Friday, February 29, 2008

29 February 2008

Observing LocationBedroom Window
Observational Period0545-0530 EST
Atmospheric Conditions
Cloud CoverClear
Temperature19°F
WindLight Breeze
HumidityModerate
Barometric Pressure30.53" Hg
Rising
Feels LikeToasty in my bed next to the radiator
Wind Chill 8°F

TransparencyGood
Seeing
InstrumentsNaked-eye - Charlie
Observing PartyCharlie Ridgway

0500 ESTAstronomical Twilight begins
0532 ESTAstronomical Twilight ends
Nautical Twilignt begins

TargetISS Visible Pass
Constellation
CategorySatellite
Time
yyyymmdd.hhmm
20080229.0549 EST
CommentsNot Seen
I am looking at the tail end of the pass hoping to spot it passing through gaps in the surrounding buildings. The sky is starting to get bright and according to Cal Sky the ISS is only Mag 1 by now.
  Heavens-AboveCalSky
StartTime0549 EST0550 EST
Alt.10°horizon
Az.SSW209.0°
SSW
Mag. -0.8
Max. Alt.Time0552 EST0554 EST
Alt.25°26.9°
Az.SE135.8°
SE
Mag.-0.1-1.8
EndsTime0554 EST0559 EST
Alt.10°horizon
Az.ENE62.9°
ENE
Mag. 1.7
I am finding a disparity between the data given in Heavens Above and that in CalSky. Start and end of the pass can be attributed to Heavens Above reporting it at 10° Alt while CalSky reports it at the horizon. But they both should show the same time and location for culmination.

0604 ESTNautical Twilight ends
Civil Twilight begins
0631 ESTCivil Twilight ends
Sunrise



The military is delaying the launch of a satellite because of all the debris that is still in orbit after they destroyed USA 193 before reentry.

Space.com



Sunspots Observed

The Sun has finally developed some spots so I have done a bit of observing when the weather was conducive to that activity.

Observing Hours for the Year 2008

 DayNightTotal
HoursDaysAvgHoursDaysAvgHoursDaysAvg
Jan2.2590.252.7550.555.00130.38
Feb3.2590.368.2571.1811.25120.94
TOTAL 5.50180.3111.00120.9216.25250.65