David's Astronomy Pages CCD Images - Session 46 (2003-07-19) Images (S45)   Images (Main)   Home Page   Images (S47)

Notes (S00046)

This imaging session was ancillary to main task of performing a polar realignment of the LX200 telescope. Only 20 CCD Images were taken over a period of 2 hours. 

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M57 (Ring Nebula)

M57  (Lyra)

Animated sequence of 7 CCD images,  10 sec exposures taken over 6 minutes, showing variability in sky transparency. 2003-07-19  23:05 to 23:11h UT (#46013-46019) 9.2 x 7.6 arc mins

Better images of M57 were recorded during the previous observing session on 2003-07-13

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 Defocused Star (Altair)

Defocussed star (Altair)

CCD image 2003-07-19   (#46009)

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Collimation

Simulated example of collimation problem,  created when adjusting collimation during previous session

CCD image (star field near Procyon) 2003-02-18   (#44001)

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