Difference: LogBookAstronomyEntry0142 (1 vs. 2)

Revision 215 Mar 2017 - LewisWilkins

Line: 1 to 1
 
META TOPICPARENT name="LogBookAstronomy"

Log Book Entry No.142

Days, Calendar Created: 15 Mar 2017 19:46:56 Days, Calendar Last Revised: 16 Mar 2017 00:07:38 Person LaurieNevay Text H-Alpha observation
Line: 23 to 22
 
  • Andromeda 30s exposure
  • Andromeda 180s exposure - peak ADC 35000 - bkg 13000
  • Andromeda 400s exposure - no auto dark - h-alpha(woo!) - peak ADC 3200 - bkg 1900 - ratio is 13.0
Changed:
<
<

>
>
  • Cone nebula, tracking with main scope 0.5s
  • Cone nebula 400s - h-alpha - 4 exposures
  • Adjust autoguider to agressiveness 4 for last of 4 only.
  • Cooler to minus 20 - 72% power usage
  • 21:15
  • Cooler could only reach -23C - set back to -20 so it's not saturated. Let settle.
 

Revision 115 Mar 2017 - LewisWilkins

Line: 1 to 1
Added:
>
>
META TOPICPARENT name="LogBookAstronomy"

Log Book Entry No.142

Days, Calendar Created: 15 Mar 2017 19:46:56 Days, Calendar Last Revised: 16 Mar 2017 00:07:38 Person LaurieNevay Text H-Alpha observation

H-Alpha observation

  • Coolers on around 17:45
  • Visibility very good
  • Camera 1 -10C
  • Camera 2 -15C
  • Aligned to Alderbaran

Candidates

  • Andromeda
  • Orion
  • Cone
  • Rosette

  • Pinwheel - highest

Data

  • Andromeda 30s exposure
  • Andromeda 180s exposure - peak ADC 35000 - bkg 13000
  • Andromeda 400s exposure - no auto dark - h-alpha(woo!) - peak ADC 3200 - bkg 1900 - ratio is 13.0 

<-- 
Please DO NOT alter or remove the line below this line. 
    

  •  Set EDITMETHOD = wysiwyg

 
Please DO NOT alter or remove the line above this line.
-->

IDEA! Please edit and put your text etc. here

Back to: LogBookAstronomy

META FORM name="%25SYSTEMWEB%25.LogBookForm"
FORM FIELD Subject Subject H-Alpha observation
FORM FIELD Status Status blank
FORM FIELD Author Author TWikiGuest
View topic | History: r3 < r2 < r1 | More topic actions...
 
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2023 by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding RHUL Physics Department TWiki? Send feedback