QHYCCD QHY8L - Manual (Page 18)

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2. Attachment using drawtube adapter. If desired, an adapter can be screwed into
the camera, and then inserted into the drawtube. The adapter shown in Figure 3
has 42mm threads that mate with those in the camera, and is 5 cm long. It fits into
a standard 2” drawtube. Figure 4 shows it attached to the camera. Figure 5 shows
the drawtube adapter by itself (not included with the camera but available from
astronomy equipment retailers).
Figure 3. Camera and drawtube adapter
Figure 4. Camera attached to drawtube adapter, ready for insertion into drawtube
Figure 5. Drawtube adapter
3. Use Camera with regular DSLR lens. In this method, an adapter is screwed into
the front of the camera which allows it to take standard DSLR lenses. Figure 6