Beautiful
Alex
Search found 521 matches
- Thu Oct 05, 2023 6:38 pm
- Forum: This is SolarChat !!
- Topic: Prominence 05 0ctober 2023
- Replies: 7
- Views: 1451
- Wed Oct 04, 2023 5:38 pm
- Forum: This is SolarChat !!
- Topic: M1.9 flare and eruption at AR3452 10/2/2023
- Replies: 32
- Views: 3147
Re: M1.9 flare and eruption at AR3452 10/2/2023
Amazing animation!
Alex
Alex
- Mon Oct 02, 2023 6:56 pm
- Forum: This is SolarChat !!
- Topic: Test of a Daystar Quantum 0.5A with a T300
- Replies: 5
- Views: 1425
Test of a Daystar Quantum 0.5A with a T300
Hi, My project was to go toward double stack, hence I bought second hand this Quantum. Here some pics with a 300mm solar newton. https://www.presencenet.be/nucleus2.0/media/13/20231002-20230814_01_S01_33_083712_lapl4_ap3454_...._Q08.jpg https://www.presencenet.be/nucleus2.0/media/13/20231002-2023081...
- Sun Oct 01, 2023 7:00 pm
- Forum: This is SolarChat !!
- Topic: Imaging with a T400 - 2023 session
- Replies: 12
- Views: 1281
Re: Imaging with a T400 - 2023 session
It is a full open truss telescope. The hot parts are probably the source of the problem.DeepSolar64 wrote: ↑Sun Oct 01, 2023 3:02 pm The blurred part probably is atmospheric turbulence. I see this often im my images. Hot tube currents in the scope might can cause this too.
CS
Alex
- Sun Oct 01, 2023 6:57 pm
- Forum: This is SolarChat !!
- Topic: Imaging with a T400 - 2023 session
- Replies: 12
- Views: 1281
- Sun Oct 01, 2023 6:50 pm
- Forum: Solar Scope Modifications
- Topic: Solar newton T400, version 2023
- Replies: 19
- Views: 2657
Re: Solar newton T400, version 2023
Why do you need the dielectric secondary rather than an aluminium coated one? Are you going to be using a mica or air spaced etalon? This should only be in the Mods section? Hi, The aluminum coating has a reflection of 92 to 96% depending on the quality. The remaining 8 to 4% is transformed into he...
- Sun Oct 01, 2023 12:25 pm
- Forum: This is SolarChat !!
- Topic: Imaging with a T400 - 2023 session
- Replies: 12
- Views: 1281
Re: Imaging with a T400 - 2023 session
Thank all.
This picture looks strange, with the blurred part in the middle.
CS
Alex
This picture looks strange, with the blurred part in the middle.
CS
Alex
- Sun Oct 01, 2023 12:23 pm
- Forum: Solar Scope Modifications
- Topic: Solar newton T400, version 2023
- Replies: 19
- Views: 2657
Re: Solar newton T400, version 2023
Wow.. what a project. I hope you can sort out the potential problems, im curious if it works well. Sadly couldnt watch the video, youtube says im not old enough ^^ The video on youtube is not public; you need the above link to reach it. It is also restricted (Age > 18), hence you need to login to v...
- Sat Sep 30, 2023 8:09 pm
- Forum: This is SolarChat !!
- Topic: Imaging with a T400 - 2023 session
- Replies: 12
- Views: 1281
Imaging with a T400 - 2023 session
Hi, I attempted imaging with a - non aluminized - 400mm newton last year, but is was not very successful. I gave a new try this year. The adage this year is "what can do the best, can then do the worst". It is some kind of French proverb, I hope it doesn't sound weird in English. There is ...
- Sat Sep 30, 2023 9:25 am
- Forum: Solar Scope Modifications
- Topic: Solar newton T400, version 2023
- Replies: 19
- Views: 2657
Solar newton T400, version 2023
As already mentioned, in solar imaging fluxes are high. Concentrating flux with optics leads to high local flux densities. The material is under high stress and can deteriorate. All kinds of situations can occur such as filter breaks, uncontrolled reflections, unexpected direct or indirect intercept...
- Tue Sep 26, 2023 6:49 pm
- Forum: This is SolarChat !!
- Topic: CaK Sun 23rd September
- Replies: 20
- Views: 1541
Re: CaK Sun 23rd September
Very interesting this double stack :-)
Great shots.
I gave a try at f30. More to come.
CS
Alex
Great shots.
I gave a try at f30. More to come.
CS
Alex
- Mon Sep 25, 2023 8:42 pm
- Forum: This is SolarChat !!
