Search found 456 matches

by DavidP
Sat Apr 27, 2024 3:02 am
Forum: This is SolarChat !!
Topic: Farewell Animation to AR3645 et al 4/26/2024
Replies: 10
Views: 180

Re: Farewell Animation to AR3645 et al 4/26/2024

I looove that animation
by DavidP
Wed Apr 24, 2024 4:55 pm
Forum: This is SolarChat !!
Topic: Saturday 20th April 2024
Replies: 25
Views: 367

Re: Saturday 20th April 2024

Wow. These are wonderful images Alexandra. The combination of the detail and the larger scale really sucks you in.
by DavidP
Tue Apr 23, 2024 7:52 pm
Forum: This is SolarChat !!
Topic: AR 3646 and 3644 WL with 9.25”
Replies: 11
Views: 232

Re: AR 3646 and 3644 WL with 9.25”

Thank you, Mark. I was thinking the same. And this brings up something I’ve been wondering. Christian suggests the smallest radius for sharpening be in the 1.3 to 1.6 range. Whereas I’ve heard of others consistently using from 0.7 to 0.9. I realize it depends on image scale and seeing conditions, bu...
by DavidP
Tue Apr 23, 2024 6:45 pm
Forum: This is SolarChat !!
Topic: Rare passing of the Sun over Ireland
Replies: 4
Views: 157

Re: Rare passing of the Sun over Ireland

That is really funny.
I’m glad you got to experience that rare transit event.
by DavidP
Tue Apr 23, 2024 5:28 pm
Forum: This is SolarChat !!
Topic: AR 3646 and 3644 WL with 9.25”
Replies: 11
Views: 232

AR 3646 and 3644 WL with 9.25”

I’m having fun doing some white light again with my Tri-band, especially with all the current activity.
These are done with an 0III and roughly 30 frames stacked.
I always appreciate critical feedback on processing.
IMG_1270.jpeg
IMG_1270.jpeg (953.86 KiB) Viewed 232 times
IMG_1269.jpeg
IMG_1269.jpeg (1.37 MiB) Viewed 232 times
IMG_1268.jpeg
IMG_1268.jpeg (1.47 MiB) Viewed 232 times
by DavidP
Mon Apr 22, 2024 9:58 pm
Forum: This is SolarChat !!
Topic: 393.3nm K-Line imaging session w/stop down mask.
Replies: 36
Views: 773

Re: 393.3nm K-Line imaging session w/stop down mask.

Very nice Ca images James. Both the contrast in the detail are excellent.
by DavidP
Mon Apr 22, 2024 9:43 pm
Forum: This is SolarChat !!
Topic: K-line and Ca-k from today
Replies: 25
Views: 611

Re: K-line and Ca-k from today

Wow Dennis. These are top notch.
I’m glad you got a little clear whether
by DavidP
Sat Apr 20, 2024 3:54 am
Forum: This is SolarChat !!
Topic: Calcium prom attempts!
Replies: 24
Views: 677

Re: Calcium prom attempts!

Nice job, capturing an elusive prey.
Wonderful animation
by DavidP
Fri Apr 19, 2024 1:00 pm
Forum: This is SolarChat !!
Topic: AR3643 AR3645 AR3647 & AR3637
Replies: 7
Views: 220

Re: AR3643 AR3645 AR3647 & AR3637

Very nice images of a very complex region! Well done
by DavidP
Thu Apr 18, 2024 9:24 pm
Forum: This is SolarChat !!
Topic: Wednesday Morning Ha Roundup 2024-04-17
Replies: 9
Views: 218

Re: Wednesday Morning Ha Roundup 2024-04-17

You’re doing a wonderful job with that Lunt Paul.
Very nice details. My favorite is the first image
by DavidP
Thu Apr 18, 2024 9:19 pm
Forum: SPoD Archive
Topic: Triple Stack
Replies: 23
Views: 209

