Hi Folks Just taken and processed a spectrum of Delta Vir (in Steve`s folder) last night and have some Hydrogen lines superimposed on it. A few peaks show...
... has ... Hi Jerry and Steve, (Only just realised it was you on ukastroimaging - doh!) My experiment was a sort of "halfway house" to a proper system with a...
... folder) ... think ... is ... starts ... Hi Steve, Look good. Del Vir is a cool M3 iv type star (The broad lines are due to molecules which can form in the...
... Yes. I had seen this arrangement (page) before but could not recall where. I always marvel and smile at Robin being on top of things - this is good. The...
... Beautiful! Or a scaled down version of this would be perhaps more appropriate for the SA. On the practical side, there is just so much one can or should do...
... Yes indeed. The eyepiece was just a source of a converging lens of suitable focal length and decent quality. I have put ray diagrams in the files section...
... Thanks for the reply Robin. I think as a novice at Spectroscopy it is tempting to - 1 - Be a little over ambitious with Photoshop and maybe add noise which...
... using ... Balmer ... more ... would ... the ... which ... emission ... library says ... and ... what ... Hi Steve, Don't be put off though. Your Del Vir...
Hi Folks Just taken spectra of Vega (A0V type), Regulus (B7V type), Altair (A7V type) and aOph (A5111 type) (in Steve`s album) and surprised how similar their...
Hi Steve, Those look like excellent spectra. It is a bit difficult to make out the detail in your plots though as they come out rather small in the photo...
is it possible to make and avi of a spectro when it is too large or when the grating is too far from the webcam and the image is too large. maybe in this case...
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 : /Steve`s...
staranalyser@yahoogro...
Jun 6, 2007 10:15 pm
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Hi Robin I`ve sent this spectrum comparison jpeg to `Steve`s file` in the Files section. I have started using just the cropped telescope image and not bothered...
May be by having the camera moved perpendicularly to the optical axis, with a device such as this http://www.us-astro.com/XYF.htm (I've never tried it). Michel...
I thing about that inthe return from my astro club and mybe the solution is very easy just let derivated and record slowly I test this way to do and report...
Hi Steve, They are still a bit small to see clearly I am afraid. Did you save the original spc files that Vspec produces by any chance? If you upload them, I...
Hi Jaques, That is how I made my high resolution solar spectrum using a webcam and the LHIRES III. http://mysite.wanadoo-members.co.uk/astro2/spectra_28.htm ...
Note Jaques that there is not much advantage to be gained from increasing the length of the spectrum unless you use extra optics to produce a collimated light...
Hi Michel, You could get the same effect by moving the telescope to move the star off to one side of the field. This will bring different parts of the spectrum...
Hello, SZ Mon is a pulsating supergiant with a period of 33 days. The B-V color varies by 0.3 mag during the pulsational cycle. I took 6 spectra with a...
Michel, Interesting project... The blue/red variation you see may also be from differences in air mass. If you look at the same star but lower on horizon ...
Hi Olivier, Michel, Yes it would be interesting to use the same technique as is used for photometry and divide the spectrum by that of a nearby constant star ...
Hi Olivier, Robin, I am trying to correct my spectra by the one from a nearby star. Thank you very much for the suggestion. Michel http://mbond.free.fr...
in the photos section in the D.I.Y. grating section you can see the first test whit lead diode from a head light somebody can tel if it is possible to do...
The photo shows a continuous spectrum spanning from blue to red. I thought that the spectrum of a diode would be made of discrete lines? The spectrum is only...
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