Thanks for responding Christian, I am most appreciative of all the work you do and the time you spend responding to myself and others. Unfortunately for you, your work is so thought provoking; I can't resist trying to fully understand it!
Similarly, thanks to Robin for his comments and the time he spends helping others.
Regards Andrew
ISIS 5.2.1 version (for Alpy 600 and more)
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Andrew Smith
- Posts: 321
- Joined: Fri Sep 30, 2011 12:23 pm
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Christian Buil
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- Joined: Mon Sep 26, 2011 6:59 pm
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Re: ISIS 5.2.1 version (for Alpy 600 and more)
Your comments are source of motivation for me.
A very valuable and constructive discussion!
Also a note about the importance of guiding for recover good continuum and photometric quality:
Alpy 600 observation of a V=12 star with a short focal length telescope D=212 mm F/4.
The slit wide is 5.6 arc sec and the seeing is 4 arcsec. Correct configuration.
(Atik314 l+ guiding camera, 15 sec. exposure).
Here during guiding phase:
The exposure now is 2 seconds. The target star is now invisible on the slit.
I use an auxiliary star for guiding - the base technique for me (Audela software).
Christian
A very valuable and constructive discussion!
Also a note about the importance of guiding for recover good continuum and photometric quality:
Alpy 600 observation of a V=12 star with a short focal length telescope D=212 mm F/4.
The slit wide is 5.6 arc sec and the seeing is 4 arcsec. Correct configuration.
(Atik314 l+ guiding camera, 15 sec. exposure).
Here during guiding phase:
The exposure now is 2 seconds. The target star is now invisible on the slit.
I use an auxiliary star for guiding - the base technique for me (Audela software).
Christian