- Topic: Solar images in Ha 25th September 2023
- Replies: 10
- Views: 809
Re: Solar images in Ha 25th September 2023
Excellent.
Il like very much the closeup and the proms.
Alex
Il like very much the closeup and the proms.
Alex
- Mon Sep 25, 2023 8:38 pm
- Forum: This is SolarChat !!
- Topic: Images and animations from 9/24/2023
- Replies: 16
- Views: 1300
Re: Images and animations from 9/24/2023
Excellent
Alex
Alex
- Mon Sep 25, 2023 8:22 pm
- Forum: This is SolarChat !!
- Topic: Sun FD in H-Alpha, CaK and Continuum September 24th 2023
- Replies: 7
- Views: 745
Re: Sun FD in H-Alpha, CaK and Continuum September 24th 2023
Very fine!
Alex
Alex
- Mon Sep 25, 2023 8:20 pm
- Forum: This is SolarChat !!
- Topic: September 23, 2023 Ha and CaK closeups
- Replies: 10
- Views: 1018
Re: September 23, 2023 Ha and CaK closeups
Excellent session.
Alex
Alex
- Sat Sep 23, 2023 6:48 pm
- Forum: This is SolarChat !!
- Topic: Ha imaging with a T300 en Ha (II) - Solar zoo + Pinocchio
- Replies: 11
- Views: 894
Re: Ha imaging with a T300 en Ha (II) - Solar zoo + Pinocchio
Wow, nice results and interesting setup. How do you manage to get enough light for h-alpha with a solar newton? I can see a lot of bright dots in the surface images, what are they? Thank you all for your comments. I still rather see a lion than a bear, but I spent many years in Congo, maybe because...
- Fri Sep 22, 2023 8:50 pm
- Forum: This is SolarChat !!
- Topic: Ha imaging with a T300 en Ha (II) - Solar zoo + Pinocchio
- Replies: 11
- Views: 894
Ha imaging with a T300 en Ha (II) - Solar zoo + Pinocchio
We speak about the celestial zoo, why not the solar zoo? Out of a Ha session, I found some features which look like animals (with a piece of imagination). Anything special here? https://www.presencenet.be/nucleus2.0/media/13/20230922-20230812_01_S01_13_082909_lapl4_ap3978_S200_...r1540_Q08.jpg https...
- Fri Sep 22, 2023 4:53 pm
- Forum: This is SolarChat !!
- Topic: The ALtair 430-2 with a T300
- Replies: 9
- Views: 515
Re: The ALtair 430-2 with a T300
Thank you all.
CS
Alex
CS
Alex
- Thu Sep 21, 2023 8:40 pm
- Forum: This is SolarChat !!
- Topic: The ALtair 430-2 with a T300
- Replies: 9
- Views: 515
The ALtair 430-2 with a T300
Hi, Here a test of this new filter, with a 300mm solar newton. Probably not my best images, but the filter is well contrasted. https://www.presencenet.be/nucleus2.0/media/13/20230921-20230811_01_S01_21_092342_..._Q08.jpg https://www.presencenet.be/nucleus2.0/media/13/20230921-20230811_01_S01_32_0927...
- Wed Sep 13, 2023 5:49 pm
- Forum: This is SolarChat !!
- Topic: Calcium K imaging with a T300
- Replies: 3
- Views: 225
Calcium K imaging with a T300
A new imaging session from St Veran. Here the filter is a 2.4A CaK from Lunt. I needed to increase the gain and exposure time. The turbulence and internal turbulence impact grandly the quality. I reduced the amount of stacked frames to respectively 15 and 22 here. https://www.presencenet.be/nucleus2...
- Wed Sep 13, 2023 5:37 pm
- Forum: Solar Reference Library
- Topic: Impact of Ca K filter band pass on the visibility of filaments / comparison with SHG
- Replies: 26
- Views: 2126
Re: Impact of Ca K filter band pass on the visibility of filaments / comparison with SHG
Great work, very interesting.
I wonder the contrast increase by double stacking both 0.1nm.
It looks also to be a quite difficult test / observation.
I'm looking forward your further analysis / checks / high resolution pics.
CS
Alex
I wonder the contrast increase by double stacking both 0.1nm.
It looks also to be a quite difficult test / observation.
I'm looking forward your further analysis / checks / high resolution pics.
CS
Alex
- Fri Sep 01, 2023 7:39 pm
- Forum: This is SolarChat !!
