If it isn’t, some collimation adjustment is needed. The hole should still be centered in the rings. Next, check the other side of focus by reversing direction of the focus knob so that the centered star is focused and then defocused again. If the hole is not centered, then adjustment to the collimation is needed (see Figure 3). If the telescope is collimated, the hole should appear centered relative to the rings. the shadow from the secondary obstruction) in the center (see Figure 2). There will be brighter rings of light surrounded by a dark hole (i.e.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |