The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Thanks.Necessary cookies are absolutely essential for the website to function properly. Twitter users can use the button below to tweet this report to their followers. On Wednesday, 15 March 2023, I will be giving a talk on "Smartphone Astrophotography" to the members of the San Francisco Amateur Astronomers.Ĭomments are welcome using Email. Close: Sunday, 12 March 2023, 2252 MSTĮighteen years ago, 12 March 2005, I had my first visit to Oracle, Arizona, for a night of observing. Ceres was 16.8' from the galaxy at 2130 MST.Ģ250 MST: Took a Sky Quality reading. It was still low when I took images at 2130 MST and 2230 MST, so seeing was not very good. Slewed to M91.ĭid a couple of framing test images and then waited for M91 to rise a little higher in the eastern sky. Mounted the D850 DSLR at prime focus, focused on the star Regulus, and locked the mirror. I have now observed 138 Herschel 400 objects and imaged 128 of them. While waiting for M91 and Ceres to rise higher in the sky, I observed the following Herschel 400 open clusters, 102X: NGC2301, NGC2304, NGC2311, NGC2324, NGC2335, NGC2343, NGC2353, NGC2354, NGC2355, and NGC2360. They were about 16' apart and both were visible in the same field-of-view. Slewed to NGC2022.īegan imaging Herschel 400 objects, StarLock autoguided, 1 minute exposures for NGC2022 (ISO 3200) and open star clusters (ISO 1600), and 3 minutes, ISO 3200 for the Cone Nebula.Ģ136 MST: Viewed M91 (galaxy) and dwarf planet Ceres, low in the eastern sky, 102X. Mounted the D850 DSLR at prime focus, focused on the star Betelgeuse, and locked the 12" mirror. It was not yet visible.ġ916 MST: NGC2022 (planetary nebula) faintly visible, 102X.ġ928 MST: The Zodiacal Light and the Winter Milky Way were visible.ġ934 MST: NGC2022 (planetary nebula) now easily seen, 102X. It would be my first Herschel 400 imaging target this night. Slewed to NGC2022 (faint planetary nebula). Nice view the cluster in the bright twilight sky.ġ846 MST: Jupiter now visible to the naked eye.ġ856 MST: Some central nebulosity visible in M42 with the twilight sky still bright, 102X. SYNCed the observatory clock to WWV time signals.ġ822 MST: LX600 ON, StarLock OFF, High Precision OFF.ġ830 MST: Venus now visible to the naked eye.ġ839 MST: Viewed the Trapezium star cluster in M42 (Orion Nebula), 102X. Cloudy skies continued until late Sunday afternoon, 12 March.
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