- Topic: Antlia 393-3nm with a 300mm
- Replies: 18
- Views: 913
Re: Antlia 393-3nm with a 300mm
These are wonderful. A well deserved SPOD. Did you use Baader 3.8 film for these? Thank you all for the nice comments. Sorry, I'm not very active on the forum. It is a full aluminized mirror. There is probably a remaining internal turbulence in the optical train. I stacked only 10 pics. CS Alex
- Thu Aug 31, 2023 6:29 pm
- Forum: This is SolarChat !!
- Topic: Antlia 393-3nm with a 300mm
- Replies: 18
- Views: 913
Re: Antlia 393-3nm with a 300mm
These are excellent Alex, did you have the opportunity to compare it to the 430nm G Band filter? Thank you! Yes, I tried the new 430 from Altair, but on another day. The seeing is never the same; let's see. I still have several sessions to treat and I'm back at work already. It may take me a little...
- Wed Aug 30, 2023 7:39 pm
- Forum: This is SolarChat !!
- Topic: Antlia 393-3nm with a 300mm
- Replies: 18
- Views: 913
Antlia 393-3nm with a 300mm
Hi! Here the first pics taken with this new filter. The scope is a T300 solar newton. CS Alex https://www.presencenet.be/nucleus2.0/media/13/20230829-20230809_01_S01_33_094644_..._Q07.jpg The same spot, half an hour later: https://www.presencenet.be/nucleus2.0/media/13/20230829-20230809_01_S01_43_10...
- Wed Aug 30, 2023 7:39 pm
- Forum: SPoD Archive
- Topic: Antlia 393-3nm with a 300mm
- Replies: 5
- Views: 916
Antlia 393-3nm with a 300mm
Hi! Here the first pics taken with this new filter. The scope is a T300 solar newton. CS Alex https://www.presencenet.be/nucleus2.0/media/13/20230829-20230809_01_S01_33_094644_..._Q07.jpg The same spot, half an hour later: https://www.presencenet.be/nucleus2.0/media/13/20230829-20230809_01_S01_43_10...
- Thu Aug 17, 2023 7:12 pm
- Forum: This is SolarChat !!
- Topic: Imaging Aug 8th with a 300mm newton
- Replies: 6
- Views: 292
Imaging Aug 8th with a 300mm newton
Hello again :-) Here my first pics of the year made with a 300mm solar newton and a Solar Spectrum etalon. I have always problem finding the right balance during the contrast treatment. https://www.presencenet.be/nucleus2.0/media/13/20230817-20230808_01_S01_22_090441_..._Q09.jpg https://www.presence...
- Thu Aug 17, 2023 9:39 am
- Forum: This is SolarChat !!
- Topic: Double stack - Solar Spectrum + Daystar Q
- Replies: 6
- Views: 380
Re: Double stack - Solar Spectrum + Daystar Q
Thank you Arne, Alexandra. I had once a quark. It was very contrasted, but very dark also. I have seen 2 quarks here these days. From the first one, we couldn't get any decent view. The second one was quite good over ~3/4 of the field. Yes, both etalons in my test have blockers. Discussing with Chri...
- Wed Aug 16, 2023 4:36 pm
- Forum: This is SolarChat !!
- Topic: Flare Aug 7th / animation
- Replies: 6
- Views: 288
Flare Aug 7th / animation
Hello again, while adjusting the Etalon T°, I came across an active zone: https://www.presencenet.be/nucleus2.0/media/13/20230815-20230807_11_S02_13_162436_..._Q080.jpg We had a flare out of the most active (right) spot. Here a Youtube link: https://youtu.be/lLObGbh9zx0 One single pic: https://www.p...
- Wed Aug 16, 2023 4:07 pm
- Forum: This is SolarChat !!
- Topic: Double stack - Solar Spectrum + Daystar Q
- Replies: 6
- Views: 380
Double stack - Solar Spectrum + Daystar Q
Hi, I'm 2 weeks on holiday at the St Veran Observatory, with a few tests on my schedule. The first one, a double stack of a Solar Spectrum and a Daystar Quantum. Here the "basic" pic made with the Solar Spectrum. https://www.presencenet.be/nucleus2.0/media/13/20230810-20230807_01_S02_13_.....
- Thu May 25, 2023 6:38 pm
- Forum: This is SolarChat !!
- Topic: May 22, 2023 : big session of tests : Altair G-band, Antlia 393-3 nm, and various Ca K combinations
- Replies: 19
- Views: 1013
Re: May 22, 2023 : big session of tests : Altair G-band, Antlia 393-3 nm, and various Ca K combinations
Hi Christian,
Thank you for sharing your tests.
