Thursday, July 10, 2008

10 July 2008

Observing LocationCDLD
Observational Period0930-0945 EDT
Atmospheric Conditions
Cloud CoverIsolated Clouds
Temperature73° F
WindGentle Breeze
HumidityModerate
Barometric Pressure29.94" Hg
Steady
Feels LikeWarm

The humidity has dropped considerably from what it has been of late but is still sensible.

TransparencyExcellent
SeeingI
Instruments Brunton 8x21 compact binocular w/Welco gold shade 14 welder's filter - Charlie
Observing PartyCharlie Ridgway

Target Sunspots
ConstellationGem
CategorySolar
Time
yyyymmdd.hhmm
20080710.0930 EDT
Comments
Distance
Light Time
1.02 AU
8m 27s
Angular Size31' 30.9"
Altitude42.1°
Heliographic Latitude
(B0)
3.92°
Heliographic Longitude
(L0)
312.63°
Parallactic Angle
(P)
+1.79°
Carrington rotation number
(CR)
2072

This is the first time I can remember seeing a positive parallactic andle (P) since I have been making observations.

Nothing Seen
Active Region Explorer had been showing a cluster of spots about to rotate onto the Earth-facing side of the Sun but they appear to have dissipated since yesterday.

 Groups SpotsR
North0 0 0
South0 0 0
Total0 0 0
R = (Groups * 10) + Spots)



Observing LocationPSC
Observational Period2000-2100 EDT
Atmospheric Conditions
Cloud CoverIsolated
Temperature72° F
WindLight Breeze
HumidityModerate
Barometric Pressure30.17" Hg
Rising
Feels LikeMild

The air feels a lot dryer tonight than it has of recent. The air appears to be very stable as I did not remark any boiling on the limb of the Moon.

TransparencyExcellent
SeeingI
Instruments SAR: Coulter CT-100 Newtonian reflector - Charlie
  • Celestron Omni 20mm (21x)
  • Celestron Omni 2x Barlow
Observing PartyCharlie Ridgway

TargetMoon
Constellation
CategoryLunar
Time
yyyymmdd.hhmm
20080710.2000 EDT
Comments
Lunation1058
PhaseWaxing Gibbous
Age7d 22h 40m
Distance
Light Time
(from earth)
397,627 km
1.32s
Elongation99.5° E
% Illuminated58.6%
Morning Terminator Colongitude (λ E)4.9°
Evening Terminator Colongitude (λ W)184.9°
Libration in Latitude7° 07'
Libration in Longitude5° 0'2
Magnitude-10.4
Angular Size30.05'
Altitude28° 49'

Virtual Moon Atlas graphic

Vallis Alpes
166
Terminator
In ShadowFeature
Diameter/Length; Class
In Sunlight
  Nansen
104
>>>
<<< Plato
109; 5
 
<<< Mons Pico
25
 
  >>>
  Mons Piton
25
>>>
  Cassini
56; 5
>>>
  Aristillus
55
>>>
  Autolycus
39; 1
>>>
  Montes Spitzbergen
60
>>>
  Archimedes
82; 5
>>>
<<< Montes Archimedes
163
>>>
  Mons Hadley
25
>>>
  Apollo 15 >>>
  Murchison
57; Very Old
>>>
  Flammarion
74; Extremely Old
>>>
  Herschel
40; 1
>>>
  Ptolemaeus
57; 5
>>>
  Alphonsus
108; 5
>>>
  Arzachel
96; 3
>>>
  Purbach
115; 5
>>>
  Walther
128; 4
>>>
<<< Lexell
62; Very Old
 
<<< Orontius
105; 3
 
  Nasireadin
52; 1
>>>

Valles Alpes looked like a dark needle laying on a flat table. There was little indication of Montes Alpes.

Around 2100 EDT I was able to see Virgo naked eye

And in the scope I was able to see 69 Vir on one edge of the FoV and the Moon on the other.

I had more people stop to look through the scope here tonight than normally stop up at MO. I had about a half-dozen adults and a similar number of kids look and more unescorted kids who were too small to reach the eyepiece who wanted to look.