SHG shot caH caK for today
-
- Way More Fun to Share It!!
- Posts: 2033
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1204 times
-
- Way More Fun to Share It!!
- Posts: 2033
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1204 times
- Merlin66
- Librarian
- Posts: 3972
- Joined: Tue Dec 13, 2011 1:23 pm
- Location: Junortoun, Australia
- Has thanked: 174 times
- Been thanked: 619 times
- Contact:
Re: SHG shot caH caK for today
Well done, mate!
Looks like you're getting good results from the SHG.
Looks like you're getting good results from the SHG.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
- Montana
- Librarian
- Posts: 34722
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17974 times
- Been thanked: 8906 times
-
- Way More Fun to Share It!!
- Posts: 2033
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1204 times
Re: SHG shot caH caK for today
thx guys/gals I notice subtle differences between caK and caH
what is your opinion on difference?
I reprocessed
I have learned that even selecting exact line position on spectrum can effect outcome of image
caH redo notice little prom on right
what is your opinion on difference?
I reprocessed
I have learned that even selecting exact line position on spectrum can effect outcome of image
caH redo notice little prom on right
-
- Way More Fun to Share It!!
- Posts: 2033
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1204 times
-
- Way More Fun to Share It!!
- Posts: 2033
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1204 times
- Merlin66
- Librarian
- Posts: 3972
- Joined: Tue Dec 13, 2011 1:23 pm
- Location: Junortoun, Australia
- Has thanked: 174 times
- Been thanked: 619 times
- Contact:
Re: SHG shot caH caK for today
The calcium II lines form a pair of resonance lines, like the sodium doublet(D1 and D2).
According to Gray and Corbally "Stellar Spectral Classification" they "....grow with decreasing temperatures down to spectral type K5 (4500K)...." They, and the Sodium D1/D2, Magnesium I triplet, Halpha as well as the CaII triplet lines 8498/8542/8662A are used to determine chromosphere activity in stellar systems. Zirin and others seem to "prefer" observing in CaK but with no reasons given....
Summary- there's no real difference between K and H lines for data content.
According to Gray and Corbally "Stellar Spectral Classification" they "....grow with decreasing temperatures down to spectral type K5 (4500K)...." They, and the Sodium D1/D2, Magnesium I triplet, Halpha as well as the CaII triplet lines 8498/8542/8662A are used to determine chromosphere activity in stellar systems. Zirin and others seem to "prefer" observing in CaK but with no reasons given....
Summary- there's no real difference between K and H lines for data content.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
- MapleRidge
- Way More Fun to Share It!!
- Posts: 10257
- Joined: Fri Jan 13, 2012 11:58 pm
- Location: Cambray, ON Canada
- Has thanked: 64 times
- Been thanked: 4428 times
- Contact:
Re: SHG shot caH caK for today
Great images...well done!!!
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
- marktownley
- Librarian
- Posts: 42550
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20819 times
- Been thanked: 10489 times
- Contact:
Re: SHG shot caH caK for today
Good shots!
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!
- Merlin66
- Librarian
- Posts: 3972
- Joined: Tue Dec 13, 2011 1:23 pm
- Location: Junortoun, Australia
- Has thanked: 174 times
- Been thanked: 619 times
- Contact:
Re: SHG shot caH caK for today
J-P,
The possible interference between the CaH line (3968A) and the nearby Hepi line (3970A) seems to be at least part of the reason for the selection of the CaK for observers.
The possible interference between the CaH line (3968A) and the nearby Hepi line (3970A) seems to be at least part of the reason for the selection of the CaK for observers.
"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
https://groups.io/g/astronomicalspectroscopy
http://astronomicalspectroscopy.com
"Astronomical Spectroscopy for Amateurs" and
"Imaging Sunlight - using a digital spectroheliograph" - Springer
-
- Way More Fun to Share It!!
- Posts: 2033
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1204 times
- DSobserver
- Almost There...
- Posts: 582
- Joined: Sun Feb 19, 2012 2:36 pm
- Location: FRANCE
- Been thanked: 19 times
Re: SHG shot caH caK for today
good shot!
I think that improving slit focus, you would reach even better results...
I think that improving slit focus, you would reach even better results...
-
- Way More Fun to Share It!!
- Posts: 2033
- Joined: Sat Nov 24, 2012 2:33 pm
- Has thanked: 57 times
- Been thanked: 1204 times
Re: SHG shot caH caK for today
im trying
200mm collminator lens = tricky to get just right
im thinking of increasing to 300mm
200mm collminator lens = tricky to get just right
im thinking of increasing to 300mm