Search found 5046 matches

by rsfoto
Tue Sep 27, 2022 5:02 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: G2 Geomagnetic Storm 27th September 2022
Replies: 4
Views: 62

Re: G2 Geomagnetic Storm 27th September 2022

Hi Stuart,

WOW, that was a good one.
by rsfoto
Sun Sep 25, 2022 7:11 pm
Forum: This is SolarChat !!
Topic: Full disc 25-09-2022
Replies: 10
Views: 166

Full disc 25-09-2022

Hi, Had clear sky before as usual clouds rolled in at about 13:30 hours local time and below the discs. The big proms from the last days of course were gone :( As usual best seen in a new tab/window :bow2 https://rainerehlert.com/00_SCHForum/2022/09/Mosaico_20220925_Ha_9Q_RE.jpg https://rainerehlert...
by rsfoto
Sun Sep 25, 2022 5:01 pm
Forum: This is SolarChat !!
Topic: AR3110 day 2 25-09-22
Replies: 7
Views: 69

Re: AR3110 day 2 25-09-22

Great animation
by rsfoto
Thu Sep 22, 2022 2:57 pm
Forum: Sunlit Earth
Topic: No image but just a tale about ... creepy ...
Replies: 5
Views: 136

Re: No image but just a tale about ... creepy ...

Hi,

Today again one at about 06:16 UTC with a magnitude of 6.9 ...

This one did not move the ground where I live. In the Map below you can see the seismic activity in Mexico. Yuu will find me in the center of the Map and you can see it is seldom.

SSNMX_mapa_sismicidad_2021_web.jpg
SSNMX_mapa_sismicidad_2021_web.jpg (511.24 KiB) Viewed 75 times
by rsfoto
Tue Sep 20, 2022 2:03 pm
Forum: Sunlit Earth
Topic: No image but just a tale about ... creepy ...
Replies: 5
Views: 136

No image but just a tale about ... creepy ...

Hi, I lived in Mexico City for about 25 years and used to feel earthquakes and then after moving to central Mexico, a place allegedly with no earthquake activity, well yesterday the strong 7.6 Richter scale earthquake at 18:05 UTC was felt in my Observatory. Suddenly I started to get dizzy and did n...
by rsfoto
Sun Sep 18, 2022 4:46 am
Forum: This is SolarChat !!
Topic: Sun FD in H-Alpha, CaK and Continuum 17th of September 2022
Replies: 10
Views: 150

Re: Sun FD in H-Alpha, CaK and Continuum 17th of September 2022

Hi Arne,

Your H-alpha disc is just spectacular

WOW
by rsfoto
Fri Sep 16, 2022 3:18 pm
Forum: This is SolarChat !!
Topic: Question on capture settings
Replies: 20
Views: 297

Re: Question on capture settings

Hello Pupak, What camera is this and what is SW. I do not understand why imagers are still using 8 bit avi for capture. Unless you are capturing to display on a 1 inch screen for Twitter or something similar, it will be inadequate. Hi, I guess SW is software. BTW, most of the cameras we use are not...
by rsfoto
Thu Sep 15, 2022 4:07 pm
Forum: This is SolarChat !!
Topic: Question on capture settings
Replies: 20
Views: 297

Re: Question on capture settings

In SharpCap I aim for Gain no higher than 100. Preferably much less. I push the exposure as short as it will go. Though usually end up with 7ms for 88fps. 3ms improves highly mobile seeing conditions in my experience over 7 ms. Which needs much more Gain. I aim for a rather dull {dark] image on the...
by rsfoto
Thu Sep 15, 2022 2:59 pm
Forum: This is SolarChat !!
Topic: Question on capture settings
Replies: 20
Views: 297

Re: Question on capture settings

Hi Warren, I do adjust is the exposure and only when I see that there are some crackling solar spots in order to not to overexpose them too much ... I also adjust from time to time the tilt of the etalons but since a year I open the roof, point onto the Sun, go to the kitchen for a coffee, read the ...
by rsfoto
Mon Sep 12, 2022 4:24 pm
Forum: This is SolarChat !!
Topic: September Solar Challenge
Replies: 28
Views: 1164

Re: September Solar Challenge

Hi,

Just a side information which maybe could play a role

https://www.colourblindawareness.org/colour-blindness/

8.3% of men are colourblind while 0.5% of women are ...
by rsfoto
Mon Sep 12, 2022 2:46 pm
Forum: Solar Scope Modifications
Topic: Designing a new etalon for halpha
Replies: 19
Views: 420

Re: Designing a new etalon for halpha

The realities of commercial production of etalons for consumer-grade recreational solar astronomy etalons is what I believe the issue really is. I and a few others are or have been lucky enough to own some of the better commercial etalon examples with outstanding performance, but these were not che...
by rsfoto
Mon Sep 12, 2022 1:57 pm
Forum: This is SolarChat !!
Topic: Sat Flash? Should I have ducked? woe...
Replies: 21
Views: 258

Re: Sat Flash? Should I have ducked? woe...

Please describe your imaging equipment.

You have the Rainbow effect all over the Sun surface ...
by rsfoto
Sun Sep 11, 2022 4:51 pm
Forum: Forum Support Issues
Topic: Forum is awfully slow today ...
Replies: 1
Views: 207

Forum is awfully slow today ...

