John Posted December 1, 2021 Share Posted December 1, 2021 (edited) Nice clear night at last. I've got the 12 inch dobsonian out and I've been observing Uranus for the past hour. My specific objective is to see how many Uranian moons I can spot. With this scope in the past I've seen the two brightest - Umbriel and Titania. Tonight, with the help of a freshly washed primary mirror, I'm very pleased to have been able to add two more - Oberon and Ariel. The brighter pair, Umbriel and Titana are visible, and can be held, with direct vision. Oberon and Ariel are more elusive (closer to the planet as well) and are being glimpsed as they pop in and out of view. I am using high magnifications for this task. 318x gets me Umbriel and Titania but I needed to push up to 454x to tease out Oberon and Ariel. Oberon is close to magnitude 15 currently which is quite a challenge ! This is the first time I've been able to see four of Uranus's natural satellites and I'm pleased with the result Miranda would be very nice but that one is currently another magnitude fainter again and even closer to the planet than Oberon and Ariel Four is nice though Edited December 2, 2021 by John 28 1 Link to comment Share on other sites More sharing options...
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