Thursday, May 29, 2008

26 May 2008

Observing LocationPSC
Observational Period1115-1200 EDT
Atmospheric Conditions
Cloud CoverClear
Temperature72° F
WindLight Breeze
gusting to
Moderate Breeze
HumidityModerate
Barometric Pressure29.99" Hg
Falling
Feels LikeWarm

The wind is gusting wuite strongly every minute or so. There is no boiling around the Sun’s limb but seeing is adversely affected by the wind buffeting the scope.

TransparencyExcellent
SeeingII
Instruments SAR: Coulter CT-100 Newtonian reflector - Charlie
  • CelEDTron Omni 20mm (21x)
  • CelEDTron Omni 2x Barlow
- w/Baader AstroSolar filter film w/Baader AstroSolar filter film
Observing PartyCharlie Ridgway

Target Sunspots
ConstellationTau
CategorySolar
Time
yyyymmdd.hhmm
20080526 EDT
Comments
Distance
Light Time
1.01 AU
8m 25s
Angular Size31' 37.3"
Altitude64.2°
Heliographic Latitude
(B0)
-1.27°
Heliographic Longitude
(L0)
187.13°
Parallactic Angle
(P)
-17.23°
Carrington rotation number
(CR)
2070

Nothing Seen

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

I brought the Blackberry 7101 and my Brunton Eclipse with me today to compare the GPS fixes. The Brunton was able to find satellites and get a fix several minutes faster than the Blackberry and the Blackberry lost satellites while the Brunton was still getting fixes. They use different ways of telling you how accurate the fixes are so I can’t directly compare them but have graphed the several fixes I was able to get with each devise.

LatitudeLongitude
Brunton Eclipse
40° 50.187’-73° 51.513’
40° 50.174’-73° 51.1498’
40° 50.170’-73° 51.481’
Blackberry 7101
40° 50.1924’-73° 51.5028’
40° 50.1828’-73° 51.5272’
Actual Location
40° 50.1726’-73° 51.5078’

I can't be sure with this much data, but it looks like the Blackberry might be a little more accurate while the Brunton seems to be more reliable