Hi Ken - although it doesn't directly answer your query I 'picture' the illumination of a transmission grating in the convergent beam of a telescope like this...
Gavin, A very good illustration of the problem/ solution! My difficulty was accepting that only a relatively small number of the available lines are producing...
At mag 14 currently, this supernova should just be in range of the Star Analyser from a reasonably dark site and a CCD astro camera. It is type 1a (the...
Thanks Robin - that's two mags fainter than you example in 11m exposure so about 60m exp needed for this new SNe which begs the question - How low can the...
Hi Maurice, In this case the signal/noise at mag12.5 was easily good enough to identify it as type 1a. I have a few examples of fainter spectra but it does...
Hi Robin - recorded the SN tonight under a bright gibbous moon via my 70mm f/5 ETX but only the field and no spectra attempted. It may be a difficult spectral...
Ah yes, that's a tough one. Those three stars are very close. I guess by orientation the grating vertically in the image you might possibly be able to split...
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...
Dec 10, 2008 7:14 pm
1344
good evening, on 03 dec. 2008 I took the spectrum of eps Auriga how ? with the proposition from Robin: The Canon D350 with objective 200 mm and the SA fixed on...
Hello Dominique, can you tell me what angs/pixel you achieved with your setup? I agree with your comments that this method of capturing spectra is very quick...
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...
Dec 11, 2008 7:10 am
1347
good morning, i send the image of eps Auriga in the user files of the group(11dec 2008) the dispersion is 3.25 Ä/px i have not other spectra of calibration...
Hello Dominique, I have overlaid my spectrum (and a spectrum from OHP) on yours and put the result in your folder. The Sodium line is at 5890 (Actually 2 lines...
good evening, i wish an calibrated and corrected spectrum and some documentation about identification of the lines of the spectrum of venus. I have took one...
I'm sure Robin will give more detail. For the eyepiece projection housing, any of the Orion/ Celestron etc would probably do. It's basically holding the...
Hi Alexandros, I added the eyepiece to allow me to use a slit. The eyepiece is used to focus the image of the slit onto the CCD. The telescope focus is then ...
Thank you all for your help . Â You have helped me a lot . Â Â I might add a wedge prism as well . Â I' ll start making the plans and as soon as my semester...
video from '450D, 40D for spectro more definition and more cesitivity maybe better spectro this come from astrocam french group a russian built a soft for make...
Snowed in in London so did this mock - used a positive focal reducer before grating and ex-cine lens to image spectrum onto sensor so light through grating is...
Hi all, I teach all levels of astronomy here at a small college outside of Philadelphia, USA, and I recently became of the Star Analyser and so thought I would...
Hi Eric, While I have not had teaching experience with the Star Analyser, I do have some using experience. The great thing about the Star Analyser is that it...
Hi Eric, Welcome to the group. Yes there are some educational users around. (I have used it myself in teaching an adult education introductory astrophysics...
Hi Eric, I use sensitive video cameras (like the Mintron 12V1E-EX, aka Stellacam EX) with a C8 and f3.3 focal reducer for outreach. This setup can "see"...
... Mounting the Star Analyser after the focal reducer also works fine provided you do not go too low in FR.(and is physically easier to do with the typical...
Hi Nytecam, I expect you are well and truly snowed in now (luckily we have escaped the worst of it in this corner of the UK so far) but I wondered if you got...
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