天王星 月惑星研究会 関西支部 （最新）
Uranus Image 2002/07/12
Ed Grafton (14 inch f/11 Celestron SCT, ST6 CCD medium resolution mode)
Here is a Uranus Observation from July 12th 2002 at 09:47 UT
Photometric Data form the July 12th image with Titania used as a reference
based on a HST observation a few years back when Uranus was at opposition.
Titania mag 13.49 ( reference )
Oberon mag 13.64
Ariel mag 13.71
Umbriel mag 14.01
In the July 12th image Umbriel is embedded in the noise and shows the most
deviation from the expected values. The other three moons were well place
The sky was average transparency 5/10 and the seeing was good to excellent
7/10. There was heavy due with the temperature in the mid 70s and no wind.
Taken with a C14 @ f/27 with a ST5c from Houston Texas July 6th at 10:01 UT.
L=15 x 7 sec clear filter
Ed Grafton E-Mail: firstname.lastname@example.org
[Ed Grafton, Houston Texas U.S.A]