Very nice results, Stu.
Cheers.
Peter
Search found 1644 matches
- Fri May 13, 2022 12:57 am
- Forum: This is SolarChat !!
- Topic: Active Regions in Ha 12th May 2022
- Replies: 15
- Views: 466
- Fri May 13, 2022 12:55 am
- Forum: This is SolarChat !!
- Topic: prominences of the 11th and 12th of may with the spectroscope
- Replies: 14
- Views: 445
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 ?
- Thu May 12, 2022 5:26 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Are blue and red wings of hydrogen alpha basically equivalent?
- Replies: 8
- Views: 1989
Re: Are blue and red wings of hydrogen alpha basically equivalent?
Quote Daniele: Are blue and red wings of hydrogen alpha basically equivalent? Quote Christian: The answer is yes :-) I'll have to offer a somewhat dissenting opinion here. Depending on your use of the word "basically" I suppose Christian's answer is valid. For the purpose of tuning a quark...
- Sat May 07, 2022 8:55 pm
- Forum: This is SolarChat !!
- Topic: Cobwebs are dusted off! First images of the season.
- Replies: 14
- Views: 479
Re: Cobwebs are dusted off! First images of the season.
Dennis, Maurits, Frank and Ivan: Many thanks for your positive feedback. Thanks, Franco. It’s good to be back! Alexandra: Your supportive comments always make my day! Eric: I hope you get to use your big ERF as well. You’re clearly a master of full disk imaging. It’s challenging to image at this clo...
- Sat May 07, 2022 1:25 pm
- Forum: SPoD Archive
- Topic: Cobwebs are dusted off! First images of the season.
- Replies: 4
- Views: 443
Cobwebs are dusted off! First images of the season.
Hi Everyone. After a long winter, vast amounts of snowfall and, finally, a few days of torrential downpour with associated flooding across the province, I've finally been able to set up for an imaging session! The window of opportunity was short and the seeing average but I managed some H-alpha, hig...
- Sat May 07, 2022 1:25 pm
- Forum: This is SolarChat !!
- Topic: Cobwebs are dusted off! First images of the season.
- Replies: 14
- Views: 479
Cobwebs are dusted off! First images of the season.
Hi Everyone. After a long winter, vast amounts of snowfall and, finally, a few days of torrential downpour with associated flooding across the province, I've finally been able to set up for an imaging session! The window of opportunity was short and the seeing average but I managed some H-alpha, hig...
- Thu May 05, 2022 3:39 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Krypton line - spectroscopy
- Replies: 14
- Views: 1424
Re: Krypton line - spectroscopy
Have a nice day!
- Thu May 05, 2022 3:37 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Krypton line - spectroscopy
- Replies: 14
- Views: 1424
Re: Krypton line - spectroscopy
Sorry to have to disagree with you, Alexandra.
I was preparing my response as you posted yours.
Just because there is a fortuitous alignment of laboratory Kr lines with the telluric oxygen band doesn't mean that solar Kr features are hiding there.
See the reasons for my statement in my post.
Peter
I was preparing my response as you posted yours.
Just because there is a fortuitous alignment of laboratory Kr lines with the telluric oxygen band doesn't mean that solar Kr features are hiding there.
See the reasons for my statement in my post.
Peter
- Thu May 05, 2022 3:32 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Krypton line - spectroscopy
- Replies: 14
- Views: 1424
Re: Krypton line - spectroscopy
Thanks for the resources, Christian. I'll add this one which has been my go-to workhorse for solar spectrum analysis. It's easily retrievable from the BASS2000 site and is compiled from 1971 data of Charlotte Moore (NBS) so is a little outdated compared to the Wallace et.al. document you've linked. ...
- Tue May 03, 2022 12:30 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Krypton line - spectroscopy
- Replies: 14
- Views: 1424
Re: Krypton line - spectroscopy
Hi Alexandra. I’m not aware of any krypton lines in the visible / near infrared part of the solar spectrum. There is a strong potassium line at 7699 angstroms and another at 7665 angstroms. Maybe your anonymous SolarChatter has confused the chemical symbol of potassium (K) with the chemical symbol o...
