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Transit of Mercury in the Spicule Layer. Phil took this great image with his Quantum 6 Scope, Solar Spectrum etalon and PGR Camera.

Welcome to Solar Chat! The best forum for Solar Astronomy
Moving forward from solar cycle 24 to 25

Search found 3342 matches

by Valery
Sun Apr 06, 2014 3:44 am
Forum: This is SolarChat !!
Topic: Lunt CaK module FWHM ?
Replies: 7
Views: 271

Re: Lunt CaK module FWHM ?

This might help: http://www.stephenramsden.com/solarastrophotography/Observing%20in%20Ca%20II%20K.pdf Thank you, Joe. I already read this nice article. However the only indication about band wide I was able to find there is that PST CaK has 2,2A FWHM. However I need to know the FWHM and transmissio...
by Valery
Sun Apr 06, 2014 12:04 am
Forum: This is SolarChat !!
Topic: Lunt CaK module FWHM ?
Replies: 7
Views: 271

Lunt CaK module FWHM ?

Does anybody know what is the FWHM and transmission % of the Launt CaK modules?

Thanks,

Valery.
by Valery
Sat Apr 05, 2014 6:25 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Lunt CaK module bandwide?
Replies: 55
Views: 3971

Lunt CaK module bandwide?

Does anybody know what is the FWHM and transmission % of the Launt CaK modules?

Thanks,

Valery.
by Valery
Sat Apr 05, 2014 11:03 am
Forum: This is SolarChat !!
Topic: High resolution photos April 3, 2014. 150mm scope.
Replies: 14
Views: 824

Re: High resolution photos April 3, 2014. 150mm scope.

Great detail in these images Valery. I can find no information of your setup or your Aries solar kit. Could you share some details. This is a lit of optics (5 lenses, two parts of mechanics) which transforms any of three SkyWarcher telescopes 100mm F/5, 120mm F/5 or 150mm F/5 in to a solar H-a tele...
by Valery
Sat Apr 05, 2014 8:16 am
Forum: This is SolarChat !!
Topic: Daystar: QUARK the first Hydrogen Alpha "Eyepiece" ?
Replies: 78
Views: 6728

Re: Daystar: QUARK the first Hydrogen Alpha "Eyepiece" ?

Valery, As Mark requested earlier....do you have any photos of your set-up and details of your "ARIES" arrangement?? Before I will be ready to offer my kits for purchase I will not show any photos of the setup. The delay was due to improvement of the safety of the kits. I was promised that the coat...
by Valery
Fri Apr 04, 2014 9:01 pm
Forum: This is SolarChat !!
Topic: Daystar: QUARK the first Hydrogen Alpha "Eyepiece" ?
Replies: 78
Views: 6728

Re: Daystar: QUARK the first Hydrogen Alpha "Eyepiece" ?

Stephen, I am sure that Quark will hit the "market" of all possible PST mods. Really, it costs a bit more, but offer much larger blocker -12mm, etalon is of the same size - 20mm, but Quark etalon possibly is a temperature tuning (need to be confirmed) device - results no banding and much more even f...
by Valery
Fri Apr 04, 2014 12:07 pm
Forum: This is SolarChat !!
Topic: Daystar: QUARK the first Hydrogen Alpha "Eyepiece" ?
Replies: 78
Views: 6728

Re: Daystar: QUARK the first Hydrogen Alpha "Eyepiece" ?

In general, I think that all these PST mods have inspired DayStar to develop this Quark system.

I expect a noticeable prices drop for most of narrow band filters stuff.


Valery.
by Valery
Fri Apr 04, 2014 11:45 am
Forum: This is SolarChat !!
Topic: Daystar: QUARK the first Hydrogen Alpha "Eyepiece" ?
Replies: 78
Views: 6728

Re: Daystar: QUARK the first Hydrogen Alpha "Eyepiece" ?

Very important question.

From the DayStar webpage QUARK description: "Tuning knob allows wing shifting +/- 0.5Å with detents at every 0.1Å "

Is this tuning works by the etalon temperature change or just by the tilt of the etalon?


Regards,

Valery
by Valery
Fri Apr 04, 2014 11:13 am
Forum: This is SolarChat !!
Topic: Today's White Light Solar Images - 04 April
Replies: 13
Views: 257

Re: Today's White Light Solar Images - 04 March

Very nice, George!

BTW, Change the name of the thread. It is April 4, not March 4! :)
by Valery
Thu Apr 03, 2014 6:35 pm
Forum: This is SolarChat !!
Topic: High resolution photos April 3, 2014. 150mm scope.
Replies: 14
Views: 824

High resolution photos April 3, 2014. 150mm scope.

Today I managed to take some high resolution photos of the active regions on the Sun.
SW150/750 + Aries solar kit + LS50F Ha + Flea3 camera.

600 frames out of 1300. Seeing 3-4 out of 5.

Thanks for looking.

Valery.
by Valery
Wed Apr 02, 2014 4:47 am
Forum: This is SolarChat !!
Topic: Daystar: QUARK the first Hydrogen Alpha "Eyepiece" ?
Replies: 78
Views: 6728

Re: Daystar: QUARK the first Hydrogen Alpha "Eyepiece" ?

This is all possible. I believe, that this is the answer for all these PST mods. It is easy to make a powerful tele centric Barlow and small Ha filter in one package.
If this a real device, then I predict the prices fall off for all these DS II modules, small front etalons etc.
by Valery
Mon Mar 31, 2014 12:10 am
Forum: This is SolarChat !!
Topic: March 26th Ha Session
Replies: 14
Views: 503

Re: March 26th Ha Session

Brian, what is the aperture of your 150mm scope now? As I understand it now limited by ERF filter size?

