The Barrow Lunar Ray Reports

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" 
Subject: Barrow sunrise ray
Date: Sun, 17 Nov 2002 08:51:56 -0400

UD: 11-11-02
UT: 23:10
Col. 354.5
Telescope: 8"Celestron SCT, f/10
Exposure: standard capture with AstroCam CCD camera
Location: 18.26N, 67.09W   Aguadilla, Puerto Rico
	


Date: Sat, 12 Oct 2002 20:18:08 -0700
From: Dave North 
Subject: [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

Date: Sat, 12 Oct 2002 23:21:48 -0700
From: Jane Houston Jones
Subject: Re: [SHALLOW] Barrow ray

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!
--
Jane Houston Jones
San Rafael, CA
jane@whiteoaks.com

Date: Sun, 13 Oct 2002 12:25:14 -0700
From: Akkana 
Subject: 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

August 14, 2002 (Larry B Smith )
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.