... and even non responding

Solarchat_Slow.JPG
Solarchat_Slow.JPG (38.25 KiB) Viewed 207 times
by rsfoto
Sun Sep 11, 2022 4:34 pm
Forum: Sunlit Earth
Topic: More then 4 weeks ...
Replies: 5
Views: 101

Re: More then 4 weeks ...

Moderators please tell me if this is not off topic here Thanks Hi Magnus, I think it should be relatively easy to program the moves from 1 square to another. Have you thought about that ? This is a 3D dimensional movement. Turret = left to right and right to left = yes, just define the angle = step...
by rsfoto
Sun Sep 11, 2022 3:05 am
Forum: This is SolarChat !!
Topic: Full disc 10-09-2022
Replies: 11
Views: 128

Re: Full disc 10-09-2022

I have wondered where you had gotten to Rainer. Is it just clouds? I hope You and Famly are OK. Nice images, as usual. The small " forest " of prominences on the NE limb are gorgeous and the white light image shows the granules superbly for such a small scope. I hope you are back... James...
by rsfoto
Sun Sep 11, 2022 3:04 am
Forum: This is SolarChat !!
Topic: Sat Flash? Should I have ducked? woe...
Replies: 21
Views: 258

Re: Sat Flash? Should I have ducked? woe...

Excerpt from that article: Should we be concerned? Maybe. First let's see how bright Bluewalker 3 actually is. It is scheduled to launch from Cape Canaveral on Sept 10th between 9:10 p.m. to 9:20 p.m. EDT. A batch of 34 Starlink satellites will share the ride. Doubt this is what you caught as it ha...
by rsfoto
Sun Sep 11, 2022 2:58 am
Forum: This is SolarChat !!
Topic: Full disc 10-09-2022
Replies: 11
Views: 128

Re: Full disc 10-09-2022

I have wondered where you had gotten to Rainer. Is it just clouds? I hope You and Famly are OK. Nice images, as usual. The small " forest " of prominences on the NE limb are gorgeous and the white light image shows the granules superbly for such a small scope. I hope you are back... James...
by rsfoto
Sat Sep 10, 2022 7:12 pm
Forum: Solar Scope Modifications
Topic: Designing a new etalon for halpha
Replies: 19
Views: 420

Re: Designing a new etalon for halpha

Sure, but what about putting it in one etalon instead of two? Hi, I am no expert in building etalons but there must be somewhere a catch that two etalons give a narrower bandwidth as compared to one because if there would be no catch we would already have the narrower bandwidth, or not ? BTW, IMHO ...
by rsfoto
Sat Sep 10, 2022 7:05 pm
Forum: This is SolarChat !!
Topic: Full disc 10-09-2022
Replies: 11
Views: 128

Full disc 10-09-2022

Hi, :mrgreen: Am I back in business ? or did somebody get jealous :lol: :lol: :lol: Here the discs before clouds rolled in late today. I really missed a lot the last 4 weeks. :( The equator is tilted today about 23.23° to the East. It is amazing how I did take much longer to develop the images as us...
by rsfoto
Sat Sep 10, 2022 2:30 pm
Forum: Sunlit Earth
Topic: More then 4 weeks ...
Replies: 5
Views: 101

Re: More then 4 weeks ...

Well done Rainer :hamster: are you going to be controlling it as an AI chess player or are you operating the arm to play for you? Alexandra Hi, That is a question for my friend who is the programmer and so far he told me that he wants the arm to make the movements directed by a chess engine like St...
by rsfoto
Fri Sep 09, 2022 10:51 pm
Forum: Sunlit Earth
Topic: More then 4 weeks ...
Replies: 5
Views: 101

More then 4 weeks ...

... gave me time to work ... Hi, ... on a homework. A friend has the idea that he wants to play chess with a Robotic arm and so the project was born. After 4 weeks eg. started August 10th the hardware is more or less finished and the testing of the motors has started in order to see how they behave ...
by rsfoto
Fri Sep 09, 2022 10:44 pm
Forum: Sunlit Earth
Topic: Sun behind mountains of clouds ! Sept 7th 2022
Replies: 4
Views: 99

Re: Sun behind mountains of clouds ! Sept 7th 2022

Hi,

Very dramatic. Looks like my place since 4 weeks :lol:
by rsfoto
Wed Sep 07, 2022 3:55 pm
Forum: Sunlit Earth
Topic: Green Woodpecker
Replies: 3
Views: 69

Re: Green Woodpecker

Hi Jochen,
... good enough ...
This is a terrible understatement ... :shock:

What a great shot and interesting green colour. Very seldom seen such a green on a bird ...

WOW
by rsfoto
Wed Aug 31, 2022 1:52 pm
Forum: Sunlit Earth
Topic: Sunlit Dragonfly
Replies: 2
Views: 77

Re: Sunlit Dragonfly

I can see why it is called 'Flame', what an amazing colour :hamster: ours in the UK seem to be all brown, well, all the ones I have ever seen have been. How large was he/she? Alexandra Hi Alexandra, Wingspan between 7 and 8 cm averaged about 3 inches Yes I read about the brown UK dragonflies named ...