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Fireball Spectrum
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前田



登録日: 2004.09.01
記事: 2066
所在地: Miyazai JAPAN (E131.4, N31.8)

記事日時: Thu Dec 05, 2019 9:14 pm    記事の件名: amazing 引用付きで返信

Hi Bill

This spectrum is amazing. I have seen the meteor spectrum of iron in the short wavelength region in the first time. And the resolution is also excellent.

Koji
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Martin Dubs



登録日: 2014.03.04
記事: 51

記事日時: Fri May 15, 2020 6:35 am    記事の件名: 引用付きで返信

Hi,

I have been working on my Python script for processing meteor spectra. I added a user interface, which allows more flexibility in the processing than the original pipeline. The script is described here:

https://meteorspectroscopy.org/
Look for the last post, Meteor spectra analysis, new version, the direct link does not seem to work. If you are interested, please send me a note.
I also processed my spectra of 2019 with the new script and attached the list here. I abridged it somewhat to fit the size for attachments. A complete version is available here:
http://www.meteorastronomie.ch/images/20191231_Meteorspectra.pdf

Clear skies,

Martin



m_spec calibration.PNG
 説明:
Python user interface for calibration of meteor spectra
 ファイルサイズ:  57.88 KB
 閲覧数:  2405 回

m_spec calibration.PNG



m_spec plot spectrum.PNG
 説明:
calibrated spectrum
 ファイルサイズ:  28.5 KB
 閲覧数:  2405 回

m_spec plot spectrum.PNG



Meteor spectra 2019short.pdf
 説明:
List of meteor spectra observed at Maienfeld 2019

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 ファイル名:  Meteor spectra 2019short.pdf
 ファイルサイズ:  1.97 MB
 ダウンロード回数:  99 回

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前田



登録日: 2004.09.01
記事: 2066
所在地: Miyazai JAPAN (E131.4, N31.8)

記事日時: Sun May 31, 2020 10:40 am    記事の件名: 引用付きで返信

Hi, Martin

Thank you for showing the new spectrum catalog.
I downloaded the PDF file.

It is wonderful that your new version of spectrum analysis program has been worked well.
How work the program handle images that appear to be saturated?

Thank you,

Koji MAEDA
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Martin Dubs



登録日: 2014.03.04
記事: 51

記事日時: Thu Jun 04, 2020 6:38 pm    記事の件名: 引用付きで返信

Hi Koji,

nice to hear from you and our interest in my spectra. With respect to spectra with saturated pixels. This is not implemented in the present program. At the moment I add some tools to improve the program handling and plotting, but since the interest for processing saturated seems rather limited so far, I do not intend to implement this in the new program. Maybe later.

Best regards,

Martin

Sonotaco,
I have a problem replying in the forum. Some normal text is not accepted, with error 403, forbidden Sad , so I had to remove part of the answer. What is the cause?



sonotaco error.PNG
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sonotaco error.PNG


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SonotaCo
Site Admin


登録日: 2004.08.07
記事: 10644
所在地: 139.67E 35.65N

記事日時: Fri Jun 05, 2020 7:07 am    記事の件名: 引用付きで返信

Martin Dubs wrote:
Sonotaco,
I have a problem replying in the forum. Some normal text is not accepted, with error 403, forbidden Sad , so I had to remove part of the answer. What is the cause?

This problem has been occurring from time to time since the upgrade of the server.
I don't know the cause yet, but I believe it's due to the server mistakenly blocking transfers containing certain strings from a security standpoint.
Please let me know if you can identify the string that causes it.
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Martin Dubs



登録日: 2014.03.04
記事: 51

記事日時: Fri Jun 05, 2020 4:15 pm    記事の件名: 引用付きで返信

Quote:
Please let me know if you can identify the string that causes it.

I tried to figure out what is causing the problem, but sending the part I was cutting out seems not to make a problem . Very strange. In addition, it did not contain anything special, just plain text:
Quote:
What you can do is select the spectra manually for the addition and then process these further. What you can also do, is to process the video files with the program m_pipe7 to eliminate images with saturated pixels, applying tilt and slant corrections and adding the rows. Then use the new program for post processing (calibrating, plotting) the spectra.
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SonotaCo
Site Admin


登録日: 2004.08.07
記事: 10644
所在地: 139.67E 35.65N

記事日時: Fri Jun 05, 2020 7:00 pm    記事の件名: 引用付きで返信

Martin Dubs wrote:

I tried to figure out what is causing the problem, but sending the part I was cutting out seems not to make a problem . Very strange. In addition, it did not contain anything special, just plain text:]

Thank you for testing. I will continue the searching of the reason.
This web site opened on 7/Aug/2004. The server environments have changed dramatically in this 15 years. It became too complex to understand. Wink
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Bill W



登録日: 2012.02.13
記事: 163
所在地: Glasgow

記事日時: Sun Aug 09, 2020 7:40 am    記事の件名: 引用付きで返信

Hi,
I've been trying to post a results but also have been experiencing the "forbidden" error.
I will try again.
Here is a nice Perseid spectrum from earlier today.
It spans ~360 to 900 nm and is well dispersed.
Best regards,
Bill.



