Search found 907 matches

by astroshot
Tue Jul 09, 2024 6:01 pm
Forum: SPoD Archive
Topic: 2024 July 4th - Fireworks
Replies: 20
Views: 622

Re: 2024 July 4th - Fireworks

Crikey, those animations are amazing!! :shock:
by astroshot
Mon Jul 08, 2024 7:18 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Magnetic field with Sol'Ex
Replies: 6
Views: 362

Re: Magnetic field with Sol'Ex

Hmm, that's interesting.
by astroshot
Fri Jul 05, 2024 6:39 pm
Forum: Solar Scope Modifications
Topic: Lunt 60 as rear doublestack
Replies: 5
Views: 694

Re: Lunt 60 as rear doublestack

Thanks Antonello.
I'm looking for a small simple setup TBH.
Thanks,
Michael.
by astroshot
Fri Jul 05, 2024 6:35 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: My Sol'Ex first light image
Replies: 5
Views: 355

Re: My Sol'Ex first light image

Welcome to the Sol'ex club Chris. Nice way to kick things off.
by astroshot
Fri Jul 05, 2024 6:23 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Sol'Ex user from France
Replies: 4
Views: 353

Re: Sol'Ex user from France

Welcome aboard Olivier!
by astroshot
Wed Jul 03, 2024 8:52 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Coronado or Lunt, or stick with my Solarview
Replies: 18
Views: 2377

Re: Coronado or Lunt, or stick with my Solarview

Good to hear that a solution is available, even if it is taking a considerable amount of time and money.
by astroshot
Tue Jul 02, 2024 8:41 pm
Forum: Solar Scope Modifications
Topic: Lunt 60 as rear doublestack
Replies: 5
Views: 694

Re: Lunt 60 as rear doublestack

Thanks Mark. As I suspected. Not as simple as I hoped. That answers that.
Thanks.
by astroshot
Tue Jul 02, 2024 6:32 pm
Forum: This is SolarChat !!
Topic: The Solar Observers Meeting is upon us! Soleye300 will be there.
Replies: 21
Views: 1053

Re: The Solar Observers Meeting is upon us! Soleye300 will be there.

christian viladrich wrote: Tue Jul 02, 2024 4:02 pm
Barron village is about 30 km north-east from Paris-Charles de Gaulle airport. This is about a 30 mm drive.
That's nice and accessible. Thanks.
by astroshot
Tue Jul 02, 2024 6:30 pm
Forum: Solar Scope Modifications
Topic: Lunt 60 as rear doublestack
Replies: 5
Views: 694

Lunt 60 as rear doublestack

Hi,
Can a Lunt 60 etalon be used as a rear double stack etalon on a f/5 scope?
Thanks,
Michael.
by astroshot
Sun Jun 30, 2024 4:32 pm
Forum: Solar Reference Library
Topic: The Solar Observers Meeting is upon us! Soleye300 will be there.
Replies: 11
Views: 443

Re: The Solar Observers Meeting is upon us! Soleye300 will be there.

nicspenceryork wrote: Sun Jun 30, 2024 12:49 pm Wow, this event looks wonderful.
Maybe we should organise a 'school trip' from the UK to a future one?!
Nic
100%
by astroshot
Sun Jun 30, 2024 4:32 pm
Forum: This is SolarChat !!
Topic: The Solar Observers Meeting is upon us! Soleye300 will be there.
Replies: 21
Views: 1053

Re: The Solar Observers Meeting is upon us! Soleye300 will be there.

nicspenceryork wrote: Sun Jun 30, 2024 12:49 pm Wow, this event looks wonderful.
Maybe we should organise a 'school trip' from the UK to a future one?!
Nic
100%
by astroshot
Sat Jun 29, 2024 9:54 pm
Forum: This is SolarChat !!
Topic: How do I calculate the maximum magnification I can get without oversampling?
Replies: 24
Views: 805

Re: How do I calculate the maximum magnification I can get without oversampling?

