Search found 2798 matches

by yltansg
Mon Dec 18, 2023 1:17 pm
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Re: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing

Dear Arne, Nicspenceryork and Dennis,

Thank you very much for sharing your processed images. They are lovely and you have brought out so much details hidden in the raw images.

Alfred
by yltansg
Sat Dec 16, 2023 3:01 pm
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Re: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing

marktownley wrote: Sat Dec 16, 2023 12:21 pm Yes, that works. You have some nice raw data here Alfred :)

alfred.jpg
Thank you, Mark. That is a nicely processed, I can see the fibrils clearly :bow I use Registax for pp. Did you use Imppg? Can you share your processing settings?

Alfred
by yltansg
Sat Dec 16, 2023 2:59 pm
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Re: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing

Here is my attempt: https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjSz37iyO5NbQ98DPY9wUezNBnx_SvBmmyGOEKWmTOGYz8Jv1x2dLuAkuydtAvOh363Lxcl7VlMMhhp5jQUf40ZCOzNr_bNJRE2l4Te9maNMilZD2Jqp22VHkY0-Kcs_jL9MqBMS_AriGuWpKyc8GcTFNJXllpVyYsdGKFI2pKMNfT4PmbSmzuBXS3mya4/s1926/4824%20lossless%2024L3D01...
by yltansg
Sat Dec 16, 2023 9:28 am
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Re: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing

You still can't download a 16bit version from the astrobin link. There is no option to download there. If you right click the image and 'save as' you get an 8 bit jpeg. Try uploading the 16bit tiff file as attachment to a post. Dear Mark, Thanks for the feedback that it is not working at Astrobin. ...
by yltansg
Fri Dec 15, 2023 11:54 pm
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Re: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing

Hello Alfred, The processing of the last image is quite good ! You need to tune the 0.1 nm filter right on Ca K to have some detection of the fibrils. Do you have a tilt mount ? Is it simple-stack or double-stack ? Dear Christian, It is double-stacked. Thanks for reminding me to tilt the NB filter....
by yltansg
Fri Dec 15, 2023 11:45 pm
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Re: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing

Dennis wrote: Fri Dec 15, 2023 4:50 pm
Spot on processing, looks great. Also its more visible that you reduced the spherical abberation to a very good low value vs. the old lens spacing.
Thanks, Dennis for your feedback. The re-spacing definitely improved the C6R's CAK performance!!

Alfred
by yltansg
Fri Dec 15, 2023 11:42 pm
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Re: Unprocessed Alluxa CAK Stacked Files - For you to play at processing

Dear Yltansg Finally, the astrob. in image can be seen, Is CR6 full caliber or reduced caliber occlusion? What is the bandwidth of Alluxa? Thank you for your reply. Alex Hi Alex, I have used full 6" on that capture. The Alluxa filter is 0.1 nm. I have also uploaded 16-bit images for playing at...
by yltansg
Fri Dec 15, 2023 1:34 pm
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Re: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing

Taking Mark's and friends' inputs, I have re-processed the image using a 16bit stacked image and increase the Gamma setting: https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEieVaMAsHIT0sec3fB1ps3pATe9FYpHRZ6S07EHpl_-P4nqRr9e5-I753co6nwQkmu2IVGuA658b9SSVLdW-Z2uOb3adRmHPkzfgIvCR606IF-l5jOM_y...
by yltansg
Fri Dec 15, 2023 8:10 am
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Re: Unprocessed Alluxa CAK Stacked Files - For you to play at processing

Hi Alfred. I always capture in 8 bit in FC, AS3 saves the file as a 16 bit tiff . The point of doing this is that the image file that is post processed (in ImPPG or whatever) being 16bit is less susceptible to noise and posterisation effects 65000+ (16bit) shades of grey compared to 256 (8 bit). No...
by yltansg
Fri Dec 15, 2023 3:37 am
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Re: Unprocessed Alluxa CAK Stacked Files - For you to play at processing

I can't see anyway to download a 16bit file there Alfred, it just lets me download an 8bit jpeg? Hi Mark, The video/FITS were captured using 8bit capture. The FPS dropped tremendously to 10-20 FPS when I selected 16Bit capture. I guess it does not help if I convert the stacked files to 16bit format...
by yltansg
Thu Dec 14, 2023 8:17 am
Forum: This is SolarChat !!
Topic: Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing
Replies: 26
Views: 2118

