si j'ai un disque qui tourne a 4000 Tour par minute le disque a 5 cm de diamètre et il y a un mirroir placé a 45 degre sur le bord extérieur la lumière...
Hello Jaques, The edge of the wheel moves at 0.05*pi*4000/60) = 10.5 m/sec. The speed of light is 3x10^9m/sec The maximum wavelength shift of the reflected...
ADDITION the spectro of whit led is like this http://en.wikipedia.org/wiki/Image:White_LED.png easy to see and compared jack47'N 71'W Subject: [staranalyser]...
ok the only 5m blade is a turbine of 747 or some other like this maybe a reflexion from is ok a crazy project ok I give up thank to spend your time on my...
Hi Jacques Thats a spectrum of a cool white LED. There exist also warm white LEDs that have a less strong emission peak in the blue and a higher YAG reemission...
and other way is to used 2 grinder weel and a big lfat mirror on both like the setup photo I put in photo section the multiple reflexion may help in this case...
A questioner wants to know where she can find a simple explanation of R as in Resolution or a grating/spectroscope. Maybe there should be a table or two under...
some light at the end of tube I buy a faster grinder air type at 20,000 Tpm this could help a lot probaly nex week test jack 47'N 71'W and other way is to used...
Hi Jerry, Someone has already done the job for us in Wikipedia :-) http://en.wikipedia.org/wiki/Spectral_resolution The only thing I would add is that delta...
... I see. Small page. BTW congrats on your AAVSO/BAA meeting. Sounds like it was very good and productive. I still think we need to put some forumlae together...
Hi Jerry, I have never used the database facility in Yahoo groups but I am happy to host it if you would like to start the ball rolling. This is everyone's...
Hi all, Taking up Jerry's suggestion I have started a database of FAQ in the database section of the group. If you usually receive posts by e-mail, you will...
OK I have started this database and added 4 sections. The capabilities of Yahoo groups database seem to be very rudimentary - ordered alphabetically by the...
Hello. I'm absolutely new in spectroscopy and without experience in CCD. I have a DSI pro and just waiting to receive the star analyser. Please recomend me...
Welcome on board!! I think you will find many/ most of us use IRIS for acquisition and definately Vspec for analysis. With the DSI Pro, I'm not sure what file...
Xavier, to start spectroscopy with a Star Analyser, I would actually recommend three software (all free): 1/ Gimp to change geometry so your spectrum is...
Hello group, I managed to capture a few SA images of Nova V2491 early this morning. The 30 second images were taken with an SBIG ST-7XE CCD camera using a 10"...
Gary, Just as a tutorial, I have downloaded your raw file (NovaCygV2491-20081415.JPG). I loaded it in IRIS software and I wrote ... /Note: regarding L_ROT: the...
Hello Olivier, Thank you very much for the tutorial. I have often struggled with preparation steps prior to vSpec. The tutorial steps will be very useful going...
Gary, I like the sigma-kappa addition which sum all signal except crazy values (cosmic or strong noise for exemple). But you can star with a simple addition...
hello, last night i have taken an image of the nova spectrum with the star analyser, canon d350, 8" sct meade on EQ6 ; i shoot several frames and this one is a...
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...
Apr 16, 2008 2:41 pm
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Olivier, I bias corrected and summed 10 subframes of 30 seconds each. I then applied your tutorial steps in Iris to the summed image followed by a calibration...
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