Please give me some guidance on how to shoot the moon with a DSLR using the direct focus method. Why is mine always blurry?

Seeing the direct focus method, it is obvious that you are using a telescope connected to a SLR to take pictures of the moon, but let me tell you, it is not easy to take good pictures like this.

The most important thing when photographing the moon is the focal length, but the focal length of a telescope does not have a big advantage over a camera lens. The telescope can see clearly because its objective lens has a large diameter and high resolution, and it matches the eyepiece This effect can only be achieved by magnification. Direct focus photography is directly connected to the objective lens without the participation of the eyepiece, and this advantage cannot be taken advantage of. In fact, a similar effect can be achieved by using a good mobile phone to shoot directly through the eyepiece.

Then, among telescopes, the direct focus method can take better pictures, which is a reflective telescope, but the reflective telescope is large and requires regular maintenance, otherwise the optical quality will decline quickly. The most common refractor telescope, due to the problem of chromatic aberration, has obvious purple edges in the photos taken, so you will find that many pictures are in black and white, because taking black and white pictures can avoid the problem of chromatic aberration. There is also a folding Marka (Shika) telescope, which is small in size and short in length. However, because it sacrifices the central part of the lens that produces the best image, its image is not sharp and is only suitable for visual viewing, not suitable for photography. The results are even worse than Lots of telephoto lenses for cheap cameras. Although the aperture of the reentrant telescope is large enough (150mm or above) and it can have good resolution, its size and weight are not inferior to other telescopes. The only advantage is that it is short.

Finally, the best pictures of the lunar surface that will amaze you all used other advanced methods. Simply put, they are advanced equatorial mounts, combined with high-quality electronic eyepieces for video and close-up photography. Thousands of photos are then combined into one high-definition image later. Even if all this is done, you still have to pray for the best weather and best seeing on the most suitable day of the moon phase, otherwise it will be all in vain, and if you are unlucky, you will not get a good opportunity for half a year. Astronomical photography is a highly technical and equipment-intensive activity, so don’t think you can just casually achieve good results. Beginners often fiddle with it for a long time without even finding the moon.