Comparing the 393 and 430, my preference goes for the 393nm.
The CaK double stack is a killer...
CS
Alex
Thank you for sharing your tests.
Comparing the 393 and 430, my preference goes for the 393nm.
The CaK double stack is a killer...
CS
Alex
- Sun Aug 21, 2022 8:12 pm
- Forum: Solar Scope Modifications
- Topic: Summary of Aluminized Newton Imagery (2022 August)
- Replies: 13
- Views: 2501
Re: Summary of Aluminized Newton Imagery (2022 August)
I have a question! What type Etalon you use?? Coronado? Lunt? or Quark Daystar? 0.7 A? 1A? 0.5 A? What size etalon? Second question! Do you use only 5x Powermate or you can use 2.5 Powermate? Thanks! For the CaK, I use a Lunt. It should be a B1800. For Lunt + Powermate x5, I use an ASI174 with 5.86...
- Sun Aug 21, 2022 8:02 pm
- Forum: Solar Scope Modifications
- Topic: Help me.(Stripping the Aluminum Coating from a Mirror)
- Replies: 6
- Views: 1640
Re: Help me.(Stripping the Aluminum Coating from a Mirror)
Hi Jong Ho, I have stripped several mirrors. Here a summary of one easy case and of one difficult case: https://solarchatforum.com/viewtopic.php?t=37485 https://solarchatforum.com/viewtopic.php?t=26525 I'm using Iron chloride, the same product for electronic printed circuit boards. Does it arm the m...
- Fri Aug 19, 2022 9:22 pm
- Forum: Solar Scope Modifications
- Topic: Summary of Aluminized Newton Imagery (2022 August)
- Replies: 13
- Views: 2501
Re: Summary of Aluminized Newton Imagery (2022 August)
One last word: keep in mind the safety and master what you are doing.
Alex.
Alex.
- Fri Aug 19, 2022 9:20 pm
- Forum: Solar Scope Modifications
- Topic: Summary of Aluminized Newton Imagery (2022 August)
- Replies: 13
- Views: 2501
Re: Summary of Aluminized Newton Imagery (2022 August)
Does an interference filter works like an ERF? How much does it cost? The first interferential filter is the elliptical mirror. It has a transmission ~400..700nm, so it cut a significant part of the flux. The second one is either a blue, passing ~100nm or a red. The red I used in my test was a Baad...
- Fri Aug 19, 2022 9:14 pm
- Forum: Solar Scope Modifications
- Topic: Summary of Aluminized Newton Imagery (2022 August)
- Replies: 13
- Views: 2501
Re: Summary of Aluminized Newton Imagery (2022 August)
That is some great experiment. Your WL images are fantastic. What type of Ha set-up did you use. Are you concerned with too much energy at the etalon? As shown, I can put my hand just after the telecentric; I may feel a little heat. Anyway, just to be sure, I put another interferential filter befor...
- Fri Aug 19, 2022 9:11 pm
- Forum: Solar Scope Modifications
- Topic: Summary of Aluminized Newton Imagery (2022 August)
- Replies: 13
- Views: 2501
Re: Summary of Aluminized Newton Imagery (2022 August)
The results are impressive and speak for themselves. My own modest experience with solar Newtonians is there was more than enough light when the primary was non-aluminized. I even experimented with both the primary and secondary having been stripped, but this did cut down the light too much. I have...
- Tue Aug 16, 2022 7:02 pm
- Forum: This is SolarChat !!
- Topic: small animation of August 16
- Replies: 21
- Views: 643
Re: small animation of August 16
Great captures!
Alex
Alex
- Mon Aug 15, 2022 9:39 pm
- Forum: This is SolarChat !!
- Topic: Ha on Aug 7Hi,th with a T300
- Replies: 15
- Views: 617
Re: Ha on Aug 7Hi,th with a T300
outstanding images - St. Veran is a great place for high res imaging as soon as the weather cooperates. Is this the mirror with direct ERF coating, or your solution from last year with the ERF in front of the secondary? Thank you. Not only the weather must cooperate, but the seeing also. Today, the...
- Mon Aug 15, 2022 9:34 pm
- Forum: This is SolarChat !!
- Topic: In Ha with a T300 (Aug. 10th)
- Replies: 10
- Views: 533
Re: In Ha with a T300 (Aug. 10th)
Hi Alex, It looks very promising. I think it is still not the full resolution of a 300mm mirror, but you have a better resolution now, than most of the H-alpha solar photos. May I ask which instrument is it? Did you use an energy rejection mirror, or a sub aperture ERF filter? Bests, Lászlo Francsi...
