Astronomical Observations: 19 October 2009

If you make a measurement and get what you expect, you have made a measurement. If you don't get wat you expect, you've made a discovery.

attrib.: Enrico Fermi

Observing Location

Various southern Manhattan Locations

Observational Period

1902030 EDT

Atmospheric Conditions

Transparency	Good
Seeing

Instruments

Naked-eye - Charlie

Observing Party

Charlie Ridgway

Great World Wide Star Count

20091019
1910 EST

Date Time
Observation	701
Location	Herald Square Lat.: 40.750542° Long: -73.987645°
Conditions	It was clear but I was looking up through floodlights illuminating the park from on top of Macy’s.
Limiting Magnitude	Mag. 1.25
Comments	I could see Vega and Deneb.

Observation	704
Date Time	20091019 1920 EST
Location	7 Abe @ 29 St Lat.: 40.747722° Long: -73.992845°
Conditions	The corner is darker than most.
Limiting Magnitude	Mag. 3.89
Comments	I could see all of the Northern Cross stars but none of the stars in the V behind Deneb.

Observation	705
Date Time	20091019 1940 EST
Location	Madison Square Park Lat.: 40.742512° Long: -73.987849°
Conditions	It is dark inside the park if you are not neat a street light.
Limiting Magnitude	Mag. 3.89
Comments	I saw all of the Northern Cross stars but none of the stars in the V behind Deneb.

Observation	706
Date Time	20091019 1950 EST
Location	Union Square Park Lat.: 40.742512° Long: -73.987849°
Conditions	The areas without trees obstructing the view of the sky are the most light-polluted.
Limiting Magnitude	Mag. 3.89
Comments	I could see all of the Northern Cross stars but none of the stars in the V behind Deneb.

Observation	707
Date Time	20091019 2000 EST
Location	Washington Square Park Lat.: 40.730798° Long: -73.997282°
Conditions	The park is well lit where it is open to the sky and there are floodlights shining upward onto Washington Arch.
Limiting Magnitude	Mag. 4.55
Comments	I could see all of the stars of the Northern Cross and the two farthest stars of the V behind Deneb.

Observation	708
Date Time	20091019 2020 EST
Location	Tompkins Square Park Lat.: 40.725195° Long: -73.981269°
Conditions	To e 1 km from the other locations I am surveying I have to stand on the SE corner of the park under a street light so there is more light-pollution than if I were observing from inside the park.
Limiting Magnitude	Mag. 4.55
Comments	I saw all of the stars of the Northern Cross and found the two farthest stars of the V, the fainter one with difficulty. This observation was made 10 minutes after the close of the official observation window but was reported anyway.

Of the last 100 reports submitted all but 9 have been from the USA and most of those from east of the Mississippi.

Astronomical Observations