prominences of the 11th and 12th of may with the spectroscope
-
- Ohhhhhh My!
- Posts: 173
- Joined: Mon May 02, 2022 1:19 pm
- Has thanked: 259 times
- Been thanked: 237 times
prominences of the 11th and 12th of may with the spectroscope
Hello guys,
I've been observing solar prominences for 24 years now with the technique described in the book "The Sun" of angelo Secchi (available for free on archive.org). The technique is very well described in english in "The sun" from Charles Young also available for free on the same website. My device is mix of coronograph and spectroscope (cf The Observer's Guide to Astronomy, Vol. 1 where there's a plan and also detailed instructions to build it).
So here are some pics taken with it on my Bresser 127/1200. I use a diffraction grating of 1200 grooves/mm and ASI 120MM.
Chris
I've been observing solar prominences for 24 years now with the technique described in the book "The Sun" of angelo Secchi (available for free on archive.org). The technique is very well described in english in "The sun" from Charles Young also available for free on the same website. My device is mix of coronograph and spectroscope (cf The Observer's Guide to Astronomy, Vol. 1 where there's a plan and also detailed instructions to build it).
So here are some pics taken with it on my Bresser 127/1200. I use a diffraction grating of 1200 grooves/mm and ASI 120MM.
Chris
- Attachments
-
- image 8.jpg (14.81 KiB) Viewed 435 times
Last edited by ChrisHalpha2017 on Thu May 12, 2022 10:13 pm, edited 1 time in total.
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
- solarchat
- Site Admin
- Posts: 4359
- Joined: Sat Feb 01, 2014 3:10 pm
- Location: Atlanta, GA USA
- Has thanked: 83 times
- Been thanked: 1314 times
- Contact:
Re: prominences of the 11th and 12th of may with the spectroscope
Man, that is awesome
Stephen W. Ramsden
Atlanta, GA USA
Founder/Director Charlie Bates Solar Astronomy Project
http://www.solarastronomy.org
Atlanta, GA USA
Founder/Director Charlie Bates Solar Astronomy Project
http://www.solarastronomy.org
-
- Ohhhhhh My!
- Posts: 173
- Joined: Mon May 02, 2022 1:19 pm
- Has thanked: 259 times
- Been thanked: 237 times
Re: prominences of the 11th and 12th of may with the spectroscope
thank you very much
At the time i started I bought the ha filter from Lumicon (1.5A) and it worked pretty well but within a year or two it started to fade a bit , so i decided to try another way to watch the prominences. The wide slit spectroscope is really a powerfull technique ; and when supplemented with the Lyot diaphragm the contrast is enhanced dramatically ( when the shy is clear) : the sky turns deep dark red to almost black in the vicinity of the sun's edge.
At the time i started I bought the ha filter from Lumicon (1.5A) and it worked pretty well but within a year or two it started to fade a bit , so i decided to try another way to watch the prominences. The wide slit spectroscope is really a powerfull technique ; and when supplemented with the Lyot diaphragm the contrast is enhanced dramatically ( when the shy is clear) : the sky turns deep dark red to almost black in the vicinity of the sun's edge.
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
- p_zetner
- Way More Fun to Share It!!
- Posts: 1644
- Joined: Sun Mar 18, 2012 4:59 pm
- Location: Winnipeg, Manitoba, Canada
- Has thanked: 166 times
- Been thanked: 719 times
Re: prominences of the 11th and 12th of may with the spectroscope
Nice result. Have you had any success with other wavelengths? I assume these are H-alpha.
Cheers.
Peter
To the mods: a little odd that this isn’t in the Spectroscopy forum ?
Cheers.
Peter
To the mods: a little odd that this isn’t in the Spectroscopy forum ?
- eroel
- Way More Fun to Share It!!
- Posts: 9408
- Joined: Mon Dec 19, 2011 10:45 pm
- Location: México D.F.
- Been thanked: 4904 times
Re: prominences of the 11th and 12th of may with the spectroscope
Hi:
Very interesting setup.
Regards.
Eric.
Very interesting setup.
Regards.
Eric.
-
- Ohhhhhh My!
- Posts: 173
- Joined: Mon May 02, 2022 1:19 pm
- Has thanked: 259 times
- Been thanked: 237 times
Re: prominences of the 11th and 12th of may with the spectroscope
thank you very much
Yes these are in the H alpha line. I tried other lines like the D3 and Hb but in general proms arent very bright in these lines and dont show much details compared to the Ha.
I put this subject in solar chat observations as I dont do spectrography : i observe the solar prominences. And unlike spectroheliography I dont need to scan the sun.
Yes these are in the H alpha line. I tried other lines like the D3 and Hb but in general proms arent very bright in these lines and dont show much details compared to the Ha.
I put this subject in solar chat observations as I dont do spectrography : i observe the solar prominences. And unlike spectroheliography I dont need to scan the sun.
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
- DeepSolar64
- Way More Fun to Share It!!
- Posts: 18823
- Joined: Thu Sep 05, 2019 12:19 am
- Location: Lowndesville S.C.
- Has thanked: 17572 times
- Been thanked: 16691 times
Re: prominences of the 11th and 12th of may with the spectroscope
Chris,
Very nice images and two really nice setups! My guess is the bright areas shown in your images that you have arrowed for doppler are shifted to the blue and coming toward you. They would appear bright also if you are looking down a length edgewise of prom(s) and seeing through a denser area. I see almost diamondlike bright points in proms from time to time.
