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  #1  
Old 19-04-2005, 08:27 PM
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frogman (Anthony Lord)
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First.... Observing Log

Tuesday 19/04/05

A few questions and yes, i am aware that i should have done 2 not just the one for two items...

Ok not quite clear enough.... the right "drawing" was M42 and the question should have baan which one is E and F i know where the two are now..

Anthony

Last edited by frogman; 19-04-2005 at 08:51 PM.
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Old 19-04-2005, 09:08 PM
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astro_south (Andrew)
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Nice work Anthony. Nice to see someone jumping in and using the template. Soon we will be providing some targets for next month (not compuslary of course) that is hoped to extend people's observing skills through recording details of targeted objects and comparisons with others.

To answer your question (and I am going from your diagram) - the "E" component is the one "above" the 4 main stars (above and inbetween "B" and "A". The "F" component is the lower extra star and is tucked in close to the "C" component.
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Old 19-04-2005, 09:53 PM
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frogman (Anthony Lord)
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sweet tah Andrew.. and the config of saturns moons is normal ?
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Old 19-04-2005, 10:43 PM
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Anthony, see pic.
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Click for full-size image (trapezium6x4.jpg)
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  #5  
Old 20-04-2005, 08:16 AM
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frogman (Anthony Lord)
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WOW so now i have to concentrate on G and H huh ???? but looking at the mag of them i think you'd prob. need a 20" to see them ...... and theres one coming on the 7th woo hoo

Anthony
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  #6  
Old 20-04-2005, 09:03 AM
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iceman (Mike)
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Great job Anthony, but yeah apart from using 2 sheets you're on the right track.

Great job using the template for what it's intended.
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Old 20-04-2005, 09:11 AM
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frogman (Anthony Lord)
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OK boys how do i work out my magnifications?????
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Old 20-04-2005, 09:27 AM
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[1ponders] (Paul)
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Divide your telescopes Focal length by the Focal length of your eyepiece. eg 1800 mm (only guessing) / 12.5 mm = 144X
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Old 20-04-2005, 09:33 AM
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frogman (Anthony Lord)
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Ok so that was at 120X
1500/12.5= 120X
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Old 20-04-2005, 10:13 AM
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ving (David)
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nice log!

well done spotting e and f
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  #11  
Old 20-04-2005, 10:18 AM
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frogman (Anthony Lord)
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wonder how good she'll be when she's collimated
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Old 20-04-2005, 10:24 AM
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trufflehunter (Wayne Robinson)
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you mean "when she's made straight"?
...couldn't resist!
Congrats on seeing the extra trapezium stars! Orion's disappeared behind my roof so I'll have to wait till next summer!

Good to see you're putting the 'grenade' to use too!!!
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Old 20-04-2005, 10:29 AM
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frogman (Anthony Lord)
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Truff are you coming on the 7th ? If so ill give you the rest of what i owe you if not could you PM or emaiul me with your account details and ill direct deposit it ..

Yeah straighten my baby !!

The grenade how does one clean the lense ??? or should i take it to a camera shop and get them to clean it ?


Anthny
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  #14  
Old 20-04-2005, 10:36 AM
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ving (David)
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sandpaper... NO NO NO!!!
just kidding!
DONOT USE SANDPAPER

search the forums, theres plenty on cleaning EPs
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  #15  
Old 20-04-2005, 10:42 AM
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frogman (Anthony Lord)
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HMMMM too late
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  #16  
Old 20-04-2005, 11:34 AM
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ving (David)
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bugger!
what can ya do huh

a reconstruction may be in order then

or wait till your next birthday and ask for one from mission control

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  #17  
Old 20-04-2005, 11:39 AM
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frogman (Anthony Lord)
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come on im green but im not that green !
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  #18  
Old 20-04-2005, 11:55 AM
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ving (David)
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green is my fav colour!
and you prolly know more than me anyhow
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  #19  
Old 20-04-2005, 01:03 PM
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trufflehunter (Wayne Robinson)
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Anthony... a nuvver fing...

Just noticed you quoted your FOV as 50deg on your observing log. That's the "Apparent Field of View". What you want is the "Actual Field of View" which is the Apparent Field of View divided by the Magnification. So with your 12.5mm ep giving a mag of 120X, the "Actual Field of View" is 0.42deg or 25 arcmins (60 arcminutes per degree)

You always see the abbreviation AFOV but I can never figure out if the A means 'Actual' or 'Apparent' !!! But it keeps me on my toes and makes me feel like singing.
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