Unprocessed Alluxa CAK Stacked 16bit Files - For you to play at processing

Dear Friends, Previously I have posted some images - https://solarchatforum.com/viewtopic.php?t=43421 I am grateful for the feedback. On Mark's suggestion, I have provided links to the unprocessed stacked images for you to play at processing. https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvX...
by yltansg
Thu Dec 14, 2023 8:08 am
Forum: This is SolarChat !!
Topic: Testing CAK Alluxa Filters - 13 Dec Singapore
Replies: 12
Views: 626

Re: Testing CAK Alluxa Filters - 13 Dec Singapore

Good result Alfred! Number 2 is my preferred image. Conditions like in the first pic are always going to steal contrast in CaK. How many frames did you stack? - says 70(58%)/1923 - was it a stack of 70 frames? What is the 58%? Do you have a unprocessed 16bit tiff version of the stacked file you can...
by yltansg
Wed Dec 13, 2023 1:10 pm
Forum: This is SolarChat !!
Topic: Testing CAK Alluxa Filters - 13 Dec Singapore
Replies: 12
Views: 626

Re: Testing CAK Alluxa Filters - 13 Dec Singapore

I agree with Maurits, Alfred. Maybe the processing is a bit smoother ? Well done all of them anyway. Franco Thanks for sharing your feedback, Franco. Yes, it is smoother. I tried using Registax and Imppg. These images are produced with Registax. I am trying different settings with both software. Al...
by yltansg
Wed Dec 13, 2023 1:00 pm
Forum: This is SolarChat !!
Topic: Testing CAK Alluxa Filters - 13 Dec Singapore
Replies: 12
Views: 626

Re: Testing CAK Alluxa Filters - 13 Dec Singapore

MAURITS wrote: Wed Dec 13, 2023 9:44 am Alfred, my vote for the second version.
Thanks, Maurits. I performed lesser sharpening on Version 2. All of them looks noisy - I am using Christian's images as a reference to improve my post-processing.

Alfred
by yltansg
Wed Dec 13, 2023 12:55 pm
Forum: This is SolarChat !!
Topic: Testing CAK Alluxa Filters - 13 Dec Singapore
Replies: 12
Views: 626

Re: Testing CAK Alluxa Filters - 13 Dec Singapore

alexhuangyan wrote: Wed Dec 13, 2023 12:21 pm Hello, have you uploaded the pictures to the forum? It's strange, I can't see the pictures you sent in Shanghai.
Hi Alex,

Thanks for your feedback. That is strange. The others have seen them and shared their feedback. You may want to quit the browser and try again.

Alfred
by yltansg
Wed Dec 13, 2023 12:52 pm
Forum: This is SolarChat !!
Topic: Testing CAK Alluxa Filters - 13 Dec Singapore
Replies: 12
Views: 626

Re: Testing CAK Alluxa Filters - 13 Dec Singapore

Version 2 :) I did this blind before I read the other posts :) Wow!! Alfred, you are so lucky to have these filters, they give such amazing results :bow :hamster: :bow Alexandra Thanks for giving me your feedback, Alexandra. These filters are similar to those that Christian has. I have a lot to lea...
by yltansg
Wed Dec 13, 2023 9:05 am
Forum: This is SolarChat !!
Topic: Testing CAK Alluxa Filters - 13 Dec Singapore
Replies: 12
Views: 626

Testing CAK Alluxa Filters - 13 Dec Singapore

I am just grateful to be able to have a few minutes of imaging window this morning using a Celestron C6R, blue ERF (from Apollo), Apollo's Gen CAK filter module and ASI290MM: https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgKPCEOW1g2sq8hrgtzOPZDjo2R03-d2Ka58SlS1dLnhB0t9lClznHjFdwfbSSbgsOo...
by yltansg
Wed Dec 13, 2023 8:58 am
Forum: This is SolarChat !!
Topic: THANKS to the British Astronomical Association!
Replies: 8
Views: 912

Re: THANKS to the British Astronomical Association!

