7/18/2019 Use the Following Scales for Astronomical Seeing and Transparency When Filling Out Your Observing Logs

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USE THE FOLLOWING SCALES FOR ASTRONOMICAL SEEING ANDTRANSPARENCY WHEN FILLING OUT YOUR OBSERVING LOGS.

v 0.1 31 Mac 2008

TRANSPARENCY SCALE

0. D N! O"#$%v$ - Completely cloudy or precipitating.

1. V$%& P% - Mostly Cloudy.

2. P% - Partly cloudy or heavy haze. 1 or 2 Little Dipper starsvisible.

3. S'$()a! C*$a% - Cirrus or moderate haze. 3 or Leostars visible.

+. Pa%!*& C*$a% - !light haze. or " Leo stars visible.

,. C*$a% - #o clouds. Mil$y %ay visible &ith averted vision. 'Little Dipper stars visible.

-. V$%& C*$a% - Mil$y %ay and M31 visible. ( Little Dipper starsvisible.

. E/!%$'$*& C*$a% - M33 and)or M*1 visible.

Ta"*$ 1.0 S& v#"*!&

BRIGHTNESS SCALE

Ma!45$6Comments

very bright stars

7+ +enus at its brightest

73 ,upiter at its brightest

72  !irius in Canis Maor the brightest star in the s$y

71 /etelgeuse in 0rion

0 +ega in Lyra

1 !pica in +irgo Deneb in Cygnus Pollu in emini

2 amal 4ries

3 Megrez the 5aintest star in the /ig Dipper

7/18/2019 Use the Following Scales for Astronomical Seeing and Transparency When Filling Out Your Observing Logs

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6+

, Probable na$ed eye limit in the suburbs

- Probable na$ed eye limit in the country

Ta"*$ 2.0 Ma!45$ 4$##!'a! #ca*$

7/18/2019 Use the Following Scales for Astronomical Seeing and Transparency When Filling Out Your Observing Logs

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W)a! ! 94! &4% a$5 $&$ "#$%va! *:

Date

 7ime

Location%eather condition8re5er to table 1.9:

0bect #umbering system

Direction

Magnitude guesstimation8re5er to table 2.9:

+ariable star

4tmospheric phenomena ; zodiacal light satellite etc

!$etching o5 

Constellation

Moon phases

Mil$y &ay visibility

Planet locations

Meteors

Comments