second attempt caH and caK with open slit
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second attempt caH and caK with open slit
a bit cleaner than my first
used .ser files
interesting there is another line in there showing bright part of prom (its faint)
used .ser files
interesting there is another line in there showing bright part of prom (its faint)
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Re: second attempt caH and caK with open slit
That's interesting, can you work out which line this is?
Alexandra
Alexandra
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Re: second attempt caH and caK with open slit
I assume CaK is at the top? I don't see which other line you mean.
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Re: second attempt caH and caK with open slit
Hi,
That could be Hydrogen 4101.7Å. Counting the dark lines from bottom to top it is the 3rd one.
That could be Hydrogen 4101.7Å. Counting the dark lines from bottom to top it is the 3rd one.
regards Rainer
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
Observatorio Real de 14
San Luis Potosi Mexico
North 22° West 101°
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Re: second attempt caH and caK with open slit
Nice work,so tempted to try fitting my surplus shed adjustable slit into the Sol'Ex so as to have a try at this method.
Alun
Alun
Lunt 50THa solar scope
Lunt CaK B12 module
SW Evostar 72ED for full disk imaging
Sol'Ex SHG
80mm f/7 achromat used with pressure tune module off the Lunt with Lunt 100mm ERF
Bresser 90 f/10 achromat used for CaK & white light imaging & PST mod with Lunt 100mm ERF
Coronado SM40 (pre Meade) and BF10 filter set + SMII 60 richview DS etalon
Skywatcher EQ6 Pro and Ioptron CEM60
Then there is all the night kit which is far too long a list to write up here!
More images on view on my Flickr page...https://www.flickr.com/photos/alun_h/
Lunt CaK B12 module
SW Evostar 72ED for full disk imaging
Sol'Ex SHG
80mm f/7 achromat used with pressure tune module off the Lunt with Lunt 100mm ERF
Bresser 90 f/10 achromat used for CaK & white light imaging & PST mod with Lunt 100mm ERF
Coronado SM40 (pre Meade) and BF10 filter set + SMII 60 richview DS etalon
Skywatcher EQ6 Pro and Ioptron CEM60
Then there is all the night kit which is far too long a list to write up here!
More images on view on my Flickr page...https://www.flickr.com/photos/alun_h/
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Re: second attempt caH and caK with open slit
thx rsfoto I believe you are correct
to smiths - H is on top see that line below - thats Aluminum I
to smiths - H is on top see that line below - thats Aluminum I
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Re: second attempt caH and caK with open slit
Alun make sure you clean up edges of surplus shed before use
thats is what Im using
thats is what Im using
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Re: second attempt caH and caK with open slit
it's H gamma @ 410 nm ; dont forget that your spectroscope suffers from strong anamorphosis due to its configuration so the spectrum shrinks a bit...
Aluminium wouldnt show the prominences as clearly and brightly .
I noticed the same on my experiment :
Your results are getting better well done
Aluminium wouldnt show the prominences as clearly and brightly .
I noticed the same on my experiment :
Your results are getting better well done
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
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Re: second attempt caH and caK with open slit
What is the typical slit width you use? Is it different for different spectral lines?
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Re: second attempt caH and caK with open slit
my slit can open up to 3mm
about 1mm is average for Ha
HeD3 much less
so yes it depends on line thickness
Alun you will need to swap out grating - 2400 lpmm to high
im using 1200
Chris (who is IMHO expert on this) thinks 600 lpmm is better.
about 1mm is average for Ha
HeD3 much less
so yes it depends on line thickness
Alun you will need to swap out grating - 2400 lpmm to high
im using 1200
Chris (who is IMHO expert on this) thinks 600 lpmm is better.
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Re: second attempt caH and caK with open slit
Hello to Alun : yes 600 lines/mm is the best (not in visual though ; only when using a camera) .
Look at the prominence I captured today June 7th with the 600 lines and you'll be surprised at the definition
But if you wonna make a SHG then 1800 or 2400 lines will be best.
Look at the prominence I captured today June 7th with the 600 lines and you'll be surprised at the definition
But if you wonna make a SHG then 1800 or 2400 lines will be best.
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
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Re: second attempt caH and caK with open slit
You guys who do this should have a look at these slits: https://diy-optics.com/collections/used ... y-projects
He made some trial samples for me but could not get below 50 microns. They are laser cut, similar to ones from Thorlabs but much cheaper.
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Re: second attempt caH and caK with open slit
Chris,at the moment the Surplus shed slit needs some serious cleaning up of its edges as John has mentioned but 600l/mm grating is on the shopping list
along with the multitude of other items i need ) I have a 2400l/mm in my folded SHG at the moment.
Alun
along with the multitude of other items i need ) I have a 2400l/mm in my folded SHG at the moment.
Alun
Lunt 50THa solar scope
Lunt CaK B12 module
SW Evostar 72ED for full disk imaging
Sol'Ex SHG
80mm f/7 achromat used with pressure tune module off the Lunt with Lunt 100mm ERF
Bresser 90 f/10 achromat used for CaK & white light imaging & PST mod with Lunt 100mm ERF
Coronado SM40 (pre Meade) and BF10 filter set + SMII 60 richview DS etalon
Skywatcher EQ6 Pro and Ioptron CEM60
Then there is all the night kit which is far too long a list to write up here!
More images on view on my Flickr page...https://www.flickr.com/photos/alun_h/
Lunt CaK B12 module
SW Evostar 72ED for full disk imaging
Sol'Ex SHG
80mm f/7 achromat used with pressure tune module off the Lunt with Lunt 100mm ERF
Bresser 90 f/10 achromat used for CaK & white light imaging & PST mod with Lunt 100mm ERF
Coronado SM40 (pre Meade) and BF10 filter set + SMII 60 richview DS etalon
Skywatcher EQ6 Pro and Ioptron CEM60
Then there is all the night kit which is far too long a list to write up here!
More images on view on my Flickr page...https://www.flickr.com/photos/alun_h/