- Mon May 02, 2022 3:02 am
- Forum: This is SolarChat !!
- Topic: Some random granulation
- Replies: 24
- Views: 746
Re: Some random granulation
Beautiful!
Cheers.
Peter
Cheers.
Peter
- Mon May 02, 2022 3:00 am
- Forum: This is SolarChat !!
- Topic: Saturday Sun April 30th 250 mm RCT and 150 mm Refractor
- Replies: 16
- Views: 670
Re: Saturday Sun April 30th 250 mm RCT and 150 mm Refractor
Beautiful results, Stu.
That double-stacked limb in the first shot is gorgeous.
Cheers.
Peter
That double-stacked limb in the first shot is gorgeous.
Cheers.
Peter
- Sun May 01, 2022 7:33 pm
- Forum: This is SolarChat !!
- Topic: C11 + PST etalon vs C11 + QUARK Chromosphere
- Replies: 17
- Views: 695
Re: C11 + PST etalon vs C11 + QUARK Chromosphere
Spectacular work, Valery.
Thank you for posting these.
Cheers.
Peter
Thank you for posting these.
Cheers.
Peter
- Sun May 01, 2022 7:31 pm
- Forum: This is SolarChat !!
- Topic: C8 captured the animation of M-class solar flare on April 21, 2022
- Replies: 10
- Views: 366
Re: C8 captured the animation of M-class solar flare on April 21, 2022
Great capture!
Cheers.
Peter
Cheers.
Peter
- Sun May 01, 2022 7:29 pm
- Forum: This is SolarChat !!
- Topic: 30th April 2022 M class flare
- Replies: 31
- Views: 922
Re: 30th April 2022 M class flare
What a great set of stills and spectacular animation!
Well done, Alexandra.
Cheers.
Peter
Well done, Alexandra.
Cheers.
Peter
- Sun May 01, 2022 7:25 pm
- Forum: This is SolarChat !!
- Topic: 2022 04 30 - The X before I was late to work
- Replies: 13
- Views: 502
Re: 2022 04 30 - The X before I was late to work
Wow! Utterly spectacular.
Right time + “know how” = amazing result.
Cheers.
Peter
Right time + “know how” = amazing result.
Cheers.
Peter
- Mon Apr 25, 2022 11:01 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Spectroheliography in CN light
- Replies: 12
- Views: 1020
Re: Spectroheliography in CN light
Hi Fulvio. Concerning your questions The molecular population of CN belongs only to sun cromosphere? - If so,at what height and temperature? Molecules are formed mainly in the outer layers of the photosphere (low chromosphere). Their formation is generally highly temperature sensitive so they “live”...
- Mon Apr 25, 2022 7:53 pm
- Forum: This is SolarChat !!
- Topic: AR2993-4-5-6 April 22 and 23, 2022
- Replies: 21
- Views: 621
Re: AR2993-4-5-6 April 22 and 23, 2022
Lovely calcium disks, Franco.
Best wishes for a speedy recovery.
Cheers.
Peter
Best wishes for a speedy recovery.
Cheers.
Peter
- Mon Apr 25, 2022 7:51 pm
- Forum: This is SolarChat !!
- Topic: AR2995, AR2994, AR2993, Proms | High Res | Cont, CaK, HA | April 25th 2022
- Replies: 11
- Views: 407
Re: AR2995, AR2994, AR2993, Proms | High Res | Cont, CaK, HA | April 25th 2022
Beautiful results, Marty.
I’m sick of winter!
Cheers.
Peter
I’m sick of winter!
Cheers.
Peter
- Mon Apr 25, 2022 7:50 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: CaII H spectroheliogram
- Replies: 7
- Views: 664
Re: CaII H spectroheliogram
Very nice work and the instrument is a beauty!
Cheers.
Peter
Cheers.
Peter
- Mon Apr 25, 2022 7:49 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Spectroheliography in CN light
- Replies: 12
- Views: 1020
Re: Spectroheliography in CN light
No apologies necessary, Fulvio.
