I eliminate this gradient by subtracting a frame having a synthetic background. These frames are prepared analytically with QMiPS32. The improvement is readily apparent. The programs I use complement each other and together provide seemingly limitless possibilities for improving digital images. In addition to taking beautiful pictures, CCDs offer a chance to make discoveries from our backyards.
Amateurs can now easily search for new supernovae, variable stars, and asteroids.
Recently I discovered an unknown variable star near M27 on one of my CCD images. But even from urban locations we can use CCDs to observe the wonders of the night sky. He wishes to thank his firiend and amateur astronomer John W. Johnson for reviewing this article and assisting with its translation. Copyright of the publication is the property of the publisher and the text may not be copied without the express written permission of the publisher except for the inprint of the video screen content or via the print options of the software. Text is intended solely for the use of the individual user.