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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Daystar Rear Red Side - From SCT Thread to 2" Female Drawtube

Daystar Rear Red Side - From SCT Thread to 2" Female Drawtube

by Daystar Filters
SKU DAY-RF2D2
$69.00 - $69.00
$69.00
$69.00 - $69.00
$69.00
Price Match Policy!
  • Adapts standard SCT male threads to a 2" female drawtube
  • Enables the use of 2-inch diagonals, eyepieces, and accessories
  • Durable, single-piece metal construction
  • Part of the Daystar color-coded component system
  • Model: RF2D2
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Daystar Rear Red Side - From SCT Thread to 2" Female Drawtube

    The Daystar RF2D2 Rear Red Side adapter provides the essential connection from a standard Schmidt-Cassegrain Telescope (SCT) rear cell thread to a 2-inch female drawtube, unlocking compatibility with the widest-field 2-inch accessories.

    Securely Adapt SCT Threads for 2-Inch Accessories

    This adapter threads directly onto the rear cell of most Schmidt-Cassegrain and Maksutov-Cassegrain telescopes, converting the fine SCT threads into a robust 2-inch receptacle. This simple component is critical for observers wanting to move beyond 1.25-inch accessories and take full advantage of their telescope's light-gathering capabilities.

    • Access to Wide-Field Views: By accommodating a 2-inch star diagonal and eyepieces, you can achieve the maximum possible true field of view your telescope can deliver, perfect for framing large objects like the Andromeda Galaxy (M31) or the Pleiades (M45).
    • Imaging Train Integration: The 2-inch drawtube provides a standard connection point for attaching 2-inch focal reducers, flatteners, or camera nosepieces, forming a secure foundation for your imaging setup.
    • Daystar System Component: As part of Daystar's color-coded system, the "Red Side" designation helps identify its role within a larger assembly of solar filtering equipment, ensuring correct and safe configuration.

  • What is the Daystar RF2D2 Rear Red Side adapter used for?

    The Daystar RF2D2 adapter is a mechanical connector that converts the threaded rear port of a Schmidt-Cassegrain Telescope (SCT) into a 2-inch female drawtube. This allows you to use 2-inch accessories like star diagonals, eyepieces, and cameras with your SCT.

    Will the Daystar RF2D2 adapter fit my Celestron 8" SCT?

    Yes. The vast majority of commercial Schmidt-Cassegrain telescopes, including the Celestron 8" SCT, use a standardized rear cell thread. The Daystar RF2D2 is designed to thread directly onto this port without issue.

    Can I use 2-inch eyepieces with the Daystar RF2D2 adapter?

    Yes, that is its primary purpose. To use 2-inch eyepieces, you will first insert a 2-inch star diagonal into the RF2D2 adapter, and then place your 2-inch eyepiece into the diagonal. This combination is required for comfortable, wide-field viewing.

    Does the Daystar RF2D2 adapter use compression rings to hold accessories?

    This component is a simple female drawtube, which typically uses one or more thumbscrews to secure accessories directly. It does not include a non-marring brass compression ring. For that feature, you would need to look for a "visual back" style adapter instead of a basic drawtube.

    What does "Rear Red Side" mean on this Daystar adapter?

    The "Rear Red Side" is part of Daystar Filters' color-coding system for their components, especially those used in complex solar filter setups. The color helps users quickly identify and correctly assemble different parts of an optical train, ensuring proper connections and spacing.

    How does the Daystar RF2D2 help me see wider views of the Andromeda Galaxy (M31)?

    The Andromeda Galaxy (M31) is a very large deep-sky object. To fit it into a single field of view with a typical SCT, you need very low magnification. The Daystar RF2D2 adapter allows you to use a 2-inch diagonal and a long focal length 2-inch eyepiece (e.g., 40mm or 55mm), which provides the low power and wide true field necessary to see the galaxy in its entirety.

  • Daystar Filters Warranty