FC170 flat cap for flat frames in astrophotography | DayStar

If you rotate your camera to take another shot, the dust shadows and dark edges in your image also shift. That’s why you take flat frames with each camera stand; the DayStar flat cap FC170 is designed for that. You put it on the front of your telescope and take shots of an evenly lit area that you then calculate when stacking with your light frames.

Check beforehand which size fits the front of your tube or fog cap, so that the cap fits well and no stray light falls inwards along the edge. a camera rotator, Then make new flats after each turn.

Make your flats preferably immediately after your shoot session, without changing your focus. This way, the dust and vignetting will fall exactly where they should in your light frames. If you’re unsure about the size, please compare them as well. the flat cap FC180.