NGC 7243 (also known as Caldwell 16) is an open cluster and Caldwell object in the constellation Lacerta. It shines at magnitude +6.4. It is located near the naked-eye stars Alpha Lacertae, 4 Lacertae, an A-class double star, and planetary nebula IC 5217. It lies approximately 2,800 light-years away, and is thought to be just over 100 million years old, consisting mainly of white and blue stars.
NGC 7243
Photographed with the APO 107 mm refractor telescope and the ASI 2600MC CMOS color camera in Stuvsta, September 7th, 2025. Exposure was 20 * 2 min with IDAS LPS P3 light pollution filter. Postprocesssing in Pixinsight with Blur XTerminator.
NGC 7243
Photographed with the APO 107 mm refractor telescope and the ASI 2600MC CMOS color camera in Stuvsta, September 7th, 2025. Exposure was 20 * 2 min with IDAS LPS P3 light pollution filter. Postprocesssing in Pixinsight with Blur XTerminator.