Thursday, June 12, 2008

11 June 2008

Observing LocationVP
Observational Period1115-1130 EDT
Atmospheric Conditions
Cloud CoverScattered Clouds
Temperature78.1° F
WindGentle Breeze
HumidityModerate
Barometric Pressure30.06" Hg
Rising
Feels LikeHot

The breeze is making it somewhat bearable.
Wispy cirrus clouds appear to be lowering.

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

Target Sunspots
ConstellationTau
CategorySolar
Time
yyyymmdd.hhmm
20080611.1115 EDT
Comments
Distance
Light Time
1.01 AU
8m 27s
Angular Size31' 33.3"
Altitude62.9°
Heliographic Latitude
(B0)
+0.54°
Heliographic Longitude
(L0)
348.75°
Parallactic Angle
(P)
-11.49°
Carrington rotation number
(CR)
2071

Space Weather is showing Group 998 (that number sounds familiar, like it is on its second rotation) on the trailing limb but it is too small for me to see it.

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



Observing LocationMO
Observational Period2115-2330 EDT
Atmospheric Conditions
Cloud CoverClear
Temperature81° F
WindLight Breeze
HumidityModerate
Barometric Pressure30.07" Hg
Rising
Feels LikeMild

After three days of hot and humid weather this feels wonderful and cooler than it really is.

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

TargetMars
ConstellationLeo
CategoryPlanet
Time
yyyymmdd.hhmm
20080611.2130 EDT
CommentsMars looks like a bright, slightly golden comet with the tails pointing to the lower right.
HIP 46232 it to the lower right. It is faint and maybe slightly bluish although Planetarium indicates that it is red.
Object
Class
Classical Planet
Elongation57.1°
Distance
Light Time
(from Earth)
1.98 AU
16m 27s
Distance
(from Sun)
1.66 AU
Angular Size4.73"
Magnitude1.6
Central Meridian 87°
Altitude27.4°

TargetSaturn
ConstellationLeo
CategoryPlanet
Time
yyyymmdd.hhmm
20080611.2130 EDT
CommentsI played with the back can of SAR a bit and got better collimation that got rid of most of the coma. The planet resolved into a round disk with a short line passing through it 10:00 to 4:00. The upper portion of the line appears to be broken next to the planet but according to Starry Night Starter the shadow on the ring should be on the trailing edge of the rings which would be to the lower tight in my scope.
Object
Class
Classical Planet
Elongation57.1° E
Distance
Light Time
(from Earth)
9.58 AU
1h 20m
Distance
(from Sun)
9.31 AU
Angular Size17.3" x 15.4"
Ring
Angular
Size
39.2" x 6.3"
Ring
Inclination
9.2°
Magnitude+0.7
Altitude32.5°

Starry Night Starter graphic

TargetMoon
ConstellationVir
CategoryLunar
Time
yyyymmdd.hhmm
20080611.2150 EDT
Comments
Lunation1057
PhaseWaxing Gibbous
Age8d 6h 26m
Distance
Light Time
(from earth)
393,487 km
1.32s
Elongation106.7° E
% Illuminated64.6%
Morning Terminator Colongitude (λ E)10.8°
Evening Terminator Colongitude (λ W)190.8°
Libration in Latitude5° 38'
Libration in Longitude6° 09'
Magnitude-10.6
Angular Size30.37'
Altitude35° 48'

Virtual Moon Atlas graphic

Terminator
In ShadowFeature
Diameter/Length (km); Class
In Sunlight
  Prothagoras
21; Young
>>>
  Archytas
31; 1
>>>
  Timaeus
32; 2
>>>
  Birmingham
92; Extremely Old
>>>
  Epigenes
55; 5
>>>
  Plato
109; 5
>>>
<<< Montes Tenberiffe
182
>>>
  Mons Pico
25
>>>
<<< Timocharis
33; 1
 
<<< Eratosthenes
88; 1
>>>
<<< Stadius
65; 5
 
<<< Copernicus
93; 1
 
  Davy
34; 5
>>>
<<< Kundt
10
 
  Lassell
23; Old
>>>
  Thesbit
56; 2
>>>
  Rupes Recta
134
>>>
  Birt
16; 1
>>>
  Deslandres
256
>>>
  Hell
33; Young
>>>
  Lexell
62; Very Old
>>>
  Ball
41; 2
>>>
  Sasserides
90; Extremely Old
>>>
<<< Tycho 
  Maginus
194; 3
>>>
<<< Clavius
245; Young
>>>
  Moretus
111; 1
>>>

  • There appears to be a faint ring on the floor of Mare Imbrium below Montes Recti (90 km), Montes Tenerife (182 km), and Mons Pico (25 km) that looks to me as though there might be a drowned crater there, it being the inner wall and the above mentioned features an outer wall – like the Altai Scarp and Mare Nectaris.
  • Dorsum Grabau (121 km) is faintly visible
  • Bancroft (13 km) is visible. I see a color/shade/texture difference at the location of Feuillee (9 km) and Beer (9 km) but I can’t resolve it into individual craters.
  • Mons Wolf (35 km) was seen
  • Montes Appeninus (401 km) look like a string of four individual mountains (Mons Wolf being the southern terminal one)
  • Vallis Alps (166 km) is visible as a faint gray line
  • Cassini (56 km) is hardly visible.
  • The following features in Montes Appeninus were identified:
    • Promontorium Deville (20 km)
    • Promontorium Agassiz (20 km)
    • Mons Blanc (25 km)
    • Mons Piton (25 km)
    • Piazzi Smyth (13 km)
    • Kirch (11 km)
    • Montes Spitzenbergen (60 km)
    • Conon (21 km)