Hello Nic, I think you can go around not having a SSM by using SharpCap seeing monitor. AZAstroguy gives a demo in one of his videos on solar imaging. I think you Thanks for the suggestion Magnus. I found it here at 11:10 in to the video: https://youtu.be/t52-cWysetg?feature=shared I must try that ...
by astroshot
Sat Jun 29, 2024 9:36 pm
Forum: This is SolarChat !!
Topic: Spain 2024-06-29
Replies: 17
Views: 735

Re: Spain 2024-06-29

I'm a little envious of the equipment and weather Alexandra.
Rained all day here today.
by astroshot
Sat Jun 29, 2024 9:34 pm
Forum: Sunlit Earth
Topic: Daytime fox visit
Replies: 5
Views: 234

Re: Daytime fox visit

Fabulous! Never seen a grey fox.
by astroshot
Sat Jun 29, 2024 9:32 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Solarmax II vs III
Replies: 2
Views: 414

Re: Solarmax II vs III

Thanks Bob.
by astroshot
Sat Jun 29, 2024 9:31 pm
Forum: This is SolarChat !!
Topic: 29 June 2024
Replies: 10
Views: 389

Re: 29 June 2024

Nice work as always Ralph.
by astroshot
Sat Jun 29, 2024 9:29 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Sol'ex bandwidth
Replies: 4
Views: 296

Re: Sol'ex bandwidth

Thanks Jan.
by astroshot
Fri Jun 28, 2024 5:41 am
Forum: This is SolarChat !!
Topic: How do I calculate the maximum magnification I can get without oversampling?
Replies: 24
Views: 805

Re: How do I calculate the maximum magnification I can get without oversampling?

Marty, Under what circumstances is it better to reduce aperture than to reduce focal length instead? I can't think of any, but I would welcome your thoughts. As wavelength decreases, angular resolution increases. But, the effect from seeing is stronger as wavelength decreases. So an example would b...
by astroshot
Thu Jun 27, 2024 9:26 pm
Forum: This is SolarChat !!
Topic: Morning sun with ISTAR 228/F36 - 26.06.
Replies: 8
Views: 473

Re: Morning sun with ISTAR 228/F36 - 26.06.

Serious high res work.
From my calcs, you're imaging at approx 0.16"/pixel. Amazing.
by astroshot
Thu Jun 27, 2024 8:59 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Sol'ex bandwidth
Replies: 4
Views: 296

Sol'ex bandwidth

When processing my latest images in JSol'ex, I see there is a profile function. See below. 20240623_profile.png Just so I understand it, the 'bandwidth' of the system would be the full width at half maximum (FWHM), yea? Reason I ask is that for this image, it would seen to be approx 1A, which seems ...
by astroshot
Thu Jun 27, 2024 8:16 pm
Forum: This is SolarChat !!
Topic: The Solar Observers Meeting is upon us! Soleye300 will be there.
Replies: 21
Views: 1053

Re: The Solar Observers Meeting is upon us! Soleye300 will be there.

Some PDFs of presentations from previous years here:
https://www.soleilactivites.fr/programme.html
Looking forward to seeing the recorded presentations.
by astroshot
Thu Jun 27, 2024 8:16 pm
Forum: Solar Reference Library
Topic: The Solar Observers Meeting is upon us! Soleye300 will be there.
Replies: 11
Views: 443

Re: The Solar Observers Meeting is upon us! Soleye300 will be there.

Some PDFs of presentations from previous years here:
https://www.soleilactivites.fr/programme.html
Looking forward to seeing the recorded presentations.
by astroshot
Thu Jun 27, 2024 7:54 pm
Forum: This is SolarChat !!
Topic: How do I calculate the maximum magnification I can get without oversampling?
Replies: 24
Views: 805

Re: How do I calculate the maximum magnification I can get without oversampling?