Hi Alfred, Please don't forget to email Lyn Smith (solar section director) to be added to the solar section mailing list, and make observation submissions. Solar@britastro.org I'm trying to make this an automatic thing but it doesn't seem to be at the moment. Alexandra Thank you for helping me link...
by yltansg
Sun Dec 10, 2023 2:48 am
Forum: This is SolarChat !!
Topic: First Light CAK System 7 Dec Singapore
Replies: 21
Views: 916

Re: First Light CAK System 7 Dec Singapore

What are you using for blocking filters? Hi Mark, They came as a package from Apollo. According to Apollo, the blocking filter system (BF1 and BF2) is 4nm FWHM @ 95% transmission blocked OD7+ in the UV and OD4 to 1400nm. Each blocking filter has a few lenses in it and I didn't want to take it apart...
by yltansg
Sun Dec 10, 2023 2:32 am
Forum: This is SolarChat !!
Topic: First Light CAK System 7 Dec Singapore
Replies: 21
Views: 916

Re: First Light CAK System 7 Dec Singapore

Hi Alfred, Here is the triple-stack system I use : http://astrosurf.com/viladrich/astro/instrument/intrumentCaK/Tilt-mount-TS.jpg http://astrosurf.com/viladrich/astro/instrument/intrumentCaK/Tilt-mount-TS-b.jpg The top one was done by a mechanist. Unfortunately, he does no longer work for amateurs....
by yltansg
Sun Dec 10, 2023 2:18 am
Forum: This is SolarChat !!
Topic: Full Disc 9/12/23
Replies: 7
Views: 520

Re: Full Disc 9/12/23

Hi Cybermayberry,

Nice disks despite the seeing condition. Thank you.

Alfred
by yltansg
Sun Dec 10, 2023 2:09 am
Forum: This is SolarChat !!
Topic: Saturday Sunshine 9th December
Replies: 15
Views: 817

Re: Saturday Sunshine 9th December

Lovely disks, Mark.

Nice to see your garden and setup. Is that a birding tripod?

Your persistence paid off. :bow It reminds me of my waiting for small imaging windows in between clouds :)

Alfred
by yltansg
Sun Dec 10, 2023 1:58 am
Forum: This is SolarChat !!
Topic: HR Ca K images with single/double/triple stack Alluxa Ca K filters and top seeing / 29 sept
Replies: 30
Views: 2199

Re: HR Ca K images with single/double/triple stack Ca K Alluxa filters and top seeing / 29 sept

Dear Christian,

I can see excellent images when the Alluxa filters are tuned to Ca K!! You mentioned using a spectro. I am guessing it is a professional test instrument. What model is it? May be I can collaborate with the local university if it has one :)

Alfred
by yltansg
Sun Dec 10, 2023 1:58 am
Forum: SPoD Archive
Topic: HR Ca K images with single/double/triple stack Ca K Alluxa filters and top seeing / 29 sept
Replies: 20
Views: 961

Re: HR Ca K images with single/double/triple stack Ca K Alluxa filters and top seeing / 29 sept

Dear Christian,

I can see excellent images when the Alluxa filters are tuned to Ca K!! You mentioned using a spectro. I am guessing it is a professional test instrument. What model is it? May be I can collaborate with the local university if it has one :)

Alfred
by yltansg
Sun Dec 10, 2023 1:27 am
Forum: This is SolarChat !!
Topic: 2023 12 07 Smoke Signals
Replies: 24
Views: 1740

Re: 2023 12 07 Smoke Signals

Great capture and processing, Simon!!

Thank you.

Alfred
by yltansg
Sun Dec 10, 2023 1:04 am
Forum: This is SolarChat !!
Topic: Shots from 12/7/2023
Replies: 18
Views: 1096

Re: Shots from 12/7/2023

Hi Warren,

Nice setup and area surrounding the imaging site. The SeeStar and images look great. Thanks.

Alfred
by yltansg
Sun Dec 10, 2023 12:53 am
Forum: This is SolarChat !!
Topic: THANKS to the British Astronomical Association!
Replies: 8
Views: 912

Re: THANKS to the British Astronomical Association!

solarchat wrote: Wed Dec 06, 2023 11:07 pm Great big thanks to the British Astronomical Association (BAA) for renewing their yearly sponsorship of the Solarchat forum!

If you’re not a member, you should join!

www.britastro.org
Thanks, Stephen.

I have just joined BAA!

Alfred
by yltansg
Sat Dec 09, 2023 7:21 am
Forum: This is SolarChat !!
Topic: First Light CAK System 7 Dec Singapore
Replies: 21
Views: 916

Re: First Light CAK System 7 Dec Singapore

Can you tell us more about the module Alfred - has it a 3d printed skybender on it? Hi Mark, I will look into the tilting soon. Currently, the module has Blocking filters, x3 telecentric, reducer (when there is need for full disk imaging) and Alluxa filters: https://blogger.googleusercontent.com/im...
by yltansg
Sat Dec 09, 2023 7:12 am
Forum: This is SolarChat !!
Topic: First Light CAK System 7 Dec Singapore
Replies: 21
Views: 916

Re: First Light CAK System 7 Dec Singapore

ffellah wrote: Fri Dec 08, 2023 11:39 am Quite an elaborate setup, Alfred, but the results are terrific.

