Search found 126 matches
- Thu Nov 22, 2018 2:15 pm
- Forum: Spectroscopes and Softwares
- Topic: Auto Atmosphere problem in ISIS
- Replies: 1
- Views: 2122
Auto Atmosphere problem in ISIS
Hi All, I am having an issue in ISIS when I check the Auto Atmosphere box in the General tab. While processing a spectrum with the Auto Atmosphere box checked, ISIS gets as far as “Divide by atmospheric transmission” and then stops with the error message that the atmo file cannot be found. However t...
- Wed Feb 14, 2018 1:15 pm
- Forum: Spectroscopes and Softwares
- Topic: Atik 460ex issue
- Replies: 3
- Views: 2832
Re: Atik 460ex issue
Thanks a bunch, Andrew. Looking at all of the graphs, the results appear to be very similar to what I found. I was puzzled at these results because I have seen posts from other Atik (314 and 460) users claiming their images are so clean that they do not use darks because their images are very clean ...
- Wed Feb 14, 2018 12:02 am
- Forum: Spectroscopes and Softwares
- Topic: Atik 460ex issue
- Replies: 3
- Views: 2832
Re: Atik 460ex issue
I see that the table on this message did not line up. I am trying to scan and attach a file, but my scanner is now giving me fits. More to come.
- Tue Feb 13, 2018 11:03 pm
- Forum: Spectroscopes and Softwares
- Topic: Atik 460ex issue
- Replies: 3
- Views: 2832
Atik 460ex issue
Hi, I recently purchased an Atik 460ex camera to replace my ST8Xme. In creating a master cosme file in ISIS I was quite surprised at my results and perhaps I am misinterpreting exactly what the cosme file is telling me. The table below shows a comparison of threshold values vs number of pixels above...
- Wed Dec 13, 2017 1:31 am
- Forum: Spectroscopes and Softwares
- Topic: Spectra Problems
- Replies: 14
- Views: 8919
Re: Spectra Problems
Hi Robin, Yes, I do know the purpose of flats as you described. I was just wondering if not using flats in the spectral processing routine would have any adverse effects on the final spectrum. I have actually not detected any, but I certainly could be missing something. I do use an IR curve (nearly ...
- Mon Dec 11, 2017 8:00 pm
- Forum: Spectroscopes and Softwares
- Topic: Spectra Problems
- Replies: 14
- Views: 8919
Re: Spectra Problems
Hi Robin, Yes, the IR curve is essentially a straight line. The irregularities occur with or without using the IR curve so apparently they are not caused by any interaction between the IR curve and the flat. I would like to try your suggestion of running ISIS using the XML file from a previous run. ...
- Sun Dec 10, 2017 8:20 pm
- Forum: Spectroscopes and Softwares
- Topic: Spectra Problems
- Replies: 14
- Views: 8919
Re: Spectra Problems
Hi Andrew, Yes, I have actually used different flats including the ones I used for each session all with the same results. It does appear as if I am knocking on the door to rectifying this strange behavior, but that door just refuses to open up - at least for now. Your suggestion helped to bring me ...
- Sun Dec 10, 2017 5:36 pm
- Forum: Spectroscopes and Softwares
- Topic: Spectra Problems
- Replies: 14
- Views: 8919
Re: Spectra Problems
I may be getting closer to the source of the issue. Andrew, I went through your suggestions and found one I had not tried – the one to retain all images in the processing routine and put them through their paces. Here are the results. No Flat Used: Individual @pro1.fit, @pro2.fit, etc files all good...
- Sun Dec 10, 2017 3:35 pm
- Forum: Spectroscopes and Softwares
- Topic: Spectra Problems
- Replies: 14
- Views: 8919
Re: Spectra Problems
Thank you Andrew and Robin for your replies. I agree that I have pretty much narrowed it down to processing. I have attached a zipped file (thanks Robin) containing the 2 images I could not originally upload. Image 1 is the result when the flat is applied. Image 2 is the image when no flat is used. ...
- Sat Dec 09, 2017 6:58 pm
- Forum: Spectroscopes and Softwares
- Topic: Spectra Problems
- Replies: 14
- Views: 8919
Spectra Problems
Hi All, i am sorry if this is a repeat post. thought I posted this earlier today but it did not appear in the forum. So I am making a second attempt. I have recently noticed a big change in my BeSS spectra that I am hoping someone can help me solve. A few weeks ago my spectra started having an undul...