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Orpington Astronomical Society

Astronomy => Astrophotography => Topic started by: Whitters on Mar 04, 2003, 07:26:00

Title: It was Clear Sunday ! NGC4565 aka Caldwell 38
Post by: Whitters on Mar 04, 2003, 07:26:00
(http://homepage.ntlworld.com/paul_whitmarsh/Astronomy/Images/MX916/March_03_2003/NGC4565small.png)
On the laptop screen the galaxy arms streach almost from the top to the bottom of the field some 17'.
Taken with C8 at f6.3 10 x 73sec exposures.
Please let me know if it doesn't look so long on your screen sometimes the ttf laptop screen gives better details at low brightmess levels than glass screens.

[ This Message was edited by: whitters on 2003-03-03 23:32 ]

[ This Message was edited by: Whitters on 2003-03-05 16:45 ]
Title: It was Clear Sunday ! NGC4565 aka Caldwell 38
Post by: Ian on Mar 04, 2003, 16:21:00
looking good!
Is your C8 one of the fast ones or are you using a focal reducer?

Ian
Title: It was Clear Sunday ! NGC4565 aka Caldwell 38
Post by: Whitters on Mar 04, 2003, 16:42:00
Using a focal reducer.
Title: It was Clear Sunday ! NGC4565 aka Caldwell 38
Post by: Whitters on Mar 04, 2003, 16:43:00
Also now looking at the image here at work, the length of the arms are reduced by the difference in the way the glass screens reporoduce the image.
Title: It was Clear Sunday ! NGC4565 aka Caldwell 38
Post by: Whitters on Mar 05, 2003, 07:03:00
Played with brightness settings on a glass display.

(http://homepage.ntlworld.com/paul_whitmarsh/Astronomy/Images/MX916/March_03_2003/ngc4565streach.png)



[ This Message was edited by: whitters on 2003-03-04 23:07 ]
Title: It was Clear Sunday ! NGC4565 aka Caldwell 38
Post by: Rick on Mar 05, 2003, 18:40:00
Has the previous version vanished?
Title: It was Clear Sunday ! NGC4565 aka Caldwell 38
Post by: Ian on Mar 05, 2003, 20:05:00
certainly looks like it. I preferred the other, but then I am using a TFT screen :smile:
Title: It was Clear Sunday ! NGC4565 aka Caldwell 38
Post by: Whitters on Mar 06, 2003, 00:45:00
Try it now boys.
Title: It was Clear Sunday ! NGC4565 aka Caldwell 38
Post by: Rick on Mar 06, 2003, 00:55:00
That's better! Thanks. :wink:
Title: It was Clear Sunday ! NGC4565 aka Caldwell 38
Post by: Whitters on Mar 06, 2003, 17:09:00
To give some scale the height of the frame is just over 1/4 of a degree thats hald the apparent diameter of the moon, this is a huge object in the sky.
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