Franco
Hi Franco,

Thank you. I am still working on the configurations for best results.

Alfred
by yltansg
Sat Dec 09, 2023 7:09 am
Forum: This is SolarChat !!
Topic: First Light CAK System 7 Dec Singapore
Replies: 21
Views: 916

Re: First Light CAK System 7 Dec Singapore

Hello Alfred, Have you tilted the Alluxa filters ? As you know, they are not right on Ca K center, so you need to tilt them. This being said, resolution is quite good. Hi Christian, I expected and can see the resolution improvement in this CAK system from Apollo. Thank you for your question. This p...
by yltansg
Sat Dec 09, 2023 6:52 am
Forum: This is SolarChat !!
Topic: First Light CAK System 7 Dec Singapore
Replies: 21
Views: 916

Re: First Light CAK System 7 Dec Singapore

Alfred: Beautiful results in spite of the clouds, though you had very good seeing. Best regards. Eric. Hi Eric, The 2 images were taken at 9:05 and 9:19 am during sub-arcsecond seeing. We had about an hour of sub-arcsecond seeing. The sky looked like this few minutes before the second image was tak...
by yltansg
Sat Dec 09, 2023 6:18 am
Forum: This is SolarChat !!
Topic: First Light CAK System 7 Dec Singapore
Replies: 21
Views: 916

Re: First Light CAK System 7 Dec Singapore

It is amazing you did so well through all of those clouds. Hi James, We are blessed with occasional good seeing. And clouds are usually not too far away :) Most of my photos of my setup show clouds in the background because I will be busy with focussing and recording the video when there are no clo...
by yltansg
Sat Dec 09, 2023 6:14 am
Forum: This is SolarChat !!
Topic: First Light CAK System 7 Dec Singapore
Replies: 21
Views: 916

Re: First Light CAK System 7 Dec Singapore

marktownley wrote: Thu Dec 07, 2023 10:13 pm These are excellent Alfred, your best yet!
Thanks, Mark. I am expecting much more from this setup. Need to put in more time to learn and optimise the imaging train, e.g. tilting the Alluxa filters as pointed out by Christian.

Alfred
by yltansg
Sat Dec 09, 2023 6:09 am
Forum: This is SolarChat !!
Topic: Prom of December 8, 2023-from Sicily
Replies: 8
Views: 376

Re: Prom of December 8, 2023-from Sicily

Hi Yuri,

Your huge close-up complemented Warren's animation and still shot. I have a much clearer picture of it. Thanks.

Alfred
by yltansg
Sat Dec 09, 2023 6:06 am
Forum: This is SolarChat !!
Topic: Disk and NW Limb Animation 12/8/2023
Replies: 16
Views: 786

Re: Disk and NW Limb Animation 12/8/2023

Hi Warren,

Liked the still shots of the proms as well as the animation. 1 hr and 20mins - that is a very long duration. How many video did you capture and what was the duration of each and the interval between them?

Alfred
by yltansg
Sat Dec 09, 2023 5:58 am
Forum: This is SolarChat !!
Topic: 5 December active area.
Replies: 12
Views: 639

Re: 5 December active area.

Hi Ralph,

I would be so pleased to have caught something like that. Congrats!!

Alfred
by yltansg
Sat Dec 09, 2023 5:53 am
Forum: This is SolarChat !!
Topic: I need to pay closure attention
Replies: 7
Views: 448

Re: I need to pay closure attention

Hi Cybermayberry,

That is indeed a very tall prom!! Has happened to me in the past. Nowadays, I refer to live web solar images (e.g. https://gong2.nso.edu/ to make sure I don't miss any interesting feature. Kind of cheating but it helps.

Alfred
by yltansg
Sat Dec 09, 2023 5:42 am
Forum: SPoD Archive
Topic: SUN December 8 - Filament disappearance
Replies: 10
Views: 500

Re: SUN December 8 - Filament disappearance

Nice catch, Richard.

Alfred
by yltansg
Sat Dec 09, 2023 5:42 am
Forum: This is SolarChat !!
Topic: SUN December 8 - Filament disappearance
Replies: 9
Views: 582

Re: SUN December 8 - Filament disappearance

Nice catch, Richard.

