What does the Askar 0.8x Reducer do for my 103APO telescope?
The Askar 0.8x Reducer shortens the focal length of your 103APO to 560.32mm and increases its speed to f/5.44. This provides a wider field of view, allowing you to fit larger celestial objects into your frame, and reduces exposure times, enabling you to collect data on faint nebulae and galaxies more efficiently.
How do I connect my camera to the Askar 103APO 0.8x Reducer to achieve the correct 55mm back focus?
The reducer provides 55mm of back focus from the base of the included M48 male adapter thread. To achieve this spacing, you simply add extension tubes or accessories between the reducer and your camera sensor until the total distance is 55mm. A typical DSLR with a T-ring already has approximately 55mm of spacing, making the connection direct.
Can I use 2-inch filters with the Askar 103APO 0.8x Reducer?
Yes. The reducer features an integrated M48x0.75 female thread on the camera side, which is the standard for 2-inch astronomy filters. You can thread your filters directly into the reducer for light pollution suppression or narrowband imaging.
Is the Askar 103APO 0.8x Reducer suitable for planetary imaging?
While technically usable, a reducer is not ideal for planetary imaging. Reducers decrease focal length to capture wider fields, which is the opposite of the high magnification needed to resolve detail on planets like Jupiter and Saturn. For planetary work, you should use the Askar 103APO at its native focal length or with a Barlow lens to increase magnification.
How does the Askar 103APO 0.8x Reducer improve imaging of large targets like the Andromeda Galaxy (M31)?
At its native focal length, the Askar 103APO may be too narrow to frame the entire Andromeda Galaxy (M31) and its satellite galaxies with a larger sensor. By reducing the focal length to 560.32mm, the reducer widens the field of view, allowing you to capture the full galactic structure in a single frame.
Will this reducer provide a flat field for my full-frame DSLR or CMOS camera on the Askar 103APO?
Yes, the triplet optical design of the Askar 0.8x Reducer is engineered to provide field flattening that illuminates a full-frame sensor. This ensures that stars remain sharp and round from the center of your image all the way to the corners, which is essential for creating high-quality astrophotographs.
