Difference between revisions of "ObservingDetails"

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|-bgcolor=grey
 
|-bgcolor=grey
 
| 2012Feb6 || F || -2 48 || 1.6 || 2 17 || 1.4 || 7 22 || down || 7.1 || 6.2 || 5.0
 
| 2012Feb6 || F || -2 48 || 1.6 || 2 17 || 1.4 || 7 22 || down || 7.1 || 6.2 || 5.0
 +
|-
 
| 2012Feb21 || N || -1 43 || 1.3 || 3 16 || 1.9 || 8 14 || down || 6.0 || 5.2 || 4.2
 
| 2012Feb21 || N || -1 43 || 1.3 || 3 16 || 1.9 || 8 14 || down || 6.0 || 5.2 || 4.2
 +
|-
 
| 2012Mar7 || F || -0 39 || 1.2 || 4 12 || 2.9 || 9 03 || down || 4.9 || 4.1 || 3.1
 
| 2012Mar7 || F || -0 39 || 1.2 || 4 12 || 2.9 || 9 03 || down || 4.9 || 4.1 || 3.1
 +
|-
 
| 2012Mar21 || N || 0 21 || 1.2 || 5 04 || 6.3 || 9 46 || down || 3.9 || 3.1 || 2.1
 
| 2012Mar21 || N || 0 21 || 1.2 || 5 04 || 6.3 || 9 46 || down || 3.9 || 3.1 || 2.1
 +
|-
 
| 2012Apr5 || F || 1 25 || 1.3 || 5 58 || down || 10 31 || down || 2.9 || 2.0 || 1.1
 
| 2012Apr5 || F || 1 25 || 1.3 || 5 58 || down || 10 31 || down || 2.9 || 2.0 || 1.1
 +
|-
 
| 2012Apr20 || N || 2 30 || 1.5 || 6 54 || down || 11 17 || down || 1.8 || 1.0 || 0.0
 
| 2012Apr20 || N || 2 30 || 1.5 || 6 54 || down || 11 17 || down || 1.8 || 1.0 || 0.0
 +
|-
 
| 2012May5 || F || 3 37 || 2.1 || 7 51 || down || -11 56 || down || 0.7 || 0.0 || 0.0
 
| 2012May5 || F || 3 37 || 2.1 || 7 51 || down || -11 56 || down || 0.7 || 0.0 || 0.0
 +
|-
 
| 2012May20 || N || 4 45 || 4.3 || 8 50 || down || -11 05 || down || 0.0 || 0.0 || 0.0
 
| 2012May20 || N || 4 45 || 4.3 || 8 50 || down || -11 05 || down || 0.0 || 0.0 || 0.0
 +
|-
 
| 2012Jun3 || F || 5 47 || down || 9 47 || down || -10 14 || down || 0.0 || 0.0 || 0.0
 
| 2012Jun3 || F || 5 47 || down || 9 47 || down || -10 14 || down || 0.0 || 0.0 || 0.0
 +
|-
 
| 2012Jun18 || N || 6 52 || down || 10 49 || down || -9 14 || down || 0.0 || 0.0 || 0.0
 
| 2012Jun18 || N || 6 52 || down || 10 49 || down || -9 14 || down || 0.0 || 0.0 || 0.0
 +
|-
 
| 2012Jul2 || F || 7 49 || down || 11 47 || down || -8 15 || down || 0.0 || 0.0 || 0.0
 
| 2012Jul2 || F || 7 49 || down || 11 47 || down || -8 15 || down || 0.0 || 0.0 || 0.0
 +
|-
 
| 2012Jul18 || N || 8 48 || down || -11 08 || down || -7 04 || down || 0.0 || 0.0 || 0.0
 
| 2012Jul18 || N || 8 48 || down || -11 08 || down || -7 04 || down || 0.0 || 0.0 || 0.0
 +
|-
 
| 2012Aug1 || F || 9 36 || down || -10 13 || down || -6 01 || down || 0.0 || 0.0 || 0.0
 
| 2012Aug1 || F || 9 36 || down || -10 13 || down || -6 01 || down || 0.0 || 0.0 || 0.0
 +
|-
 
| 2012Aug16 || N || 10 24 || down || -9 16 || down || -4 55 || 5.2 || 0.0 || 0.0 || 0.0
 
| 2012Aug16 || N || 10 24 || down || -9 16 || down || -4 55 || 5.2 || 0.0 || 0.0 || 0.0
 +
|-
 
| 2012Aug30 || F || 11 06 || down || -8 24 || down || -3 54 || 2.4 || 0.4 || 0.0 || 0.0
 
| 2012Aug30 || F || 11 06 || down || -8 24 || down || -3 54 || 2.4 || 0.4 || 0.0 || 0.0
 +
|-
 
| 2012Sep15 || N || 11 53 || down || -7 27 || down || -2 46 || 1.6 || 1.5 || 0.7 || 0.0
 
| 2012Sep15 || N || 11 53 || down || -7 27 || down || -2 46 || 1.6 || 1.5 || 0.7 || 0.0
 +
|-
 
| 2012Sep29 || F || -11 25 || down || -6 36 || down || -1 48 || 1.3 || 2.5 || 1.7 || 0.7
 
| 2012Sep29 || F || -11 25 || down || -6 36 || down || -1 48 || 1.3 || 2.5 || 1.7 || 0.7
 +
|-
 
| 2012Oct14 || N || -10 38 || down || -5 41 || v.low || -0 45 || 1.2 || 3.5 || 2.7 || 1.7
 
