somebody have made the spectrum of a camera flash bulb or electronic flash probaly some kind of neon or magnesium but still interesting jack 47'N 71'O...
Hi, I think this page will help you to compare your spectras http://ioannis.virtualcomposer2000.com/spectroscope/amici.html#colorphotos Alberto ... De: Olivier...
Found a Xenon spectrum. http://www.pti-nj.com/xe.gif It shows the faint lines in the blue and a surprising (for me at least) amount of radiation in the IR. ...
http://www.supernovae.net/sn2007/sn2007af.html Currently at mag 13.5, this type 1a Supernova in NGC5584 should easily be recorded using a Star Analyser and an...
on and other group they have a discussion about the spectro of a lser diode spectro qhit surious result but they used complex lent and grating and blade BUT ...
Spectroscopy is an important tool used in identifying what these objects are. At mag 7.4 this is an easy target for a long exposure camera and the Star...
Well I got a spectrum of this on Thursday night near maximum at mag 13. It is a type 1a (a white dwarf which got a severe case of indigestion and exploded...
Hello group, I've been working with my Star Analyser several nights since January. I have readily captured FIT images of spectra using my SBIG ST-7XE CCD...
Hi Gary, Bearing in mind I am currently using an 8 bit webcam based imager (though I have just upgraded to a 16 bit camera), this is my work flow when I am...
Hello Robin, Thank you very much for the detailed reply. Your notes will certainly help me advance along the learning curve. I have been working with another...
Hi Gary, I see what you mean about finding it difficult to identify the Balmer lines in SAO 79794. The H beta and gamma lines at least should be quite clear....
Hello again, Actually I used your file containing the Delta Cas plot to help/attempt to recognize the calibration of SAO 79794. I'll take a look the 109 Vir...
Hi Gary, I think I might have found the cause of your resolution problem. If the Star Analyser is only 0.63 inches (16mm) from the CCD, the dispersion will be...
Robin, From calibrated results I determine the dispersion to be ~31A/pixel using unbinned images and roughly twice that number for 2X2 binned images. Assuming...
Hi Gary ... ~31A/pixel ... OK so the distance must be about 1.15 inches 0.65 inches to the filter wheel face and another 0.5 inches to the centre of the...
Hello again, Will do...the atmospheric conditions in my area have been far from ideal for high resolution imaging. One other issue when imaging bright stars...
Hello again, Will do...the atmospheric conditions in my area have been far from ideal for high resolution imaging. One other issue when imaging bright stars...
... Hi Gary, Thanks for uploading those. It does look like a focussing problem on the SAO star at least. The zero order is definitely out of focus as you can...
Hello Robin, I uploaded a new attempt at a reference spectrum for SAO79794. I focused on the surrounding stars rather than the spectrum itself. I have not...
Hi Gary, The Balmer lines are still not as clear as I had expected but I think I can identify a couple with enough certainty to get a calibration (32.95A/pixel...
Hi Robin, Thanks for looking at the image and sharing the calibrated plot. I'll try a few more class A stars to see if this the soft lines are a pattern with...
I am in the process to make something very curious make a photo of the moon whit a scnner I have this edeal for long time and now I have the oportunity BUT my...
Hi Gary, I had a go at SAO79794 myself the other night and the Balmer lines were not much clearer than you got even with the 16.77 A/pixel my setup gives, so...
I see this table about the min and max of algol star http://www2.globetrotter.net/faaq/ephemerides/algol.htm mybe the spectro change also somebody can tel us...
Hi Jaques, I think you will will see very little change at Star Analyser resolution as the mix of the spectra of the two stars is dominated by the more...
I upped the f/ratio of my 30cm SCT to ~f/3 to hopefully better match tighter star images to the 5.5micron camera pixels but it results in severe aberrations...
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