1. When modeling the telescope 's field of view (eyepiece or CCD), it is oriented only in horizontal coordinates. Even if you choose as the base plane of the grain field - equatorial coordinates (below in the field settings) - the field still revolves around the zenith, not the pole of the world. Even if you look at a map of the sky in equatorial cooordinates. It is not correct. But at the same time (even in horizontal coordinates) the field is not oriented exactly.
2. The rotation angle of the field relative to the base plane is adjusted by the slider. This is not quite correct and convenient. It 's hard to adjust the exact angle. Say 90 degrees or another. It is necessary that the flipping angle of the field can be painted parametrically - by entering a whole piece of degrees. Or even the choice is horizontal or vertical orientation of the frame. Please add this feature.
3. Whether it is possible (not sure whether it is feasible) to add a "pixelization" function when selecting a CCD field (on/off) would be useful. When you increase the field more and more, a "net" (of thin lines) appears that shows the size of individual pixels. It would be useful to compare how many pixels in the photo will occupy the disk of the planet, the detail of the Moon 's relief, the resolution for stars.