Re: Triple Stack

Very nice image Ivan. Congratulations on the new set up.
I am impressed you can get 7ms Exposures with low gain using the etalons.
Does that require removing any filters in them?
by DavidP
Thu Apr 18, 2024 9:19 pm
Forum: This is SolarChat !!
Topic: Triple Stack
Replies: 24
Views: 655

Re: Triple Stack

Very nice image Ivan. Congratulations on the new set up.
I am impressed you can get 7ms Exposures with low gain using the etalons.
Does that require removing any filters in them?
by DavidP
Tue Apr 16, 2024 8:52 pm
Forum: This is SolarChat !!
Topic: Major Active Regions [High Res], Discs | HA, CaK, Cont | April 16th 2024
Replies: 12
Views: 330

Re: Major Active Regions [High Res], Discs | HA, CaK, Cont | April 16th 2024

Nice images, Marty.
I especially like the calcium images without color added
by DavidP
Tue Apr 16, 2024 6:04 pm
Forum: This is SolarChat !!
Topic: Looping prominence 14th April
Replies: 16
Views: 332

Re: Looping prominence 14th April

Thanks folks, I am really impressed by the amount of detail it's possible to get with the Lunt 60, this was imaged at ~0.71"/pixel. I'm now thinking about a "Marty mod" for it (https://solarchatforum.com/viewtopic.php?t=34331) and I can see a Lunt 100 would make an ideal retirement g...
by DavidP
Mon Apr 15, 2024 2:31 am
Forum: This is SolarChat !!
Topic: H-Alpha closeup from today
Replies: 53
Views: 998

Re: H-Alpha closeup from today

Very very nice.
Wow. F/100. So it turns out you can double up telecentrics. What was the final focal ratio?
by DavidP
Sun Apr 14, 2024 11:03 pm
Forum: This is SolarChat !!
Topic: Recent WL AR3615 and 3634 with 150mm and 235mm
Replies: 10
Views: 246

Re: Recent WL AR3615 and 3634 with 150mm and 235mm

Thank you all. It was fun to get out look at the sun in detail.
The AR3634 image didn’t transfer very well.
Here’s another attempt (low res jpeg)
IMG_1217.jpeg
IMG_1217.jpeg (337.07 KiB) Viewed 186 times
by DavidP
Sun Apr 14, 2024 9:43 pm
Forum: Solar Scope Modifications
Topic: Doublestack for mod
Replies: 62
Views: 13797

Re: Doublestack for mod

These are wonderful. I’m glad it worked out.
by DavidP
Sun Apr 14, 2024 5:43 pm
Forum: This is SolarChat !!
Topic: Recent WL AR3615 and 3634 with 150mm and 235mm
Replies: 10
Views: 246

Recent WL AR3615 and 3634 with 150mm and 235mm

After months being down, I finally got my mount back up and running. Here are a couple of white light images. I did the last couple of weeks. Orientation is not true. This is AR3615 for Allen with a 150mm and a Continuum filter. IMG_1208.jpeg This is AR3634 from 4/14/24 with a 9.25” and an OIII. Not...
by DavidP
Wed Apr 10, 2024 1:25 am
Forum: Solar Scope Modifications
Topic: Doublestack for mod
Replies: 62
Views: 13797

Re: Doublestack for mod

Congratulations. Very well done.
Can you explain the “tilter and shifter in the second part adapter”? Do you have any images of this?
by DavidP
Mon Apr 01, 2024 11:45 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Alluxa Ca K 393.37- 0.1 nm filter now listed in Alluxa catalog
Replies: 7
Views: 492

Re: Alluxa Ca K 393.37- 0.1 nm filter now listed in Alluxa catalog

Those are outstanding images Christian.
Alluxa quotes just 1-2 weeks on these
by DavidP
Fri Mar 29, 2024 8:20 pm
Forum: SPoD Archive
Topic: AR 3614, 3615 with Soleye 300 Violet and Ca-K filter
Replies: 9
Views: 164

Re: AR 3614, 3615 with Soleye 300 Violet and Ca-K filter

Absolutely top-notch images!
You should be proud of the images and the telescope you have created.
by DavidP
Fri Mar 29, 2024 8:20 pm
Forum: This is SolarChat !!
Topic: AR 3614, 3615 with Soleye 300 Violet and Ca-K filter
Replies: 10
Views: 370

Re: AR 3614, 3615 with Soleye 300 Violet and Ca-K filter

Absolutely top-notch images!
You should be proud of the images and the telescope you have created.
by DavidP
Mon Mar 25, 2024 3:05 am
Forum: This is SolarChat !!
Topic: Quick closeup in Ca-k from today
Replies: 27
Views: 668

Re: Quick closeup in Ca-k from today

These are aesthetically gorgeous images Dennis.
AR2615 has been amazing
by DavidP
Sun Feb 25, 2024 4:45 pm
Forum: This is SolarChat !!
Topic: AR3590 WL CaK York
Replies: 19
Views: 417

Re: AR3590 WL CaK York

Beautiful images Nic with very nice detail
by DavidP
Sat Feb 24, 2024 2:08 pm
Forum: This is SolarChat !!
Topic: Big spot and first light of Altair 393-3nm filter / Ca K Alluxa 0.37 nm / 23 feb
Replies: 18
Views: 498

Re: Big spot and first light of Altair 393-3nm filter / Ca K Alluxa 0.37 nm / 23 feb

Very nice images and comparisons Christian.
I am unfamiliar with the term “visualization thresholds”. What does that refer to?
by DavidP
Mon Feb 12, 2024 3:53 pm
Forum: This is SolarChat !!
Topic: February 4 - 7 and 11
Replies: 19
Views: 544

Re: February 4 - 7 and 11

That prominence!
by DavidP
Mon Feb 12, 2024 2:23 pm
Forum: This is SolarChat !!
Topic: Monday Sun 12th Feb 2024
Replies: 19
Views: 510

Re: Monday Sun 12th Feb 2024

Just stunning images Stuart.
So well done.
by DavidP
Mon Feb 12, 2024 3:02 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: New CaK etalons from Solar Spectrum
Replies: 29
Views: 2117

Re: New CaK etalons from Solar Spectrum

You might contact Bob at Alpine Astronomical about availability
by DavidP
Sun Feb 11, 2024 3:50 am
Forum: This is SolarChat !!
Topic: new Hi-res photospheric telescope
Replies: 76
Views: 5830

Re: new Hi-res photospheric telescope

Thierry.
Those absolutely stunning images.
I have never seen a white light video equal to that.
by DavidP
Fri Feb 09, 2024 10:00 pm
Forum: This is SolarChat !!
Topic: Feb 8th, 2024 La Grande AR13576
Replies: 11
Views: 464

Re: Feb 8th, 2024 La Grande AR13576

Very nice images.
Especially like the high res white light.
Well done
by DavidP
Tue Feb 06, 2024 12:22 am
Forum: This is SolarChat !!
Topic: Feb 3rd - Multiple Filters
Replies: 18
Views: 759

Re: Feb 3rd - Multiple Filters

Nice work, Brian
I especially like the HA mosaics.
With Ha etalons there doesn’t seem to be quality guaranteed no matter how much you spend. My Solar Spectrum RG isn’t very uniform.
by DavidP
Thu Feb 01, 2024 2:33 am
Forum: This is SolarChat !!
Topic: 31 January 2024
Replies: 9
Views: 358

Re: 31 January 2024

Your second image is, indeed, excellent. You did a very good job of processing it.
by DavidP
Thu Feb 01, 2024 2:23 am
Forum: This is SolarChat !!
Topic: Solar images taken yesterday morning 2024.01.27
Replies: 23
Views: 808

Re: Solar images taken yesterday morning 2024.01.27

These are some very good images, Michael. I’m guessing they were taken with your Lunt and that it’s double stacked?
by DavidP
Tue Jan 30, 2024 12:37 am
Forum: Solar Scope Modifications
Topic: Does my blocking filter vignette?
Replies: 3
Views: 282

Re: Does my blocking filter vignette?

Thank you Mark
by DavidP
Mon Jan 29, 2024 3:35 am
Forum: This is SolarChat !!
Topic: More Ca-k testing
Replies: 17
Views: 804

Re: More Ca-k testing

Beautiful image. It was done with your SCT, right?
by DavidP
Sun Jan 28, 2024 11:46 pm
Forum: Solar Scope Modifications
Topic: Does my blocking filter vignette?
Replies: 3
Views: 282

Does my blocking filter vignette?

Is my blocking filter vignetting? My understanding of how this works is not great. So I have a 50 mm Lunt mod that I use on a couple of different telescopes. The first set up is: 2350mm fl + 4x TC + 50mm Lunt+ .4x 2” reducer. + 1200 blocker + 14x10mm chip The other is : 1500 fl + 4x TC + 50mm Lunt +...
by DavidP
Sat Jan 27, 2024 3:29 am
Forum: This is SolarChat !!
Topic: Jan 20 Huge Prom LuntLS60Mod first light
Replies: 23
Views: 811

Re: Jan 20 Huge Prom LuntLS60Mod first light

Welcome to the forum!
These are gorgeous images. Looking forward to more.
by DavidP
Tue Jan 16, 2024 3:27 am
Forum: This is SolarChat !!
Topic: Solar images from yesterday morning 2024.01.14
Replies: 18
Views: 659

Re: Solar images from yesterday morning 2024.01.14

Michael. Those white light images are stunning.
We all dream of creating such images.
Congratulations and well done
by DavidP
Sat Jan 13, 2024 7:06 pm
Forum: This is SolarChat !!
Topic: [Beginner] Help with noisy background
Replies: 13
Views: 461

Re: [Beginner] Help with noisy background

What does “unity” gain mean?
I understand “gain”, and understand “unity” as an expression of 1.
by DavidP
Sat Jan 13, 2024 2:06 am
Forum: SPoD Archive
Topic: 2024 01 10 - Bacon in a Frying Pan
Replies: 14
Views: 343

Re: 2024 01 10 - Bacon in a Frying Pan

That is a stunning animation. Well done
by DavidP
Sat Jan 13, 2024 2:06 am
Forum: This is SolarChat !!
Topic: 2024 01 10 - Bacon in a Frying Pan
Replies: 17
Views: 744

Re: 2024 01 10 - Bacon in a Frying Pan

That is a stunning animation. Well done
by DavidP
Wed Jan 10, 2024 4:15 pm
Forum: This is SolarChat !!
Topic: Corona and unfiltered prominence at sea level today
Replies: 14
Views: 804

Re: Corona and unfiltered prominence at sea level today

George. It’s just fantastic what you’ve been able to do. Very inspiring.
by DavidP
Mon Jan 08, 2024 1:52 am
Forum: This is SolarChat !!
Topic: Jan 7th, 2024 Two White Light Close-Ups
Replies: 11
Views: 677

Re: Jan 7th, 2024 Two White Light Close-Ups

Nice images. I also like the granulation in the second.
And with a Mak!
by DavidP
Sun Jan 07, 2024 3:19 am
Forum: SPoD Archive
Topic: Sun at Aphelion & Perihelion
Replies: 6
Views: 362

Re: Sun at Aphelion & Perihelion

Very cool.
Thank you for putting that together
by DavidP
Sun Jan 07, 2024 3:19 am
Forum: This is SolarChat !!
Topic: Sun at Aphelion & Perihelion
Replies: 12
Views: 738

Re: Sun at Aphelion & Perihelion

Very cool.
Thank you for putting that together