Officina Stellare - RiLA 800 f/5 Ceramic Glass Full-Carbon Optical Tube

    $180,179.99
    SKU: OFF-RILA800CGC

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

Showing 1 to 20 of 81 total
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For serious astrophotographers, an optical tube that has quality optics and suitable specifications is key to producing successful images. Astrographs come in many different specifications and designs, so each model can be oriented or preferred for a different type of imaging (eg. solar, terrestrial, deep sky etc). Some common designs include the Ritchey-Chrétien, Riccardi Honders, and Catadioptric optical tubes. Choosing an astrograph depends on how the astro-imager wants to observe, what focal length and focal ratio it has, aperture, optical coatings, and how suitable it is for the camera they intend to use.

A key specification very important to consider when choosing an astrograph is focal ratio in relation to aperture. This is an important to remember because focal ratio determines what the magnification and field of view the observor will get. Therefore, if the observor intends to mainly view deep sky objects with lower surface brightnesses, a shorter focal length will reduce magnification and increase field of view since most deep sky objects tend to appear very large but not bright. Astrograph telescopes with slower focal ratios such as an f/12 will provide higher magnification and smaller field of views; better for planetary observing.