Jump to content


Photo

Starting out in stellar spectroscopy

  • Please log in to reply
8 replies to this topic

#1 laprof

laprof

    Explorer 1

  • -----
  • Posts: 61
  • Joined: 24 Aug 2013
  • Loc: New Mexico

Posted 04 July 2014 - 12:08 PM

If I am in the wrong forum, I hope the moderator will reroute this post. I am considering a foray into amateur spectroscopy using my Celestron SC8 and/or my Meade AR6 refractor. I will be using my Canon 60DA for this. Since I haven't done this before, I don't want to dump a small fortune into startup stuff getting my feet wet. So...I'm looking primarily for equipment and software recommendations/advice (and anything else you might feel would be of help). I took a look online at the Paton Hawksley Star Analyser 100 (SA100) with the Rspec software. Anyone have any experience with it? All info greatly appreciated.

#2 old_frankland

old_frankland

    Mercury-Atlas

  • -----
  • Posts: 2616
  • Joined: 28 Mar 2005
  • Loc: San Francisco Bay Area

Posted 06 July 2014 - 01:03 AM

Indeed, precisely the place to start. The Star Analyzer 100 is not only an entry level system, but a very powerful tool for monitoring variable stars for outbursts and acquiring spectra of brighter novae and supernovae. Simply put, you won't outgrow it even if you go on to a higher resolution spectrograph. Also an outstanding tool for astronomy outreach.

I've spent quite a bit of time working with the SA100 using RSpec

http://www.lafterhal...ectroscopy.html

Definitely worth the price of admission!

#3 Ed Wiley

Ed Wiley

    Apollo

  • -----
  • Posts: 1047
  • Joined: 18 May 2005
  • Loc: Texas, USA

Posted 06 July 2014 - 12:16 PM

I agree with Jim!

#4 laprof

laprof

    Explorer 1

  • -----
  • Posts: 61
  • Joined: 24 Aug 2013
  • Loc: New Mexico

Posted 06 July 2014 - 01:04 PM

Jim and Ed.........Thanks much. I've read much about the SA100 with related software and I'm going with it. I'll be back posting on this forum after I get underway. :)

#5 Hubert

Hubert

    Mariner 2

  • -----
  • Posts: 254
  • Joined: 26 Sep 2006
  • Loc: Belgium

Posted 15 July 2014 - 12:00 PM

Hello, I'm also thinking about starting spectroscopy with the Staranalyzer 200. I have a C8 f6.3 and a Atik314L. I just don't know how to start with it. Is here someone how can point me in the right direction? I'm used to do photometry of variables but want to do more.

#6 old_frankland

old_frankland

    Mercury-Atlas

  • -----
  • Posts: 2616
  • Joined: 28 Mar 2005
  • Loc: San Francisco Bay Area

Posted 16 July 2014 - 10:46 AM

Hello, I'm also thinking about starting spectroscopy with the Staranalyzer 200. I have a C8 f6.3 and a Atik314L. I just don't know how to start with it. Is here someone how can point me in the right direction? I'm used to do photometry of variables but want to do more.


If you haven't already, these pages are worth a look see.

http://www.astrosurf...3/userguide.htm
http://www.astrosurf...nalyser/obs.htm
http://www.threehill...troscopy_11.htm

I've been using the SA100 for awhile now. It's pretty straight forward getting started with it either on a DSLR camera or with a telescope as you describe with CCD camera. If you're proficient with the CCD camera, you'll get results first time out. Go for it.

#7 Hubert

Hubert

    Mariner 2

  • -----
  • Posts: 254
  • Joined: 26 Sep 2006
  • Loc: Belgium

Posted 16 July 2014 - 11:53 AM

Thanks!

#8 Stephen Kennedy

Stephen Kennedy

    Ranger 4

  • -----
  • Posts: 300
  • Joined: 03 Jul 2014
  • Loc: California

Posted 25 August 2014 - 06:16 PM

I have had very good results with the R-Spec software and a Rainbow Optics spectroscope.  I acquire the spectra with my Canon T3 DSLR camera and my 210mm F/7 Mikage Newtonian reflector on a massive Pentax MS-5 GEM.  I screw the Rainbow Optics spectroscope into an Orthoscopic 18 mm eyepiece and use a High Point Scientific adapter that is designed to obtain images by eyepiece projection.  I get dispersion, according to the R-Spec software of about 4 angstroms per pixel.


Edited by Stephen Kennedy, 27 August 2014 - 08:58 PM.


#9 robin_astro

robin_astro

    Mariner 2

  • -----
  • Posts: 247
  • Joined: 18 Dec 2005

Posted 27 August 2014 - 01:14 PM

Hello, I'm also thinking about starting spectroscopy with the Staranalyzer 200. I have a C8 f6.3 and a Atik314L. I just don't know how to start with it. Is here someone how can point me in the right direction? I'm used to do photometry of variables but want to do more.

 

Hi Hubert,

 

That is a good setup for the Star Analyser (I originally developed the SA100  on an 8 inch f6 Vixen VC200L using a modified webcam and now use it at f6 with a Celestron C11 and ATIK 314.)  

 

Can I ask why you are planning to use the SA200 instead of the SA100 ? The reason I ask is the SA200 was developed for situations where the grating cannot easily be mounted far enough away from the camera for example in filter wheels or for large aperture long focal length scopes used with large sensors. If you can mount the SA100 at the best distance, this will give slightly better performance than the SA200.  Here is the calculator to help you work out the best distance 

http://www.patonhawk....uk/calculator/

There is more about the difference between SA100 and 200 here on my website.

http://www.threehill...troscopy_16.htm

and many other examples of using the Star Analyser there too

Take a look at Jim's site too which has  some excellent examples showing what can be done even with a small aperture

 

The Star Analyser manual has some tips to help you get started 

http://www.patonhawk.../resources.html

and there are also two Yahoo groups where you will find many Star Analyser users and can get support

"staranalyser" and  "RSpec_Real_Time_Spectroscopy"

 

 

HTH

Robin

www.threehillsobservatory.co.uk 


Edited by robin_astro, 27 August 2014 - 01:15 PM.







Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics