Takahashi Epsilon-130D Astrograph

While it is technically possible to use it for visual observation, this telescope is purpose-built as an astrograph. Its optical design is optimized for high-performance imaging, and you will likely find the experience much more rewarding when paired with a dedicated camera.

The fast f/3.3 focal ratio is a significant advantage for astrophotography, as it allows you to capture much more light in a shorter amount of time compared to slower systems. This means you can achieve high-quality data on faint nebulosity or comets with shorter sub-exposures, reducing the burden on your mount's tracking accuracy.

The system features a 44mm image circle, which provides excellent coverage for full-frame sensors. You can expect sharp, high-contrast results across the entire frame, making it a versatile choice for wide-field imaging.

Like any fast Newtonian-based system, the Epsilon-130D requires precise collimation to maintain its peak performance. However, Takahashi's engineering is robust, and once you become familiar with the process, it is a manageable task that ensures the sharp, edge-to-edge performance this instrument is known for.

The 56.2mm metal back distance is the specific spacing required between the corrector lens and your camera sensor to achieve optimal focus and aberration correction. You will need to account for this distance when calculating your imaging train, including any filter wheels or off-axis guiders you plan to use.

With a tube weight of just 4.9kg and a compact length of 460mm, the Epsilon-130D is exceptionally portable. It is an excellent choice for astrophotographers who frequently travel to dark-sky sites and need a high-performance instrument that doesn't require a massive, heavy-duty mount.