Dust on your sensor or filters is only visible when you zoom in on a shot, and then it’s difficult to clean them away. With the DayStar flat cap FC120, you can create flat frames: shots of an evenly lit surface. You can calculate them when stacking with your light frames, so dark corners and dust shadows disappear from the final result.
The cap attaches to the front of your telescope. Do you have one? dew cap on your tube, Then that determines the size you need. So measure the outer diameter of the part where the cap is going to be attached, so that it fits well and no stray light falls in from the edge.
Preferably, take your shots immediately after your shoot session, without changing your focus or the position of your camera. Light them so that the histogram is approximately halfway up, not towards the left or right.
If your measurement does not match, please check The flat cap in size FC130.
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