When to Observe Thul Hijjah Waning (OLD) Crescent ?
The geocentric conjunction (Geocentric New Moon) will occur Inshalla on (Sunday 29 January 2006), at
14:15 UT.
Sighting the OLD crescent on (Sunday 29 January 2006) and on (Saturday 28 January 2006) is shown in the below graphs using the program Accurate Times by Mohammad Odeh according to Odeh criterion. Where:-
- It is impossible to see the OLD crescent from the areas located under the red color. Because either the Moon on this day rises after the Sunrise and/or the topocentric conjunction occurs before the Sunrise.
- The crescent is expected to be seen by optical aid only from the areas located under the blue color.
- The crescent is expected to be seen by optical aid from the areas located under the magenta color. In these areas the crescent could be seen by naked eye if the atmospheric conditions are superb and the observer is experienced.
- The crescent is expected to be easily visible by naked eye from the areas located under the green color.
- The crescent can not be seen from uncolored areas, even though the Moon rises in these locations before the Sunrise and the topocentric conjunction occurs after the Sunrise, but the Moon is not sufficiently illuminated in order to be seen as crescent even by optical aid.
- Kindly notice that the below graph shows the possibility of seeing the crescent from areas between 60 degrees north of Equator down to 60 degrees south of Equator.
Sunday 29 January 2006
Saturday 28 January 2006
Thul Hijjah Waning (OLD) Crescent Observation Results
Saturday 28 January 2006:
- USA: ICOP member Mr. Jim Stamm said:
"Old Moon Crescent Observation Report
====================================
January 2006
Location = Tucson, Arizona (USA)
Longitude = 110.9645 W
Latitude = 32.4204 N
Elevation = 842 meters
Time Zone = -7.0 hours
Surface conditions at time of sighting at
Tucson International Airport (805 m):
Temperature = 2 degrees Celcius
Relative Humidity = 49 percent
Atmospheric Pressure = 1024 mb (sea level)
Magnitude limit at 9 degrees altitutde with 55 power
in C-8 telescope, before onset of twilight = 10.5
Topocentric and local time values from “Accurate Times”:
Moonrise (at sea level) = 06:49
Sunrise (at sea level) = 07:15
Time from new moon at 07:54 = -22 hr. 10 min.
Moon lag time = 27 minutes
Relative Altitude = 3.4 degrees
Elongation from sun = 14.3 degrees
Crescent width = 31 arcseconds
Illumination = 1.55 percent
Crescent first observed through 8” SC telescope:
Time = 07:52:30
Altitude = 9 degrees
Final observation with telescope:
Time = 07:54:30
Altitude = 9 degrees
This was the most tenuous image that I have ever acquired. I was
positive of the FOV and the focus (thanks to Antares and Nunki),
but I couldn’t see anything at first. After about 15 seconds I
suspected an image, and then after adjusting the focus, it improved.
The crescent seemed to grow from about 10 degrees to 30 degrees, and
then shrink again. After two minutes, it became more difficult to see,
and I lost it while trying to improve the focus."