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Deneb at a higher resolution

spectroscopy

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#1 Astrobodger

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Posted 08 May 2013 - 12:29 AM

Hi Guys,

 

Here are some early results with my latest 'astro-bodge', a medium/high resolution spectrometer using a 1200 l/mm reflection grating.

 

Infrared region

post01.png

 

Ha region

post02.png

 

and Sodium doublet region

post03.png

 

Still needs some tweaking, but looks potentially useful?

 

Thanks for looking

 

John


Celestron 8" F5 Newt on EQ5

Spectrographs 300 l/mm & 1200 l/mm, SA100

Mammut L429, Canon 1000d, Canon 450d

 

http://uk.groups.yah...up/astrobodger/


#2 DENEB

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Posted 08 May 2013 - 06:01 AM

Thanks for sharing that John...



#3 gasman

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Posted 08 May 2013 - 07:18 AM

Pretty impressive John,thanks for posting it .:-) 

Steve



#4 astrodoc71

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Posted 08 May 2013 - 10:37 AM

Hmmm. 1200/mm. I would say that's a little more than useful! Nicely done John.

Regards

Dave


daveandtelescope.wordpress.com


#5 Starlock

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Posted 08 May 2013 - 01:40 PM

Hi John, thanks for posting, the absorption lines look very clear but for those of us who don't know much about Spectroscopy would it be possible to write a little description with the graphs just clarifying what the graphs tell you about the star and how the graphs are useful? it might help promote amateur spectroscopy if people get a better grasp of what it all means :)

 

keep them coming:)

 

Chris



#6 astrodoc71

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Posted 08 May 2013 - 03:50 PM

That's a good point Chris. I will add a new "basic spectro" thread for the members which can be used as a reference for future posts. The ones we have now deal mainly with equipment issues but not the underlying science.
Regards
Dave

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#7 Starlock

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Posted 08 May 2013 - 04:46 PM

Sounds just the job Dave, I look forward to reading it :)



#8 Astrobodger

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Posted 13 May 2013 - 02:18 PM

Thanks for the kind comments.

It does get a bit more tricky as the resolution increases, but I think I have the hang of it now.

The snag is that this spectrometer has cannibalised parts from the 300 l/mm. Got another 50mm F1.8 lens on order!

cheers
John

 


Celestron 8" F5 Newt on EQ5

Spectrographs 300 l/mm & 1200 l/mm, SA100

Mammut L429, Canon 1000d, Canon 450d

 

http://uk.groups.yah...up/astrobodger/






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