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Astrograph Telescopes

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.

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  1. ASA - Astrograph 20" f/3.6 Open Truss

    ASA - Astrograph 20" f/3.6 Open Truss

    The N-Series Astrographs may be used for three different focal lengths, by using appropriately calculated correctors.

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    Model#: ASA20NG-OK3
    $33,042.00

  2. Rila 400 F/3.8 PREMIUM Package

    Officina Stellare - Rila 400 F/3.8 PREMIUM Package

    The Riccardi Large Astrograph, RiLA, is the first of its kind thanks to the review of Italian optical designer, Massimo Riccardi. 

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    Model#: RILA400PRE
    $31,672.00

  3. Officina Stellare RiDK 500 f/7 Standard Glass Aluminum-Carbon Optical Tube

    Officina Stellare - RiDK 500 f/7 Standard Glass Aluminum-Carbon Optical Tube

    The Riccard Dall-Kirkham 500 Astrograph is a state of the art optical tube designed by Massimo Riccardi, the Chief Optical Designer at Officina Stellare who has created a 500mm astrograph resulting in fantastic astro-imaging performance and quality.

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    Model#: RIDK500SGA
    $34,560.00

  4. Officina Stellare RIFAst 400 f/3.8 Standard Glass Aluminum-Carbon Optical Tube

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

    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!

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    Model#: RIFA400CGC
    $31,978.80

  5. ASA - Astrograph 20" f/3.6

    ASA - Astrograph 20" f/3.6

    The N-Series Astrographs may be used for three different focal lengths, by using appropriately calculated correctors.

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    Model#: ASA20N-OK3
    $31,200.00

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

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

    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.

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    Model#: RILA500SGA
    $36,367.35

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