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Marian
登録日: 2015.10.12 記事: 8
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日時: Wed Aug 16, 2023 8:57 pm 記事の件名: |
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Hi everyone,
After a long break, I started observing spectral meteors again.Very interesting to read this thread, lots of useful information.
I have different equipment now. Color Night Vision F0.95 StarLight Lens AHD-H (1080P) 1/2.8" STARVIS IMX327 NVP2441, Diffraction Grating Holographic Glass 1000 lines. This is my best Perseid spectrum of 2023.
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Bill W
登録日: 2012.02.13 記事: 189 所在地: Glasgow
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日時: Tue May 28, 2024 1:37 am 記事の件名: |
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Hi,
Thats a great colour spectrum! I had a look online and there are several suppliers offering that type of camera. Where did you get yours? I'd like to try one with a longer focal length lens.
Thanks,
Bill.
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Bill W
登録日: 2012.02.13 記事: 189 所在地: Glasgow
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日時: Thu Dec 05, 2024 5:22 am 記事の件名: 2nd order fireball spectrum |
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Hi all,
I've been getting some incredible results on my High Resolution Meteor Spectroscopy (HiReMS) cameras.
This one was a really lucky catch as I got the 2nd order from ~400nm to 595nm.
I've counted ~185 lines in the original image. The vast majority are from iron atoms with Cr, V, Ca, Mg and of course the sodium doublet!
I'm still not 100% sure that I've removed all of the overlap lines but it's still the best meteor spectrum I've seen!
Best regards,
Bill.
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SonotaCo Site Admin
登録日: 2004.08.07 記事: 12980 所在地: 139.67E 35.65N
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日時: Thu Dec 05, 2024 7:00 am 記事の件名: Re: 2nd order fireball spectrum |
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Wow
Marian wrote: | Color Night Vision F0.95 StarLight Lens AHD-H (1080P) 1/2.8" STARVIS IMX327 NVP2441, Diffraction Grating Holographic Glass 1000 lines. |
What is the focal length of the lens?
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Bill W
登録日: 2012.02.13 記事: 189 所在地: Glasgow
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日時: Thu Dec 05, 2024 9:23 am 記事の件名: |
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Hi,
It's a 25mm f1.3 cctv lens for 1 inch sensor with a 600 line/mm grating.
I'm lucky that it was bright enough to give a good second order spectrum.
Cheers,
Bill.
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Bill W
登録日: 2012.02.13 記事: 189 所在地: Glasgow
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日時: Thu Dec 05, 2024 9:39 am 記事の件名: |
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Hi All,
Here is a different version of the synthetic spectrum thats done in sections so it doesn't look so cluttered.
Cheers,
Bill.
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前田
登録日: 2004.09.01 記事: 2839 所在地: Miyazai JAPAN (E131.4, N31.8)
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日時: Fri Dec 13, 2024 8:24 pm 記事の件名: |
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Hi Bill,
Thanks for the great spectrum.
When you can capture higher-order spectra, you'll achieve better resolution, which is great!
I think your system is great in that there is very little aberration in the lens from blue to violet. The resolution will be even better at 1080p if it can be increased further.
Koji
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