Astronomy, Photography and Weather
August 12, 2022, 03:03:00 am
Welcome, Guest. Please login or register.

Login with username, password and session length
News: IAA lecture programme continues alternate Wednesdays from September - an excellent programme of lectures- Queens University Belfast - Bell Lecture Theatre. Also keep an eye out for the Summer Events
 
  Home Help Search Gallery Staff List Login Register  

2010/2011 winter eclipses

Pages: 1 2 3 [4]
  Print  
Author Topic: 2010/2011 winter eclipses  (Read 1238 times)
Roman White
Hero Member
*****
Posts: 1479


Poltava, Ukraine


View Profile WWW
« Reply #45 on: January 08, 2011, 07:18:18 pm »

Thanks Andy,

Here are the results of my photometry:
Have taken consequtive shots of the same (northern) area of the sky with equal exposure and without expocompensation. At the same time, I've noted the EV values displayed by camera (the ones that could probably be used).
(NB: as the Sun rised from 10 to 17, the atmosphere extinction changed from 4х to 2.5х)



First and third point from the graph above have been used for making this animation.



I said, I had some doubt whether the decrease of illumination was visible visually, but with help of camera it is evident!  Smiley
Report Spam   Logged

SkyWatcher 130/900mm EQ3, Bresser 76/700mm, 20x90 bino. and other, Olympus SP-550UZ
Eclipse & comet chaser, occultation & meteor observer
Poltava Astronomy Portal
markt
Hero Member
*****
Posts: 1416

West Midlands, UK


View Profile
« Reply #46 on: January 08, 2011, 09:41:34 pm »

Excellent work Roman!  Cool
Report Spam   Logged

Roman White
Hero Member
*****
Posts: 1479


Poltava, Ukraine


View Profile WWW
« Reply #47 on: January 09, 2011, 08:12:46 pm »

Thank you Mark

I have corrected the obscuration graph above with more accurate approximation.
Check this useful website: Eclipse Magnitude & Obscuration
Report Spam   Logged

SkyWatcher 130/900mm EQ3, Bresser 76/700mm, 20x90 bino. and other, Olympus SP-550UZ
Eclipse & comet chaser, occultation & meteor observer
Poltava Astronomy Portal
martinastro
Martin Mc Kenna
Global Moderator
Hero Member
*****
Posts: 5182


Maghera, N. Ireland


View Profile WWW
« Reply #48 on: January 09, 2011, 10:16:39 pm »

Excellent work Roman - very well captured. I love your attention to detail, that's always a sign of an exceptional observer.  Smiley
Report Spam   Logged



Pages: 1 2 3 [4]
  Print  
 
Jump to:  

Bookmark this site! | Upgrade This Forum
SMF For Free - Create your own Forum

Powered by SMF | SMF © 2016, Simple Machines
Privacy Policy