- Mon Aug 15, 2022 9:32 pm
- Forum: Solar Scope Modifications
- Topic: Summary of Aluminized Newton Imagery (2022 August)
- Replies: 13
- Views: 2501
Summary of Aluminized Newton Imagery (2022 August)
Solar imagery is dangerous. The fluxes involved are high, the concentration of local energy strong, the material is subject to stress and can deteriorate, any kind of circumstance can occur such as uncontrolled reflections, interception of the direct or reflected flux or any other phenomenon unexpec...
- Mon Aug 15, 2022 9:26 pm
- Forum: This is SolarChat !!
- Topic: 'First' solar light with a 400mm newton
- Replies: 21
- Views: 826
Re: 'First' solar light with a 400mm newton
One last question, Alex: how did you push the Powermate from 5x to 6.6x ? Franco Thank you all for your comments. I must confess that the setup isn't easy; my last session was not good. In order to check the magnification factor, I check the sun edge and use the 'circle' function of the still well ...
- Sat Aug 13, 2022 6:07 pm
- Forum: This is SolarChat !!
- Topic: Sun FD in H-Alpha, CaK and Continuum 11th of August 2022
- Replies: 9
- Views: 381
Re: Sun FD in H-Alpha, CaK and Continuum 11th of August 2022
Nice shots.
Alex
Alex
- Sat Aug 13, 2022 6:05 pm
- Forum: This is SolarChat !!
- Topic: Sun full disk 20220616 (30 panel mosaic)
- Replies: 13
- Views: 587
Re: Sun full disk 20220616 (30 panel mosaic)
To make a 30 pieces mosaic, you must have pretty consistent etalon, pretty stable conditions and properly planning your individual captures in order to have no join issue.
Great job.
Alex
Great job.
Alex
- Sat Aug 13, 2022 5:36 pm
- Forum: This is SolarChat !!
- Topic: Saturday Sun 13th August 2022
- Replies: 16
- Views: 556
Re: Saturday Sun 13th August 2022
Very fine; nice to see prominence in CaK.
Alex
Alex
- Sat Aug 13, 2022 5:34 pm
- Forum: This is SolarChat !!
- Topic: Sun in Whitelight 13th August 2022
- Replies: 9
- Views: 326
Re: Sun in Whitelight 13th August 2022
Indeed, very fine.
Alex
Alex
- Sat Aug 13, 2022 5:29 pm
- Forum: This is SolarChat !!
- Topic: CaK Closeups 12th August
- Replies: 11
- Views: 450
Re: CaK Closeups 12th August
Very fine and detailed.
I like Cak images.
Alex
I like Cak images.
Alex
- Sat Aug 13, 2022 5:26 pm
- Forum: This is SolarChat !!
- Topic: Full disks from Aug 12
- Replies: 5
- Views: 266
Re: Full disks from Aug 12
They are well joined and very crispy.
ALex
ALex
- Fri Aug 12, 2022 9:50 pm
- Forum: This is SolarChat !!
- Topic: In Ha with a T300 (Aug. 10th)
- Replies: 10
- Views: 533
Re: In Ha with a T300 (Aug. 10th)
Hi Alex, It looks very promising. I think it is still not the full resolution of a 300mm mirror, but you have a better resolution now, than most of the H-alpha solar photos. May I ask which instrument is it? Did you use an energy rejection mirror, or a sub aperture ERF filter? Bests, Lászlo Francsi...
- Thu Aug 11, 2022 7:34 pm
- Forum: This is SolarChat !!
- Topic: In Ha with a T300 (Aug. 10th)
- Replies: 10
- Views: 533
In Ha with a T300 (Aug. 10th)
Here some results from a session, where the seeing was better. Still with a 300mm solar newton. https://www.presencenet.be/nucleus2.0/media/13/20220811-20220810_01_S01_13_095119_...._Q08.jpg https://www.presencenet.be/nucleus2.0/media/13/20220811-20220810_01_S02_13_101157_...._Q08.jpg https://www.pr...
- Thu Aug 11, 2022 7:29 pm
- Forum: This is SolarChat !!
- Topic: Ha on Aug 7Hi,th with a T300
- Replies: 15
- Views: 617
Re: Ha on Aug 7Hi,th with a T300
Thank you, Alex. Just curious: how do accommodations work at St.Veran ? Do you stay there for few days or just for the day ? Franco The standard way is to build a team, fill a form explaining what your observation program is and what your preferred week is. Then a program committee attribute the we...