Marty,
Under what circumstances is it better to reduce aperture than to reduce focal length instead?
I can't think of any, but I would welcome your thoughts.
by astroshot
Thu Jun 27, 2024 7:01 pm
Forum: This is SolarChat !!
Topic: Spain 2024-06-26
Replies: 27
Views: 755

Re: Spain 2024-06-26

Impressive gear!
by astroshot
Thu Jun 27, 2024 7:00 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Sol'Ex first light
Replies: 6
Views: 332

Re: Sol'Ex first light

You're advancing at a rapid rate!
I find, from my limited experience, that I need to use the telescope focus to bring the left and right edges to sharp focus, and the helical focuser to bring the fine lines of the spectrum to sharp focus.
by astroshot
Wed Jun 26, 2024 9:43 pm
Forum: This is SolarChat !!
Topic: Spain 2024-06-26
Replies: 27
Views: 755

Re: Spain 2024-06-26

May I ask, is that 2 external 90 etalons?
by astroshot
Wed Jun 26, 2024 9:43 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Sol'Ex first light
Replies: 6
Views: 332

Re: Sol'Ex first light

Good first test!
I find the Sol'ex is quite tricky, so keep giving it plenty practice and you'll get there.
by astroshot
Wed Jun 26, 2024 9:41 pm
Forum: This is SolarChat !!
Topic: Spain 2024-06-26
Replies: 27
Views: 755

Re: Spain 2024-06-26

That's fantastic Alexandra!
A SPOD for sure!
by astroshot
Wed Jun 26, 2024 9:30 pm
Forum: This is SolarChat !!
Topic: How do I calculate the maximum magnification I can get without oversampling?
Replies: 24
Views: 805

Re: How do I calculate the maximum magnification I can get without oversampling?

Personally, if the seeing is unstable, I would leave the aperture unchanged and just reduce the focal length until the image looks stable enough for imaging. Sometimes I can image at a focal length a little beyond the 'maximum' stated in the solar spreadsheet. When imaging, if you put the edge of th...
by astroshot
Tue Jun 25, 2024 8:42 pm
Forum: This is SolarChat !!
Topic: My best animation so far June 24, 2024 Magnetic loops
Replies: 20
Views: 729

Re: My best animation so far June 24, 2024 Magnetic loops

Jeepers, that's seriously impressive.
Delighted so many of you saw and captured these loops, while disappointed that I missed it.
But seriously impressive animations. I've much to learn.
by astroshot
Tue Jun 25, 2024 8:37 pm
Forum: This is SolarChat !!
Topic: 25 June 2024
Replies: 10
Views: 453

Re: 25 June 2024

Wonderful action captured in the filaments Ralph.
by astroshot
Tue Jun 25, 2024 8:36 pm
Forum: This is SolarChat !!
Topic: Post flare loops, M class flare in NOAA 13712
Replies: 11
Views: 473

Re: Post flare loops, M class flare in NOAA 13712

Very nice work Jim. Seriously impressive.
by astroshot
Tue Jun 25, 2024 8:33 pm
Forum: This is SolarChat !!
Topic: 1 hour 54 minutes timelapse of a coronal loop on the Sun in H-Alpha on 24th of June 2024.
Replies: 24
Views: 881

Re: 1 hour 54 minutes timelapse of a coronal loop on the Sun in H-Alpha on 24th of June 2024.

That's seriously impressive!
May I ask how long it took you to process that? It must have been hours!
by astroshot
Tue Jun 25, 2024 7:26 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Good progress made today
Replies: 12
Views: 412

Re: Good progress made today

Also, using a photographic ND filter as an ERF will inevitably degrade the image quality. A Herschel wedge is better or using a slit that can survive unfiltered light. A Baader D-ERF is also a good option and gives much greater light throughput (although might only work for H-alpha). Hmm yes, inter...
by astroshot
Tue Jun 25, 2024 12:19 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Good progress made today
Replies: 12
Views: 412

Re: Good progress made today

pedro wrote: Tue Jun 25, 2024 9:08 am I guessed you used a good mount. As you know I also have two Paramounts ME but I do not use them for solar imaging. I'm trying to get my Taka EM400 running with The Sky. I also plan to use My TV NP101 with the Sol'Ex
I think you need a third PME… 😉
by astroshot
Tue Jun 25, 2024 12:18 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Good progress made today
Replies: 12
Views: 412

Re: Good progress made today

pedro wrote: Tue Jun 25, 2024 9:09 am
Another question, when you point at the Sun Sky trats to scream SUN SUN SUN, is there a way to shut it down...
Ha! Yes, I mute the audio on my pc! 😂
But there must be a better way.
by astroshot
Mon Jun 24, 2024 9:08 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Good progress made today
Replies: 12
Views: 412

Re: Good progress made today

Thanks Pedro.
I used my Paramount ME with TheSkyX. Used the program to set a fixed slew speed (as opposed to the joystick).
Aperture and focal length certainly made all the difference.
by astroshot
Mon Jun 24, 2024 12:29 pm
Forum: SPoD Archive
Topic: Good progress made today
Replies: 4
Views: 299

Re: Good progress made today

Ah, you’re too kind Alexandra.
by astroshot
Mon Jun 24, 2024 12:28 pm
Forum: SPoD Archive
Topic: AR 3712 in white light
Replies: 10
Views: 371

Re: AR 3712 in white light

That’s a superb WL image!
Interesting choice in using an OIII filter too.
by astroshot
Sun Jun 23, 2024 9:43 pm
Forum: SPoD Archive
Topic: Good progress made today
Replies: 4
Views: 299

Good progress made today

After a year of perpetual cloud, this afternoon was excellent for solar observing conditions. I tried my usual setup of the Sol'ex on the 40mm aperture / 220mm focal length refractor, but still not entirely happy with the results. I then decided to try the Sol'ex on the TEC140 with a Baader D-ERF 13...
by astroshot
Sun Jun 23, 2024 9:43 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Good progress made today
Replies: 12
Views: 412

Good progress made today

After a year of perpetual cloud, this afternoon was excellent for solar observing conditions. I tried my usual setup of the Sol'ex on the 40mm aperture / 220mm focal length refractor, but still not entirely happy with the results. I then decided to try the Sol'ex on the TEC140 with a Baader D-ERF 13...
by astroshot
Sat Jun 22, 2024 10:12 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Solarmax II vs III
Replies: 2
Views: 414

Solarmax II vs III

Hi Folks, I have an original Coronado SM90 etalon. I use it on a simple 100mm f/5 achro. I am looking at the possibility of getting a Coronado SM90 telescope to enable double-stacking, and am trying to understand the difference between the II vs the III. Am I correct in saying, they can be summed up...
by astroshot
Sat Jun 22, 2024 10:00 pm
Forum: Solar Astronomy Shop and Swap
Topic: Coronado Adapter Plate #CI-AP190
Replies: 3
Views: 1587

Re: Coronado Adapter Plate #CI-AP190

Late to this one, I know, but is this still available Mark?
by astroshot
Wed Jun 19, 2024 6:13 pm
Forum: SPoD Archive
Topic: AR3712 G Band
Replies: 29
Views: 694

Re: AR3712 G Band

Great work Nic. Fab SPOD.
by astroshot
Sun May 19, 2024 6:07 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: Sol'ex - 2024 May 19 - 4 wavelengths
Replies: 1
Views: 393

Sol'ex - 2024 May 19 - 4 wavelengths

Spent a bit of time on this lovely summer's day tinkering with the Sol'ex and with processing the resultant images in Photoshop - Camera Raw. Below are a few samples in CaK, H Beta, H Alpha, and Sodium. These were at 220mm FL. The strange thing with Sodium is that I am getting a banding that I do no...
by astroshot
Sun May 12, 2024 8:58 pm
Forum: This is SolarChat !!
Topic: Solarchat Zoom chat - Sunday 12th May 18:00 UTC
Replies: 16
Views: 1573

Re: Solarchat Zoom chat - Sunday 12th May 18:00 UTC

Thanks for taking the time to prepare and deliver an excellent presentation Stuart!
by astroshot
Sat May 11, 2024 7:13 pm
Forum: This is SolarChat !!
Topic: Most amazing night ever! 10/11th May 2024
Replies: 26
Views: 1603

Re: Most amazing night ever! 10/11th May 2024

Amazing night Alexandra!
Wonderful to have a set of beautiful photos to cherish the memories.