Alfred
by yltansg
Sat Dec 09, 2023 5:37 am
Forum: This is SolarChat !!
Topic: Today's SUN (20231208) | TV NP127/LUNT152
Replies: 17
Views: 1066

Re: Today's SUN (20231208) | TV NP127/LUNT152

Hi Pedro,

Always a delight to see your images and equipment. The screenshots look useful. I will take time to see what other FireCapture functions I have been missing.

Alfred
by yltansg
Sat Dec 09, 2023 5:21 am
Forum: This is SolarChat !!
Topic: Solar granulation in photosphere near AR13394 and 13395
Replies: 24
Views: 1101

Re: Solar granulation in photosphere near AR13394 and 13395

Hi Sergio,

Like them all, especially the new additions.

Alfred
by yltansg
Sat Dec 09, 2023 5:14 am
Forum: This is SolarChat !!
Topic: Some CaK and Ha from 6 December.
Replies: 4
Views: 262

Re: Some CaK and Ha from 6 December.

Hi Brian,

That is a nice collection of close-ups. I especially like the tall proms. Looks like a mythical creature guarding the limb.

Alfred
by yltansg
Sat Dec 09, 2023 5:05 am
Forum: This is SolarChat !!
Topic: 2023.12.7 Full disk white light 540&CAH&HA
Replies: 7
Views: 567

Re: 2023.12.7 Full disk white light 540&CAH&HA

Hi Alex,

Thanks for sharing the nice disks.

Alfred
by yltansg
Sat Dec 09, 2023 4:57 am
Forum: This is SolarChat !!
Topic: 2023.12.7 CC8ERF AR3507*AR3511 CAH&HA high resolution
Replies: 7
Views: 545

Re: 2023.12.7 CC8ERF AR3507*AR3511 CAH&HA high resolution

Hi Alex,

Nice collection of close-ups. The last one is interesting. You are using a Dual-Band ERF. What wavelength is that?

Where are you imaging from?

Alfred
by yltansg
Sat Dec 09, 2023 4:34 am
Forum: This is SolarChat !!
Topic: A prominence like a forest,07/12/2023
Replies: 8
Views: 404

Re: A prominence like a forest,07/12/2023

szzj369 wrote: Sat Dec 09, 2023 1:39 am It took 26 minutes to shoot 46 videos, superimposed a GIF.
Hi szzj369,

Nice prom animation. Did you automate the video recording? How do you deal with clouds getting in the way?

Alfred
by yltansg
Thu Dec 07, 2023 2:48 pm
Forum: This is SolarChat !!
Topic: First Light CAK System 7 Dec Singapore
Replies: 21
Views: 916

First Light CAK System 7 Dec Singapore

This is the setup comprises a re-spaced 6CR with blue ERF, 2 blocking filters, 3x telecentric, 2 Alluxa NB filters (0.14nm @ 393.37nm) and ASI290mm camera with settings at Gain 129 (21%) and Shutter at 2.01ms: https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhj5xb-B3Gv1cNFzMxvd2UUFVwenc5pc...
by yltansg
Sun Dec 03, 2023 2:18 pm
Forum: This is SolarChat !!
Topic: CAK Imaging with Re-spaced C6R refractor - 30 Nov 23 (New Images Added)
Replies: 24
Views: 884

Re: CAK Imaging with Re-spaced C6R refractor - 30 Nov 23 (New Images Added)

christian viladrich wrote: Sun Dec 03, 2023 12:37 pm Interesting results Alfred !
Processing looks good.
Hi Christian,

Thank you for your feedback.

Alfred
by yltansg
Sat Dec 02, 2023 11:06 am
Forum: This is SolarChat !!
Topic: CAK Imaging with Re-spaced C6R refractor - 30 Nov 23 (New Images Added)
Replies: 24
Views: 884

Re: CAK Imaging with Re-spaced C6R refractor - 30 Nov 23 (New Images Added)

marktownley wrote: Sat Dec 02, 2023 8:55 am Nice additions Alfred, I don't think you're oversharpening.
Thanks, Mark for your feedback. Glad to know it is not over sharpened.

Alfred
by yltansg
Sat Dec 02, 2023 11:04 am
Forum: This is SolarChat !!
Topic: CAK Imaging with Re-spaced C6R refractor - 30 Nov 23 (New Images Added)
Replies: 24
Views: 884

Re: CAK Imaging with Re-spaced C6R refractor - 30 Nov 23 (New Images Added)

DeepSolar64 wrote: Sat Dec 02, 2023 6:07 am Looks good Alfred. I don't think they are over sharpened at all.
Thank you, James for your feedback. Glad to know that it is not oversharpened.

Alfred