focus on emissionline by calibration spectrograph

Image processing, astrometry, photometry, etc.
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ebry
Posts: 2
Joined: 05 Jan 2020, 18:13

focus on emissionline by calibration spectrograph

Post by ebry » 05 Dec 2020, 09:22

Hi,

Is it possible in AA7 to focus on a calibration line of a spectrograph ? The intention is to focus the FWHM as small as possible with the spectrograph's internal focuser (no auto-focus). On a star this is perfectly possible, but apparently not on a line ? or am I wrong here ? Or is there a tip & trick how I can get this ? (I work with a LHiResIII spectrograph with grating 2400 l/mm) thanking in advance !

all the best
Erik

merlin66
Posts: 22
Joined: 08 Jan 2019, 05:38

Re: focus on emissionline by calibration spectrograph

Post by merlin66 » 05 Dec 2020, 15:51

Erik,
The focus routine already does this.
Check the Astroart Guide (F1) within Astroart and search on Focuser/ "Autofocus"

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