Brief observing report. Date: Aug 30th, 1998 Location: Fremont Peak state park, California Time: 1:25 am PDT and about 3am PDT Seeing: around 6 Telescope: AP 155 mm f/7 EDFS Zeiss binoviewer plus binoviewer barlow 16 mm Zeiss Abbe Orthos 10 mm Zeiss Abbe Orthos Filters: none
I made some rough sketches of the major features to help show their relative position.
Jupiter at 1:25 am showed three long, grayish festoons coming down from the NEB and stretching down and along in the EZ. One of the festoons began well after the center line of the planet. The second started about on the centerline (sorry not the correct term). The third started nearly above the GRS. This third festoon seemed to be connected to a long dark area on the lower side of the NEB.
There were dark red-brown "bars" on the northern side of the NEB. One roughly about the starting point of the second festoon and another a little forward of the starting point of the third festoon. Again, these were on the north side of the NEB and the festoons were on the south side of the NEB. These festoon looked to be longer than the length of the GRS.
The GRS was roughly half way between the limb and the center line of the planet. The GRS was generally pale but there was a darker area in the lower part of the GRS.
The SEB had an interesting white split down the middle ahead of the GRS. Later in the morning, this white split curved over the GRS with at least two more white areas following the first looking like a twisted rope.
I'm not sure of the magnification being used. I had the binoviewer barlow connected directly to the binoviewer in "straight through" mode but in this case I was putting the barlow of the binoviewer in a 2" Maxbright star diagonal, as one would with an eyepiece. The barlow attached ahead of the binoviewers prism diagonal would be about 3x. I assume it would be something less than 3x connected directly to the binoviewer. I also used 10mm Zeiss Abbe Orthos part of the time, later in the morning.