There is a lot of history on this forum which is why it is so useful.
Cheers.
Peter
There is a lot of history on this forum which is why it is so useful.
Cheers.
Peter
- Mon Apr 25, 2022 7:46 pm
- Forum: This is SolarChat !!
- Topic: Quarkaction 20.04.22
- Replies: 33
- Views: 1465
Re: Quarkaction 20.04.22
Stunning set of images!
Congratulations on well-deserved SPOD.
Cheers.
Peter
Congratulations on well-deserved SPOD.
Cheers.
Peter
- Mon Apr 25, 2022 7:43 pm
- Forum: This is SolarChat !!
- Topic: air-spaced etalon vs QUARK CHROMOSPHERE
- Replies: 7
- Views: 313
Re: air-spaced etalon vs QUARK CHROMOSPHERE
Thanks for the post, Valery.
Good to see you are having some moments of peace and calm?
Cheers.
Peter
Good to see you are having some moments of peace and calm?
Cheers.
Peter
- Mon Apr 25, 2022 3:45 am
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Spectroheliography in CN light
- Replies: 12
- Views: 1020
Re: Spectroheliography in CN light
The subject of CN imaging has also been discussed in these two forum threads: 2022: https://solarchatforum.com/viewtopic.php?f=8&t=34502 2013: https://solarchatforum.com/viewtopic.php?f=8&t=9608 I believe the 2013 thread may have been my first reported CN image. The actual images are absent ...
- Mon Apr 25, 2022 3:39 am
- Forum: This is SolarChat !!
- Topic: April 23, 2022 WL+
- Replies: 16
- Views: 557
Re: April 23, 2022 WL+
Very nice shots, Phil.
Cheers.
Peter
Cheers.
Peter
- Sun Apr 24, 2022 8:37 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Spectroheliography in CN light
- Replies: 12
- Views: 1020
Re: Spectroheliography in CN light
Very nice. For the first time in the amateur field (I think) a spectroheliogram of the solar disk in light of the molecular lines of Cyanogen (Cn) at 3882 and 3883Å. This is a bit of a bold claim and not quite accurate! My latest CN image (2021) is posted in this thread: https://solarchatforum.com/v...
- Sat Apr 23, 2022 7:33 pm
- Forum: This is SolarChat !!
- Topic: Sun in Ha, CaK and at 430nm 23rd April 2022
- Replies: 18
- Views: 538
Re: Sun in Ha, CaK and at 430nm 23rd April 2022
Super results, Stu. Some spectacular action in view.
Nothing but rain and snow and more rain and more snow here.
I think I was out and imaging by this time last year.
Cheers.
Peter
Nothing but rain and snow and more rain and more snow here.
I think I was out and imaging by this time last year.
Cheers.
Peter
- Sat Apr 23, 2022 4:33 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Spectroheliography in UV light
- Replies: 7
- Views: 740
Re: Spectroheliography in UV light
Welcome to the forum, Fulvio.
It will be good to follow your work.
Cheers.
Peter
It will be good to follow your work.
Cheers.
Peter
- Sat Apr 23, 2022 1:06 pm
- Forum: This is SolarChat !!
- Topic: AR2993 & AR2994 in High Res | HA, Continuum, CaK | April 21rst 2022
- Replies: 15
- Views: 746
Re: AR2993 & AR2994 in High Res | HA, Continuum, CaK | April 21rst 2022
Terrific series, Marty.
Cheers.
Peter
Cheers.
Peter
- Sat Apr 23, 2022 1:04 pm
- Forum: This is SolarChat !!
- Topic: From Valery. Kherson, UKRAINE. NEWS
- Replies: 238
- Views: 15403
Re: From Valery. Kherson, UKRAINE. NEWS
Dear Valery; I’m so sad this attempt has failed and so sorry for the fear and disappointment you and your family are enduring. You seem to be very close to the front lines so maybe things can change rapidly. I can only hope that some window of opportunity opens soon for you. Thank you for taking tim...
- Fri Apr 22, 2022 12:32 pm
- Forum: This is SolarChat !!
