Log Book Entry No.59

Days, Calendar Created: 08 Dec 2014 18:54:23 Days, Calendar Last Revised: 08 Dec 2014 20:37:10 Person SimonWoeginger Text 8/12/2014 SW/LN Observations

IDEA! 8th December Observatins

Start time 18:00

Conditions: Varied from good and clear to a little hazy which had an effect on exposures.


  • Deneb (alpha cyg) - Used for alignment and tracking purposes
Magnitude - 1.25

CCD cooler hadn't been running long so visible ring present.

  • M39 open cluster.
Magnitude 4.60

Worked with Focuser Max to explore the effects of being out of focus. Varied focus by +-5000 of origional position to see effects of being too out of focus (stars take on donut like shape). Fine tuning steps of 500 were taken in and out of focus to produce a sharper image.

Observation showing out of focus and in focus m39 are attatched to this log.

Back to: LogBookAstronomy

  • m39_15s_exposure:

Subject 8/12/2014 SW/LN Observations
Status blank
Topic attachments
I Attachment History Action Size Date Who Comment
Compressed Zip archivezip 20141208_SW_LN.zip r1 manage 37399.6 K 08 Dec 2014 - 20:37 SimonWoeginger  
PNGpng m39_15s_screenshot.PNG r1 manage 228.7 K 08 Dec 2014 - 20:33 SimonWoeginger m39_15s_exposure
Edit | Attach | Watch | Print version | History: r5 < r4 < r3 < r2 < r1 | Backlinks | Raw View | Raw edit | More topic actions...

Physics WebpagesRHUL WebpagesCampus Connect • Royal Holloway, University of London, Egham, Surrey TW20 0EX; Tel/Fax +44 (0)1784 434455/437520

Topic revision: r2 - 08 Dec 2014 - SimonWoeginger

  • Edit
  • Attach
This site is powered by the TWiki collaboration platform Powered by PerlCopyright © 2008-2022 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