Greetings Solar Friends,
Today was a poor day for imaging, fierce winds made the seeing impossible. But I have a backup plan. The Solar spectrograph is finished and and fully operational now. I wish to share with you some of the first results with this instrument on the Sun, and then a few other scans to demonstrate its capability.
For all these images and graphs, the spectrograph used the low resolution 300 lines per mm grating. This yeilds a 15 A resolution over the full span from UV to IR. It takes 3 - 5 shots to cover the full spectrum. The focus changes depending on wavelength. The IR focus is way different than the UV focus! All shots DMK31 camera...
Here is a shot just before I painted in the inside flat black showing the optical train for this f/4 spectrograph:
SO lets start with this initial result, 3 images over the visual band, constrained by the Baader UV/IR blocker to omit the rather extensive and un interesting IR:
Ive labeled the interesting details that our solar minds desire.
Next, a five part composite of the full range from just below 400nm on the left including Cak, H and to the right is deep in the IR:
Note that I gain only a bit in the UV without the blocker filter, but tons in the IR! Nearly all those bands there are from the earths atmosphere, including gasses and water vapor. And at 800nm, something strange occurs - the UV from the second order spectrum starts superimposing it self on the first order. You must be careful in this area! (If you block the Visible and UV you can clean it up)
Now using a superb piece of software I bought (cheap but not free) called RSPEC, I can scan the images and produce spectral graphs I can then label and generate a color spectrum image below the graph:
Here is the final hard earned effort for my big solar spectrum, a plot made in Rspec that is labled and calibrated for wavelength:
Light source corrected filter scan, Lumicon Halpha filter:
Note the color image below it showing its narrow red band.
When you do filter scans, you use a Quartz Halogen lamp for a source, because it has all wavelengths available. First you image the lamp (avi file) the the filter. In RSPEC you divide the lamp into the filter scan to get the final filter response. Now look at the left edge of the graphs - thats the actual transmission of the filter, with 1 = 100%.
Here is another, a Lumicon H beta filter:
Note the huge red leak! obviously a visual filter.
a wratten 92 red gel filter, since many solar imagers use these for boosting solar details and contrast in poor seeing:
This is a Lumicon Swan band filter, for imaging and viewing the CN emissions in comets:
I will be posting many more on my web site, Ill post the link later when Im finished uploading them!
Also I have ordered another Imaging Source camera. OPT had a sale on the color version of the DMK41, and i got THE LAST ONE. I want to be able to do some spectra color imaging for solar, and with Mars coming...
Well, this is my first results with this new tool, and I want all of you to learn along with me some of the details of yet another exciting aspect of solar imaging and observing!
Thanks for looking. Comments Appreated...
Chris
First "Official" Solar Spectrograph Images are here!
First "Official" Solar Spectrograph Images are here!
Last edited by Cschur on Sun Mar 16, 2014 1:25 am, edited 3 times in total.
Chris Schur
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Birch Mesa Observatory, Payson Arizona
Clear Creek Canyon Observatory, Happy Jack, Arizona
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Birch Mesa Observatory, Payson Arizona
Clear Creek Canyon Observatory, Happy Jack, Arizona
Re: First "Official" Solar Spectrograph Images are here!
hi chris, very interesting results, looking forward to more
Michael Buxton
Ocean Beach, California
Ocean Beach, California
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Re: First "Official" Solar Spectrograph Images are here!
Great stuff Chris! Keep us updated as it develops
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
Re: First "Official" Solar Spectrograph Images are here!
Phenominal - good clean data there too!
I've just been setting up ready for a first solar light myself this morning!
Nick
I've just been setting up ready for a first solar light myself this morning!
Nick
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Re: First "Official" Solar Spectrograph Images are here!
Thats very good Chris now you can check all your filters as well.
Re: First "Official" Solar Spectrograph Images are here!
Thank You Micheal, Mark, Nick, and Derek! I am gearing up for a solar spectrum now with the as of yet untested 600 lpmm grating. Here is the good news - tuesday Ill be getting a brand new Imaging Source color camera - the color equivelent of the DMK41. This will be used for solar spectrum images and will add much excite ment in the form of color to them!
Chris
Chris
Chris Schur
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Birch Mesa Observatory, Payson Arizona
Clear Creek Canyon Observatory, Happy Jack, Arizona
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Birch Mesa Observatory, Payson Arizona
Clear Creek Canyon Observatory, Happy Jack, Arizona
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Re: First "Official" Solar Spectrograph Images are here!
Well done Chris...spectra look amazing
Brian
Brian
Brian Colville
Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
Maple Ridge Observatory
Cambray, ON Canada
Photos: https://www.flickr.com/photos/185395281@N08/albums
10'x15 Roll-off Roof Observatory
Takahashi EM400 Mount carrying:
C14 + Lunt 80ED
Deep Sky Work - ASI294MM Pro+EFW 7x36/Canon 60D (Ha mod), ONAG
Planetary Work - SBIG CFW10, ASI462MM
2.2m Diameter Dome
iOptron CEM70G Mount carrying:
Orion EON 130ED, f7 OTA for Day & Night Use
Ha Setup: Lunt LS80PT/LS75FHa/B1200Ha + Home Brew Lunt Double Stack/B1800Ha on the Orion OTA + Daystar Quantum
WL, G-Band & CaK Setup: Lunt Wedge & Lunt B1800CaK, Baader K-Line and Altair 2nm G-Band filter
ASI1600MM, ASI432MM, ASI294MM Pro, ASI174MM, ASI462MM
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Re: First "Official" Solar Spectrograph Images are here!
Hi Chris
congratulations
congratulations
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE
from 7 am - 7 pm http://www.nanosys.ch
from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa
from 7 am - 7 pm http://www.nanosys.ch
from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa
Re: First "Official" Solar Spectrograph Images are here!
Thanks Brian and Walter! This has been a long difficult road for me, this is the third version I have done, and happily this one works fine. Merlin66 has infinite patience!
Chris
Chris
Chris Schur
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Birch Mesa Observatory, Payson Arizona
Clear Creek Canyon Observatory, Happy Jack, Arizona
----------------------------------
Birch Mesa Observatory, Payson Arizona
Clear Creek Canyon Observatory, Happy Jack, Arizona