- Topic: From Valery. Kherson, UKRAINE. NEWS
- Replies: 238
- Views: 15403
Re: From Valery. Kherson, UKRAINE. NEWS
You are stuck in a nightmare!
I hope luck is on your side for the attempt on Saturday.
All my best wishes, Valery.
Peter
I hope luck is on your side for the attempt on Saturday.
All my best wishes, Valery.
Peter
- Thu Apr 21, 2022 10:34 pm
- Forum: This is SolarChat !!
- Topic: Active region complex in Ha 21st April 2022
- Replies: 13
- Views: 426
Re: Active region complex in Ha 21st April 2022
Magnificent views, Stu!
Cheers.
Peter
Cheers.
Peter
- Thu Apr 21, 2022 1:40 am
- Forum: This is SolarChat !!
- Topic: From Valery. Kherson, UKRAINE. NEWS
- Replies: 238
- Views: 15403
Re: From Valery. Kherson, UKRAINE. NEWS
Good luck to you, Valery!!
Please let us know how it goes.
Wishing you a safe journey.
Peter
Please let us know how it goes.
Wishing you a safe journey.
Peter
- Wed Apr 20, 2022 1:08 am
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Comments on Solar Radio Astronomy
- Replies: 7
- Views: 1657
Re: Comments on Solar Radio Astronomy
Hi Rainer.
Your loop is ~ lambda / 8.38. It’s only the circumference of a single loop that matters. This would be considered a “small loop” with a null in the antenna pattern along the coil axis and maximum in the antenna pattern in the plane of the loop.
Your loop is ~ lambda / 8.38. It’s only the circumference of a single loop that matters. This would be considered a “small loop” with a null in the antenna pattern along the coil axis and maximum in the antenna pattern in the plane of the loop.
- Tue Apr 19, 2022 7:38 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Comments on Solar Radio Astronomy
- Replies: 7
- Views: 1657
Re: Comments on Solar Radio Astronomy
Hi Rainer. Thanks for your comments. "Any information somewhere about how to calculate a Loop antenna for a specific frequency?" "Why are loop antennas not common in this cases. They are small and so require just a tiny space." Loop antennas are specified by the number of wavelen...
- Sun Apr 17, 2022 9:25 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Comments on Solar Radio Astronomy
- Replies: 7
- Views: 1657
Comments on Solar Radio Astronomy
Greetings All. There's been some interest expressed in solar radio astronomy so I thought I'd throw in my two cents' worth. Many of you probably realize that there is an entire chapter (Chapter 13) dedicated to solar radio astronomy in Christian's book "Solar Astronomy: Observing, imaging and s...
- Sun Apr 17, 2022 9:25 pm
- Forum: Solar Reference Library
- Topic: Comments on Solar Radio Astronomy
- Replies: 2
- Views: 1660
Comments on Solar Radio Astronomy
Greetings All. There's been some interest expressed in solar radio astronomy so I thought I'd throw in my two cents' worth. Many of you probably realize that there is an entire chapter (Chapter 13) dedicated to solar radio astronomy in Christian's book "Solar Astronomy: Observing, imaging and s...
- Sun Apr 17, 2022 3:03 am
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: shg Ha caK
- Replies: 4
- Views: 537
Re: shg Ha caK
Nice work, John.
Cheers.
Peter
Cheers.
Peter
- Fri Apr 15, 2022 5:19 pm
- Forum: This is SolarChat !!
- Topic: HEALTH UPDATE & THANK YOU
- Replies: 23
- Views: 588
Re: HEALTH UPDATE & THANK YOU
Wishing you a quick return to good health, Terry.
All the best.
Peter
All the best.
Peter
- Fri Apr 15, 2022 3:04 pm
- Forum: This is SolarChat !!
- Topic: From Valery. Kherson, UKRAINE. NEWS
- Replies: 238
- Views: 15403
Re: From Valery. Kherson, UKRAINE. NEWS
Yes, Peter, I am still in Kherson. It is not easy - to find a releable relatively safe way to leave the city and get to a more safe place. If nothing prevents, we should leave in a 1-2 days. Thanks for the information, Valery. I feel grief that you are faced with this terrible choice. It is a horri...
