Making Every Pixel Count

Maxim DLRegistration• Automatic routines identify stars in the image.– Make certain you are aligning similar images. It is possible for MaximDL to fail if aligning different colors or images with wildly varying PSFs(star images via tracking/seeing).– AutoStar is the most common. Auto-correlation rarely (only for x/ydithered images)• Manual (1 and 2 star) are typically used as “brute force” solutions.– Well, there is technically “overlay” but this probably ranks with doingtaxes.– No scaling for any of the above!• Astrometric requires a “World Coordinate System” embedded in theFITS header. Transformation is calculated from it (not from PSFs inimage).• Planetary alignment assumes edges. (works very well)• Auto One Star assumes one bright PSF (generally in a croppedimage).