...
- The different centeroids will be available in the final jupyter notebook.
- The fixed focus before the trials start:
That was the best I got at the limited time. It still gave decent sources. - Focus when I checked to see what went wrong around midnight:
At that point, it looked good which was shocking but it may have been slightly tilted. I readjusted the focus when I went up just in case. - The final state of the pegboard after readjustment:
I am aware I should have documented the final focus as well. I unfortunately did not. It had looked okay and I wanted to get out of the dome to not have any background light while the observations were running. - A possible camera issue: The camera names files from 0 9999. After it reaches 9999 it goes back to 0. If we get more than 10000 photos in a run, that may be a problem because the files with the same name will be in the same directory. I can try to write a python script to add some sort of an additional extension or time stamp to the names of the file.
12/14/22: Day
...
7:
- Plan for the day:
- Take the time stamps of all the files, reorganize the files in a way that we only use good files.
- Make it very clear in jupyter notebook what I did.
- Run the analysis.
- If additional time, work to make DIMSUM sturdier.
From Stubbs:
Ok sounds like a partial success. I think the key think is to get a good dome-closed vs. dome-open comparison.
I don't understand the longer exposures. Is that with a single flash per image? If so then all the longer images would seem to do is add to the background and not the signal. Or are you running with constant light source?
I can certainly believe that dome rotation shakes things- During most image the dome is not rotating.
The focus change could well be due to temperature change of the lens. I can't remember if there is an f-stop ring on that lens or not... I think not. The depth of focus will increase if you make a smaller aperture in front of the lens. There is heavy duty Aluminum foil in the cardboard fan box at the base of the pier. You could try making a snout with a 1 inch off-axis hole and see if that (with reducing ND filter) helps with focus.
...