- Thu Apr 14, 2022 1:37 pm
- Forum: This is SolarChat !!
- Topic: From Valery. Kherson, UKRAINE. NEWS
- Replies: 238
- Views: 15403
Re: From Valery. Kherson, UKRAINE. NEWS
You are daily in my thoughts, Valery.
Are you still in Kherson?
Peter
Are you still in Kherson?
Peter
- Wed Mar 30, 2022 4:12 pm
- Forum: Solar Scope Modifications
- Topic: Etalon manufacturer
- Replies: 6
- Views: 2152
Re: Etalon manufacturer
You could try Bernhard Halle: https://www.b-halle.de/products/mirrors ... lates.html
This solution will be expensive, though!
Cheers.
Peter
This solution will be expensive, though!
Cheers.
Peter
- Wed Mar 30, 2022 4:02 pm
- Forum: This is SolarChat !!
- Topic: 89 min animation of Exlosive Flare C4.34 and ARs 12975 &12976, 29 March 2022
- Replies: 26
- Views: 903
Re: 89 min animation of Exlosive Flare C4.34 and ARs 12975 &12976, 29 March 2022
Terrific animations!
Exciting to see these flare events.
Cheers.
Peter
Exciting to see these flare events.
Cheers.
Peter
- Wed Mar 30, 2022 12:56 pm
- Forum: This is SolarChat !!
- Topic: From Valery. Kherson, UKRAINE. NEWS
- Replies: 238
- Views: 15403
Re: From Valery. Kherson, UKRAINE. NEWS
Always thinking of you in your time of unbelievable hardship.
Stay strong, Valery.
Peter
Stay strong, Valery.
Peter
- Wed Mar 30, 2022 1:58 am
- Forum: SPoD Archive
- Topic: March 29 FD LS80
- Replies: 11
- Views: 761
Re: March 29 FD LS80
Hah!
Glad that cup of coffee helped you work the bugs out, Phil!
Great results.
Cheers.
Peter
Glad that cup of coffee helped you work the bugs out, Phil!
Great results.
Cheers.
Peter
- Wed Mar 30, 2022 1:58 am
- Forum: This is SolarChat !!
- Topic: March 29 FD LS80
- Replies: 11
- Views: 454
Re: March 29 FD LS80
Hah!
Glad that cup of coffee helped you work the bugs out, Phil!
Great results.
Cheers.
Peter
Glad that cup of coffee helped you work the bugs out, Phil!
Great results.
Cheers.
Peter
- Wed Mar 30, 2022 1:55 am
- Forum: This is SolarChat !!
- Topic: First Light - LS50C Double Stack
- Replies: 25
- Views: 840
Re: First Light - LS50C Double Stack
Beautiful disks, Mark.
Cheers.
Peter
Cheers.
Peter
- Wed Mar 30, 2022 1:54 am
- Forum: This is SolarChat !!
- Topic: AR2976 AR2975 AR2978 High Res | WL HA | March 29th 2022
- Replies: 12
- Views: 454
Re: AR2976 AR2975 AR2978 High Res | WL HA | March 29th 2022
Beautiful results, Marty.
Cheers.
Peter
Cheers.
Peter
- Tue Mar 29, 2022 8:38 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Spectroheliograms recorded last summer.
- Replies: 10
- Views: 1249
Re: Spectroheliograms recorded last summer.
Thanks Mark and John.
Here is the last of the batch: the helium D3 chromospheric line.
Cheers.
Peter
Here is the last of the batch: the helium D3 chromospheric line.
Cheers.
Peter
- Sun Mar 27, 2022 9:20 pm
- Forum: This is SolarChat !!
- Topic: Beautiful AR2976 in double stack Ha with the C8 EdgeHD / March 27
- Replies: 14
- Views: 573
Re: Beautiful AR2976 in double stack Ha with the C8 EdgeHD / March 27
Outstanding!
Cheers.
Peter
Cheers.
Peter