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Messages 531 - 564 of 1652   Oldest  |  < Older  |  Newer >  |  Newest
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531
I would love to if it was a bit nearer. That is the trouble with the BAA, if you live anywhere north of the Wash :-( Robin...
staranalyser
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Jun 2, 2006
12:25 pm
532
... That's a shame, would have liked to meet you. And pick your brain about spectroscopes. I've acquired a Celestron off-axis guider and a reflection grating...
Brendan Shaw
brendanshawuk
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Jun 2, 2006
4:21 pm
533
Good news for Visual Spec users! Valerie Desnoux has opened a section for Visual Spec support on the new ARAS (Astronomical Ring for Spectroscopy Amateurs)...
staranalyser
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Jun 4, 2006
3:55 pm
534
I see on and other group somebody asking about somebody near him in toronto and I finaly find a freind near him in hamilton maybe I am loky also and find a...
Jacques Savard
suppjos
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Jun 10, 2006
5:27 pm
536
... Sorry for delay Brendan - haven't logged on lately<g>. No detailed plans are available for the WPO spectrograph but the principles with many sample...
nytecam
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Jun 12, 2006
11:00 pm
538
Maurice has done fantastic work in spectroscopy (he and Christian Buil basically invented amateur spectroscopy!), but he's wrong here on an important fact....
Harold Nations
nations_ha
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Jun 13, 2006
5:18 am
540
Thanks for the correction Harold - I transposed resolution for dispersion! That said my results did reveal higher resolution with a long lens as my sample...
nytecam
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Jun 13, 2006
8:49 am
541
... The only thing I've been unsure about (so far!) is whether the grating needs to be mounted square-on to the camera lens, or whether it has to tip forward...
Brendan Shaw
brendanshawuk
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Jun 13, 2006
2:48 pm
542
Hi, I am new to espectrography. I'd like to have a spectrograph but they are expensives. From what I have read, it seems the StarAnalizer device could do the ...
Pedro Pastor
fi_151314
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Jun 13, 2006
7:04 pm
544
... they ... Not as expensive as an ST-10 :)) ... I'm sure Robin can give the definitive answer, but I think the further away you have the StarAnalyser from...
Brendan Shaw
brendanshawuk
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Jun 14, 2006
2:51 pm
545
Hi Pedro, The Star Analyser is a low resolution spectrograph (around 30-50A resolution) This means that the design can be much simpler than higher resolution...
staranalyser
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Jun 14, 2006
3:49 pm
546
Thank you Brendan and Brian, Brendan: Touche!! Yes the ST-10 is not a cheap one. The point is I have already invested so much money in my CCD astronomical...
Pedro Pastor
fi_151314
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Jun 14, 2006
4:47 pm
547
((((((Could you please shed some more light to me on how a proper Spectrograph works?)))))))))) go to this http://valerie.desnoux.free.fr/forum/index.php...
jacques savard
suppjos
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Jun 14, 2006
4:58 pm
548
Hi Pedro, ... This was exactly what the Star Analyser was designed to do but it can do some quite impressive things that a "proper" higher resolution...
staranalyser
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Jun 14, 2006
11:01 pm
549
Hi Robin, Thank you very much for your clear explanation. Abusing on your patience, I'd like to pose you one more question. What happens when using...
Pedro Pastor
fi_151314
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Jun 15, 2006
8:19 pm
550
No problem Pedro, The spectrum is just a very narrow strip which is extracted from the image. As long as no other stars lie on this line, you are ok and this...
staranalyser
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Jun 16, 2006
10:25 am
551
Hi folks, Is it sometimes useful in spectroscopy to have a G2V star in the imaged field? The reason I'm asking is that I might embark on a little project to ...
Robin Lauryssen-Mitch...
robin73732
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Jun 22, 2006
4:47 pm
552
Hi Robin, With the Star Analyser I like to find a nearby A or F star. The strong H Balmer lines are useful to check the calibration. I suppose a G2V star could...
staranalyser
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Jun 22, 2006
7:55 pm
553
Hi all, I'm new to the group. The ESA's Smart-1 probe is scheduled to impact the lunar surface about 10 degrees south of Mare Humorum on September 3, 2006 at...
Richard Evans
revans_01420
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Jun 24, 2006
7:58 pm
554
... imaged ... project to ... As an applet or something, do you mean? I guess it would be useful to have something that finds the nearest stars of spectral...
Brendan Shaw
brendanshawuk
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Jun 24, 2006
9:40 pm
555
Hi Rick, That sounds like an interesting project. I don't think an image intensifier would work though because, as I understand it, the process involves...
staranalyser
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Jun 24, 2006
10:27 pm
556
... Actually scrub that, I was talking rubbish ;-). The dispersion into a spectrum is done before the intensifier of course so you can record the spectrum...
staranalyser
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Jun 24, 2006
10:45 pm
557
the staranalyse is a 100L\mm is a grating of 600L\mm help or give better result or maybe 1200L\mm do you have a similar taget where we ca make testing jack...
jacques savard
suppjos
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Jun 24, 2006
11:15 pm
558
Robin, Yes, I think an image intensifier might be the only way to proceed with a project like this but the ones without hot pixels are very expensive. I might...
Richard Evans
revans_01420
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Jun 25, 2006
1:34 am
559
I'm new to this but without a slit I don't think the chip would accomodate that much resolution... Rick ... 1200L\mm ... <staranalyser@> ... light ... into a ...
Richard Evans
revans_01420
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Jun 25, 2006
1:36 am
560
Hi Jaques,Richard 600l/mm would give too much dispersion to record the whole spectrum in one go, which is what you would want to do for this type of event....
staranalyser
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Jun 25, 2006
4:20 pm
561
Anyone had a look at Chi Cygni recently? It is just comming up to maximum and it seems to brighter than previous maxima at mag 3.7 It is a Mira variable which...
staranalyser
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Jul 31, 2006
1:03 pm
562
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the staranalyser group. File :...
staranalyser@yahoogro...
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Aug 2, 2006
2:22 pm
563
... I've been watching it in my bins, very bright, very red. ... Got a shot of it last night - quite why I didn't think of doing this before your post, I don't...
Brendan Shaw
brendanshawuk
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Aug 2, 2006
2:29 pm
564
...is posted at http://home.freeuk.com/m.gavin/driftsp.htm via my Canon Rebel[=300D] and undriven 4" Meade SCT with Rainbow grating [similar to StarAnalyser]...
nytecam
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Sep 2, 2006
2:36 pm
Messages 531 - 564 of 1652   Oldest  |  < Older  |  Newer >  |  Newest
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