Date: Thu, 07 Oct 2004
Robert Spellman of the Griffith Observatory has some excellent images of the Barrow light ray on his website located at http://www.geocities.com/xetor_2000/BARROW.HTML. The images were taken at 09/21/04 2:03 UT. The crater Barrow light ray was imaged under very poor seeing, a "santa anna wind" condition was in effect at the time. The images were almost completely blur throughout the observing run. I may be able to improve on this image as I review the recording in the next few days. Note the banding in ray structure; while observing the ray on the monitor I was quite sure that its brightness varied especially near the crater rim at the left side of Barrow. I will review the recording to see if this was real or just and illusion caused by the bad seeing.
From: Jim Ferreira Subject: Barrow Sunrise Ray 3 Sep 2003 08:04:27 -0700 (PDT) Was viewing the terminator last night a few minutes past 8:00pm and came upon a sunrise ray in Barrow. Didn't see it listed in the predictions for this month. The seeing was pretty bumpy but in steadier moments the ray was clearly visible with two distinct shadows in the narrow cone of light emanating from Barrow's eastern wall. A video capture image made with a 6 inch Maksutov-Cassegrain @ f/20 represents what I could see fairly well. http://www.lafterhall.com/barrow_ray_15cm_jferreira_001.jpg I watched the western side of the crater floor slowly fill with light until 8:45pm, however, I did not note any change in the width of the fan of light. Seeing conditions continued to worsen and I gave up the vigil shortly before 9:00pm. Did anyone else view Barrow's sunrise ray? Video on... Jim Ferreira http://www.lafterhall.com/astro.html
Barrow Lunar Ray Confirmation Report
I helped a friend wring out his new ITE DeepSky Pro video camera on the night of 2003/2/9 UT. The location was north of Harrisburg, Pennsylvania. The relative humidity was a miserable 65% and the temperature was -14 degrees Celsius or less. All told I spent about 5 hours outside imaging the moon, Jupiter, and numerous deep-sky objects using the camera and a 12" Meade LX200 SCT working at f/6.3. The Barrow Lunar Sunrise Ray (Rukl #4) was easily visible through a 12.5mm orthoscopic eyepiece (154x) but not on the video monitor or the videotape upon playback.The ray was quite prominent and was the first of the three lunar rays that I witnessed that night.Dave Mitsky
From Tony Donnangelo:
Date/time of observation: 2002/8/15 ~02:05 UT Location of site: Hummelstown RD 3, PA, USA (40.26° N., 76.75° W.) Site Elevation: 425 feet (129 meters) Instrument: Takahashi FS-102 f/8 Magnification: 8mm Lanthanum SW(102.5x), 5.2mmPentax XL (157x) Moon was 46% illuminated. 06 days, 06 hours, 30 mins. old. Object: Crater Barrow. Rukl Chart #4. Lunar Light Ray s Coordinates: 71.5°N., 7.5°E.
The sun-rise ray was a thin shaft of light running the full length of the totally shadowed crater floor east to west. It might be possible to observe the ray at an earlier time. I observed it over a period of 30 min., and was still visible after that time.
From: "Daniel del Valle Hernandez" |
Date: Sat, 12 Oct 2002 20:18:08 -0700 From: Dave NorthSubject: [SHALLOW] Barrow ray Should you be near an eyepiece right now (8:17pm PDT) there's quite a spectacular ray in the crater Barrow (Rukl 4). Move fast... Dave North San Jose California 128mm refractor 125x
I saw this ray from a street corner of San Francisco tonight. We were doing some Sidewalk Astronomy in a friendly neighborhood of the city - the only spot not enveloped in fog! I brought my Rulk Altas with me, and was using my 10-inch f/7.3 homemade dob, Stardust. I also enjoyed the shadows and while not exactly a ray, a wedge of light on the crater floor of Maurolycus (Rukl 66). The shadows in Gemma Frisius/Goodacre (same map) made this crater rally stand out. So much so that more than one of the hundred folks who took a look asked me what the name of that particular crater was!--
Date: Sun, 13 Oct 2002 12:25:14 -0700 From: AkkanaSubject: Re: [SHALLOW] Barrow ray A very impressive ray! It inspired me to dust off the long-neglected sketch pad ... http://www.shallowsky.com/moon/rukl04.html ...Akkana
I noticed a sunrise ray at Crater Barrow. The ray originated from the east wall at approximately 71.5 N lat and 12.5 deg long. The ray projected 75 km across Barrow's floor and ended at the western sunlit rim of the crater and just to the north of Barrow A. Viewing in this area is difficult due to crater's relatively close proximity to the lunar limb and the nearby terminator. Sketch of the Barrow Ray by Akkana Peck, October 12 2002. |