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Author Topic: Supernova 2012aw: Spectrum.  (Read 5992 times)

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Offline Nomis Elfactem

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Re: Supernova 2012aw: Spectrum.
« Reply #15 on: 15:11:00, 01 April, 2012 »
Dave/Andrew - many many thanks for all the info guys !

I actually already have Kens first book and have just ordered his second so I'll have a re-read.

Right... lets go and order that Star Analyser and hunt down a suitably angled prism.....

S.
Simon

Scopes: Astro-Tech AT-111EDT Triplet, TS65ED Quad, Orion ST80, Modded PST-90 Solar Scope, PST Cak (on loan)
Cameras: SXVF H694, Atik 16ic, Canon EOS 600d, DMK41, DMK21, QHY 5L-II (mono & colour)
Accessories: SX USB Filter Wheel, SX OAG, Baader LRGB Ha SI OII Filters, SharpSky Focuser
Mount: EQ6 (EQMOD), SW Star Adventurer, plus a lot (and I mean a lot) of other bits and pieces

Offline joncarruthers

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Re: Supernova 2012aw: Spectrum.
« Reply #16 on: 08:51:54, 02 April, 2012 »
[quote/]

I've been looking to get into Spectroscopy for some time and had wondered about starting off with a SA grating.... I think you've just answered the question.

[/quote]

It needn't be a complex instrument to get started, a simple grating wedged in front of the camera sensor will show crude lines. I made a water filled wedge for my 6", then put a grating in a camera T mount, now I have a simple Litrow spectroscope.

As you can see, a major expense was the optical quality BluTac....

Offline Nomis Elfactem

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Re: Supernova 2012aw: Spectrum.
« Reply #17 on: 13:19:07, 02 April, 2012 »
Thanks for that John ! 

Well I took the plunge and ordered a SA at the weekend and am now just working out how to attach it to my Sigma 28-300 lens with my 600d. 

I get the feeling taking the images may be the "easy" bit.... processing, calibrating, displaying on the other hand.... I'm always up for a challenge though  :yes: :hurt:

S.
Simon

Scopes: Astro-Tech AT-111EDT Triplet, TS65ED Quad, Orion ST80, Modded PST-90 Solar Scope, PST Cak (on loan)
Cameras: SXVF H694, Atik 16ic, Canon EOS 600d, DMK41, DMK21, QHY 5L-II (mono & colour)
Accessories: SX USB Filter Wheel, SX OAG, Baader LRGB Ha SI OII Filters, SharpSky Focuser
Mount: EQ6 (EQMOD), SW Star Adventurer, plus a lot (and I mean a lot) of other bits and pieces

Offline joncarruthers

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Re: Supernova 2012aw: Spectrum.
« Reply #18 on: 14:22:23, 02 April, 2012 »
Vspec takes a bit of learning but Rspec can analyse in real time from a webcam/grating. Rspec also accepts many more image formats than Vspec. Vspec requires a .fits image (or .pic) in mono.
 There is a site you can upload a jpeg of a spectrum to and get a graph in seconds, can't find it at the moment....

Offline Merlin66

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Re: Supernova 2012aw: Spectrum.
« Reply #19 on: 18:49:19, 02 April, 2012 »
Simon,
You can actual get camera filter thread adaptors to 1.25" thread.
I think Tom Field (Rspec) sells them for 55mm filter threads....
Just screw in the grating, align it with the CCD chip and off you go!
C11, C9.25 SCT, 4" Genesis, NEQ6pro, modded 1000D,  ATik314L+, DMK41AF04, SM60DS/BF15, and Spectroscopes (many!).
http://tech.groups.yahoo.com/group/astronomical_spectroscopy/
"Astronomical Spectroscopy for Amateurs", "Grating Spectroscopes-How to Use them" -Springer

Offline Dave Grennan

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Re: Supernova 2012aw: Spectrum.
« Reply #20 on: 10:44:32, 24 April, 2012 »
 Hi Guys,

I managed a much more detailed session on Sne2012aw.  I wrote up the results with some commentary here;
http://www.webtreatz.com/index.php/articles/34-general-articles/88-spectrum-of-type-iip-supernova-2012aw

CS
Dave.
Regards and Clear Skies,

Dave.
------------------------------
http://www.webtreatz.com
14" f/3.8 Custom Newtonian, WO GT81 Refractor, AP1200 Mount, Atik 460EX, SBIG ST8-XME, Lodestar and a whole pile of other stuff!

Offline Nomis Elfactem

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Re: Supernova 2012aw: Spectrum.
« Reply #21 on: 15:10:10, 24 April, 2012 »
Really great work Dave  :clap: :urock: :thumbup:

Still waiting for some clear skies to give my SA it's first light.... doesn't look like it's going to be any time soon sadly  :'(

S.
Simon

Scopes: Astro-Tech AT-111EDT Triplet, TS65ED Quad, Orion ST80, Modded PST-90 Solar Scope, PST Cak (on loan)
Cameras: SXVF H694, Atik 16ic, Canon EOS 600d, DMK41, DMK21, QHY 5L-II (mono & colour)
Accessories: SX USB Filter Wheel, SX OAG, Baader LRGB Ha SI OII Filters, SharpSky Focuser
Mount: EQ6 (EQMOD), SW Star Adventurer, plus a lot (and I mean a lot) of other bits and pieces

Offline Merlin66

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Re: Supernova 2012aw: Spectrum.
« Reply #22 on: 02:52:00, 25 April, 2012 »
Simon, et al,
Have a look at David Howarth's site....
http://www.stargazing.net/david/misc/whatsnew.html
C11, C9.25 SCT, 4" Genesis, NEQ6pro, modded 1000D,  ATik314L+, DMK41AF04, SM60DS/BF15, and Spectroscopes (many!).
http://tech.groups.yahoo.com/group/astronomical_spectroscopy/
"Astronomical Spectroscopy for Amateurs", "Grating Spectroscopes-How to Use them" -Springer

 

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