That's my two cents....
James
Very nice images and two really nice setups! My guess is the bright areas shown in your images that you have arrowed for doppler are shifted to the blue and coming toward you. They would appear bright also if you are looking down a length edgewise of prom(s) and seeing through a denser area. I see almost diamondlike bright points in proms from time to time.
That's my two cents....
James
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
- Carbon60
- Way More Fun to Share It!!
- Posts: 14205
- Joined: Wed Mar 07, 2012 12:33 pm
- Location: Lancashire, UK
- Has thanked: 8415 times
- Been thanked: 8161 times
Re: prominences of the 11th and 12th of may with the spectroscope
Nice, Chris. I always find this type of approach enormously impressive.
Stu.
Stu.
H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
- MAURITS
- Way More Fun to Share It!!
- Posts: 8507
- Joined: Tue Nov 27, 2018 4:37 pm
- Location: Belgium
- Has thanked: 2412 times
- Been thanked: 4786 times
- Contact:
-
- Ohhhhhh My!
- Posts: 173
- Joined: Mon May 02, 2022 1:19 pm
- Has thanked: 259 times
- Been thanked: 237 times
Re: prominences of the 11th and 12th of may with the spectroscope
@ Deepsolar : yes you're right and if I use a very narrow slit then I can measure the shift and hence the speed .
Macrospicules very often show doppler shift and i when i use the 1800 gr/mm grating it much easier to see them .
Thank you very much for your " encouragements" (sorry, i dont know yet how to say it properly in english) ; its very encouraging
Macrospicules very often show doppler shift and i when i use the 1800 gr/mm grating it much easier to see them .
Thank you very much for your " encouragements" (sorry, i dont know yet how to say it properly in english) ; its very encouraging
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
- DeepSolar64
- Way More Fun to Share It!!
- Posts: 18823
- Joined: Thu Sep 05, 2019 12:19 am
- Location: Lowndesville S.C.
- Has thanked: 17572 times
- Been thanked: 16691 times
Re: prominences of the 11th and 12th of may with the spectroscope
Chris,
Keep stuff like this coming. This is exceptional work. I like the Bresser 127mm refractor too. In time I look to supersede the aperture of my Celestron 102mm achromat which is currently my largest solar capable telescope. The minimum I would consider is 127mm, preferably larger. Primarily for visual continuum when the seeing is good.
James
Keep stuff like this coming. This is exceptional work. I like the Bresser 127mm refractor too. In time I look to supersede the aperture of my Celestron 102mm achromat which is currently my largest solar capable telescope. The minimum I would consider is 127mm, preferably larger. Primarily for visual continuum when the seeing is good.
James
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
-
- Ohhhhhh My!
- Posts: 173
- Joined: Mon May 02, 2022 1:19 pm
- Has thanked: 259 times
- Been thanked: 237 times
Re: prominences of the 11th and 12th of may with the spectroscope
Hello James,
Thank you very much
I"m actually starting to enjoy my 127/1200 (I had a 102/1350 wich is great too so i switch between both when experimenting) but i"ve seen amazing results with the Bresser 152/1200!! I wanted to get that one but it was too heavy for my mount .
I've just recently bought an ASI 178MM and just tested it yesterday : no need to use a Barlow anymore with this camera and Bresser 127/1200! so theres also no more interference pattern and so on!! And as the chip is bigger I can capture larger part of the solar limb !
Thank you very much
I"m actually starting to enjoy my 127/1200 (I had a 102/1350 wich is great too so i switch between both when experimenting) but i"ve seen amazing results with the Bresser 152/1200!! I wanted to get that one but it was too heavy for my mount .
I've just recently bought an ASI 178MM and just tested it yesterday : no need to use a Barlow anymore with this camera and Bresser 127/1200! so theres also no more interference pattern and so on!! And as the chip is bigger I can capture larger part of the solar limb !
spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
- DeepSolar64
- Way More Fun to Share It!!
- Posts: 18823
- Joined: Thu Sep 05, 2019 12:19 am
- Location: Lowndesville S.C.
- Has thanked: 17572 times
- Been thanked: 16691 times
Re: prominences of the 11th and 12th of may with the spectroscope
My Losmandy AZ8 is stout enough to hold either the Bresser 127 or 152. It'll also hold the Astro-Tech AT130EDT and Takahashi TOA130. The TOA150 is too heavy.
I look forward to seeing more of your work.
James
I look forward to seeing more of your work.
James
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
- Montana
- Librarian
- Posts: 34559
- Joined: Mon Oct 17, 2011 5:25 pm
- Location: Cheshire, UK
- Has thanked: 17667 times
- Been thanked: 8787 times
Re: prominences of the 11th and 12th of may with the spectroscope
Wow!! these are absolutely incredible I've got a Baader Prominence viewer and that is great for visual prominences in a coronagraph style
Alexandra
Alexandra
- DeepSolar64
- Way More Fun to Share It!!
- Posts: 18823
- Joined: Thu Sep 05, 2019 12:19 am
- Location: Lowndesville S.C.
- Has thanked: 17572 times
- Been thanked: 16691 times
Re: prominences of the 11th and 12th of may with the spectroscope
You should use it more Alexandra.
Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces
Visual Observer
" Way more fun to see it! "