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Evolution in low resolution (R≈730) during the last four days.

Last night´s. Resolution around 720. Flux calibrated

QW Sge a couple of nights ago. Photometry shows it is still abi high but i guess i missed the outburst.
Vmag around 12.

Thanks, Robin.

I was missing the step "First crop the bad regions by double clicking either side of them."
David Boyd pointed me to this and then again your instructions are crystal clear!

My processing seems to be fully working at last.

I understand the procedure. I reckon it can not be done in the "profile" tab.
In "calibration" tab there is a "response assistant" button. Using this seems to work pretty well.

I tried and obtained this comparison between the result and the Mile's spectrum.
Comparison.jpg

I am not sure if this ...

If i crop out the telluric lines area, the final spectrum will not show that area neither.

Demetra does not crop it out. It just smoothes that area with a filter, i guess. I can also use a filter in ISIS but it will smooth the whole response spectrum, not just an area.
With Demetra, the final ...

Hello.

I am still fighting to fully understand how to use ISIS. I found another problem.
After processing the spectrum, i get the telluric lines at the red part of the spectrum as emision lines, obviously wrong.
In the next image, the blue filter, processed with ISIS shows some of those lines. On ...

Hello.

I unchecked the optimal binning and now it works perfectly even processing all the 170 spectra.
Checking optimal binning and setting a rejection office above 30 also works, but unchecking it results look better!


Thanks Robin.

Here are four raw images.
https://www.dropbox.com/sh/8zsdy7i5v4k9ymn/AACdLNOWHx5cQAql8rrYPSwba?dl=0

The ones ending in 20 and 22 give good results.
The ones ending in 33 and 38 are the problematic ones.

I could not attach them here so i am including a link to my Dropbox where the images are for ...

Thanks, Robin.

Optimal binning is checked.

Saturation also was checked. The images are very far from saturation.

I am not using the cosmic filter. I did many tests with different levels but results are worse always in many spectra. Besides, in Astrosurf manual says, regarding the cosmic filter ...