| 2012Oct14 || N || -10 38 || down || -5 41 || v.low || -0 45 || 1.2 || 3.5 || 2.7 || 1.7
 +
|-
 
| 2012Oct28 || F || -9 51 || down || -4 48 || 4.6 || 0 15 || 1.2 || 4.5 || 3.7 || 2.7
 
| 2012Oct28 || F || -9 51 || down || -4 48 || 4.6 || 0 15 || 1.2 || 4.5 || 3.7 || 2.7
 +
|-
 
| 2012Nov12 || N || -8 57 || down || -3 49 || 2.3 || 1 20 || 1.3 || 5.6 || 4.8 || 3.8
 
| 2012Nov12 || N || -8 57 || down || -3 49 || 2.3 || 1 20 || 1.3 || 5.6 || 4.8 || 3.8
 +
|-
 
| 2012Nov27 || F || -7 58 || down || -2 46 || 1.6 || 2 26 || 1.5 || 6.7 || 5.9 || 4.9
 
| 2012Nov27 || F || -7 58 || down || -2 46 || 1.6 || 2 26 || 1.5 || 6.7 || 5.9 || 4.9
 +
|-
 
| 2012Dec12 || N || -6 54 || down || -1 40 || 1.3 || 3 34 || 2.1 || 7.8 || 6.9 || 5.0
 
| 2012Dec12 || N || -6 54 || down || -1 40 || 1.3 || 3 34 || 2.1 || 7.8 || 6.9 || 5.0
 +
|-
 
| 2012Dec27 || F || -5 48 || down || -0 34 || 1.2 || 4 41 || 4.1 || 8.5 || 6.9 || 5.0
 
| 2012Dec27 || F || -5 48 || down || -0 34 || 1.2 || 4 41 || 4.1 || 8.5 || 6.9 || 5.0
 +
|-
 
| 2013Jan10 || N || -4 45 || 4.3 || 0 28 || 1.2 || 5 40 || 81.1 || 8.5 || 6.9 || 5.0
 
| 2013Jan10 || N || -4 45 || 4.3 || 0 28 || 1.2 || 5 40 || 81.1 || 8.5 || 6.9 || 5.0
 
|}
 
|}

Revision as of 21:01, 23 January 2012

Constraints for ground-based observing

Please ignore this page until this notice is removed. [BA 1/23/2012].

Introduction

Seasonal observability (not sure this is an actual word) for an astronomical object refers to times of the year when that object is above a certain viewable height at night. In other words, you can see it easily. It is above your local horizon in the hours between sunset and sunrise. And, it is "sufficiently above" the horizon. When the object is low on the horizon, your line of sight will pass through much more atmosphere (air) compared to a line of sight looking straight up. The less airmass you see, the better the photometric quality of your observation. Hence, "sufficiently above" means its above the limit for the amount of air/atmosphere you are willing to tolerate.

See:

Most observatories have written their own code to calculate seasonal visibility. I used this one:

Seasonal Observability for BRC 27

RA & dec: 7 01 37.9, -11 18 48, epoch 1950.0 Site long&lat: 10 21 53.2 (h.m.s) West, 19 49 36 North.

BRC 27
2012Feb6 F -2 48 1.6 2 17 1.4 7 22 down 7.1 6.2 5.0
2012Feb21 N -1 43 1.3 3 16 1.9 8 14 down 6.0 5.2 4.2
2012Mar7 F -0 39 1.2 4 12 2.9 9 03 down 4.9 4.1 3.1
2012Mar21 N 0 21 1.2 5 04 6.3 9 46 down 3.9 3.1 2.1
2012Apr5 F 1 25 1.3 5 58 down 10 31 down 2.9 2.0 1.1
2012Apr20 N 2 30 1.5 6 54 down 11 17 down 1.8 1.0 0.0
2012May5 F 3 37 2.1 7 51 down -11 56 down 0.7 0.0 0.0
2012May20 N 4 45 4.3 8 50 down -11 05 down 0.0 0.0 0.0
2012Jun3 F 5 47 down 9 47 down -10 14 down 0.0 0.0 0.0
2012Jun18 N 6 52 down 10 49 down -9 14 down 0.0 0.0 0.0
2012Jul2 F 7 49 down 11 47 down -8 15 down 0.0 0.0 0.0
2012Jul18 N 8 48 down -11 08 down -7 04 down 0.0 0.0 0.0
2012Aug1 F 9 36 down -10 13 down -6 01 down 0.0 0.0 0.0
2012Aug16 N 10 24 down -9 16 down -4 55 5.2 0.0 0.0 0.0
2012Aug30 F 11 06 down -8 24 down -3 54 2.4 0.4 0.0 0.0
2012Sep15 N 11 53 down -7 27 down -2 46 1.6 1.5 0.7 0.0
2012Sep29 F -11 25 down -6 36 down -1 48 1.3 2.5 1.7 0.7
2012Oct14 N -10 38 down -5 41 v.low -0 45 1.2 3.5 2.7 1.7
2012Oct28 F -9 51 down -4 48 4.6 0 15 1.2 4.5 3.7 2.7
2012Nov12 N -8 57 down -3 49 2.3 1 20 1.3 5.6 4.8 3.8
2012Nov27 F -7 58 down -2 46 1.6 2 26 1.5 6.7 5.9 4.9
2012Dec12 N -6 54 down -1 40 1.3 3 34 2.1 7.8 6.9 5.0
2012Dec27 F -5 48 down -0 34 1.2 4 41 4.1 8.5 6.9 5.0
2013Jan10 N -4 45 4.3 0 28 1.2 5 40 81.1 8.5 6.9 5.0
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