20200808_fireball.png
 説明:
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20200808_fireball.png


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SonotaCo
Site Admin


登録日: 2004.08.07
記事: 10644
所在地: 139.67E 35.65N

記事日時: Sun Aug 09, 2020 9:34 am    記事の件名: 引用付きで返信

Bill W wrote:
I've been trying to post a results but also have been experiencing the "forbidden" error.

So sorry. It seems version up of server system causes this troubles, but I could not find the reason yet.
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ts007



登録日: 2004.08.09
記事: 3514
所在地: 埼玉県

記事日時: Sun Aug 09, 2020 9:59 pm    記事の件名: Perseid spectrum. 引用付きで返信

Hi, Bill.

It's a wonderful spectrum. I also want to see still images. I lined it up with my Perseid spectrum.

This fireball can be seen at the following site.
http://sonotaco.jp/forum/viewtopic.php?t=4642

Resuts of spectral 201810-202005

meteornews(https://www.meteornews.net/2020/07/24/results-of-spectral-observations-of-meteor-showers-and-sporadic-meteors-from-october-2018-until-may-2020/)

http://sonotaco.jp/forum/viewtopic.php?t=4637

Resuts of spectral 201812-201912Gemnids

meteor news。https://www.meteornews.net/2020/04/01/results-of-spectral-observations-of-the-geminids-meteor-shower-in-december-2019/

http://sonotaco.jp/forum/viewtopic.php?t=4555

I also tried linking, but many times I got the same error. I made it by linking like this.

Resuts of spectral 201810-202005
meteornews([url]https://www.meteornews.net/2020/07/24/results-of-spectral-observations-of-meteor-showers-and-sporadic-meteors-from-october-2018-until-may -2020/[/url])

takashi sekiguchi



20200803_000534Per-5specandBillper.png
 説明:
Perseid spectrum.
 ファイルサイズ:  44.9 KB
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20200803_000534Per-5specandBillper.png


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Bill W



登録日: 2012.02.13
記事: 163
所在地: Glasgow

記事日時: Mon Aug 10, 2020 3:54 am    記事の件名: 引用付きで返信

Hi,

That looks great!

I caught another extraordinary spectrum last night. From observations by members of the NEMETODE group it looks like a -3.2 Alpha Capricornid.
This is the highest resolution spectrum I have ever captured and probably the highest ever for a meteor from the UK let alone an Alpha Cap anywhere.

The Mg triplet is fully resolved and the Na doublet is split also!
This was a section of the third order and shows the group of Fe/Cr and Ca lines in the blue/green well.

Cheers,
Bill.



M20200809_002653_UKKilwinning_P_3rd order_annot.jpg
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M20200809_002653_UKKilwinning_P_3rd order_annot.jpg


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前田



登録日: 2004.09.01
記事: 2066
所在地: Miyazai JAPAN (E131.4, N31.8)

記事日時: Mon Aug 10, 2020 10:31 pm    記事の件名: 引用付きで返信

Hi Bill,

Thank you for your high-resolution spectrum.
Many explosion fireballs belong CAP were seen here this year.

In a monochrome video, the first time I saw a Na line separated spectrum.
See also the spectrum of my new a7s camera 4K + 50mm lens with 600 grooves grating.
It is a sporadic meteor taken the day before yesterday.
The mirror image was shown to match your spectral direction.

Best regards,
Koji



M20200809_035708_JPMZ1_HEPtrimdB.jpg
 説明:
This is the second order spectrum.
 ファイルサイズ:  88.54 KB
 閲覧数:  1081 回

M20200809_035708_JPMZ1_HEPtrimdB.jpg


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Bill W



登録日: 2012.02.13
記事: 163
所在地: Glasgow

記事日時: Tue Aug 11, 2020 1:56 am    記事の件名: 引用付きで返信

Hi,
That is a great result in colour. I prefer the monochrome because of the extended sensitivity into the near UV and IR.

I modified a Canon 350 when they came out with a broadband filter but it was not sensitive enough. Have you modified your Sony?

I think we can produce results better than the professionals now!

The weather is not looking so good for the next few nights but I hope I can still get some good high res Perseids

Cheers,
Bill Wink Very Happy
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前田



登録日: 2004.09.01
記事: 2066
所在地: Miyazai JAPAN (E131.4, N31.8)

記事日時: Wed Aug 12, 2020 12:02 am    記事の件名: 引用付きで返信

Hi,

What you say is correct. A monochrome camera has a wider wavelength range, and monochrome data analyzing is easier than colour one after observation. However, in terms of an absolute sensitivity, I do not know a consumer camera that is more sensitive than this one.
So, I have no choice but to use this camera.

The IR cut filter of my SONY camera remains. I can not remove myself.
If I remove the filter, we can observe up to about 800 nm. I also want to get a camera without an IR cut filter.


Since a Forbidden 403 error has occurred, the contents try to upload divided.
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前田



登録日: 2004.09.01
記事: 2066
所在地: Miyazai JAPAN (E131.4, N31.8)

記事日時: Wed Aug 12, 2020 12:04 am    記事の件名: Continued 引用付きで返信

The purpose of my recent spectral observations is to capture a possible darker spectrum of meteors. Even the same shower meteor may have different spectra depending on the brightness (mass).

That's why I started taking spectra from this July using a slightly longer focal length lens (50-85mm). High resolution is a byproduct of it, not its primary purpose. However, I like the high-resolution spectra because they are very beautiful!

clear sky,
Koji
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