Valery.
by Valery
Sun Mar 30, 2014 6:45 am
Forum: This is SolarChat !!
Topic: Large sun spot. 150mm scope.
Replies: 10
Views: 421

Large sun spot. 150mm scope.

Here is a large group of the sun spots. Photo was taken March 24 2014 at 9h 03m UT through a SW150mm F/5 refractor equipped with Aries solar kit, LS50F etalon (B1200) and Flea3 1,3Mpz GigE mono camera. Here is a full size: http://www.astronomy.ru/forum/index.php?action=media;sa=media;in=5234 Thanks ...
by Valery
Sun Mar 30, 2014 6:15 am
Forum: This is SolarChat !!
Topic: Two photos of the same group 0.7A and 0.5A. 150mm scope.
Replies: 12
Views: 714

Re: Two photos of the same group 0.7A and 0.5A. 150mm scope.

Valery, beautiful details! Just a Photoshop suggestion, with such detail in the umbra in the .7 image, try masking in the umbra details from the .7 into the .5. This will get the best detail from both images. just a suggestion to make gorgeous images even better. Joe, I am not familiar with all the...
by Valery
Sat Mar 29, 2014 12:55 pm
Forum: This is SolarChat !!
Topic: Nice prominence March 24 through 150mm scope.
Replies: 10
Views: 866

Nice prominence March 24 through 150mm scope.

Nice prominence on a Suoth-East solor limb. March 24 2014 at 10-00 UT

SW150/750 + Aries solar kit + LS50F + PGR Flea3 mono.

Thanks for looking.

Valery.
by Valery
Sat Mar 29, 2014 11:20 am
Forum: This is SolarChat !!
Topic: Two photos of the same group 0.7A and 0.5A. 150mm scope.
Replies: 12
Views: 714

Re: Two photos of the same group 0.7A and 0.5A. 150mm scope.

marktownley wrote:An excellent pair of comparison images valery, always a pleasure to see your shots. Definitely remove the pre filters on these etalons, what ERF do you use - front end full aperture or a sub aperture ERF in the tube?
Thaks Mark, I do use subaperture D-ERF applied on the front collimation lens.
by Valery
Sat Mar 29, 2014 6:49 am
Forum: This is SolarChat !!
Topic: Two photos of the same group 0.7A and 0.5A. 150mm scope.
Replies: 12
Views: 714

Two photos of the same group 0.7A and 0.5A. 150mm scope.

March 24 I decided to compare how the solar surface will be seen through the same 150mm telescope equipped with single stack 0,7A and double stack 0,5A. Here are two these photos. 0,7A ones looks consisted more fine details, while 0,5A looks more relief defined. Two reasons 0,7A has finer details: t...
by Valery
Wed Mar 26, 2014 5:14 am
Forum: Solar Scope Modifications
Topic: Quick Question - Blocking Filters
Replies: 15
Views: 2058

Re: Quick Question - Blocking Filters

This blocking filter would not work well at all with the Coronado etalon . It was impossible to get anything close to even lighting or bring up the contrast or detail , no matter what I tried the image was always blown out with a bright area . I also tried the b 1800 in my SM 60 II DS , i have a 2'...
by Valery
Tue Mar 25, 2014 5:55 pm
Forum: Solar Scope Modifications
Topic: Lunt Double Stack on the CR-150...comments please
Replies: 22
Views: 2303

Re: Lunt Double Stack on the CR-150...comments please

Hi Mark and Pablito... Just a quick follow-up on your questions: The camera is my standard PGR Grasshopper Express with the ICX674 chip (on the larger side). I could have cropped or used a sub-frame, but kept the full FOV for perspective. Etalon rotation is limited...primary etalon by the threads w...
by Valery
Sun Mar 23, 2014 5:33 pm
Forum: This is SolarChat !!
Topic: West limb of the sun March 22. 150mm Ha scope
Replies: 4
Views: 135

Re: West limb of the sun March 22. 150mm Ha scope

And here is a b/w version.
by Valery
Sun Mar 23, 2014 5:01 pm
Forum: This is SolarChat !!
Topic: West limb of the sun March 22. 150mm Ha scope
Replies: 4
Views: 135

West limb of the sun March 22. 150mm Ha scope

This photo was taken March 22, 2014. 9h 53m UT with SW150/750mm + Aries solar kit + LS50F Ha + PGR Flea3 mono camera.

Click on the picture to see uncompressed image.

Thanks for looking.

Valery.
by Valery
Sun Mar 23, 2014 3:39 pm
Forum: This is SolarChat !!
Topic: March 22, 2014 Flare structure. 150mm telescope
Replies: 12
Views: 506

March 22, 2014 Flare structure. 150mm telescope

March 22, 2014 Flare structure. SW150/750mm + Aries solar kit + LS50F Ha + PGR Flea3 mono camera.

Thanks for looking.

Valery.
by Valery
Fri Mar 21, 2014 9:25 pm
Forum: Solar Scope Modifications
Topic: Reducing Spherical Aberration In Our Scope Mods
Replies: 45
Views: 5001

Re: Reducing Spherical Aberration In Our Scope Mods

I still would like to know more about the d/D rule. It's certainly something i've found from an imaging perspective in terms of what is a usable field before the bandpass at the field edges starts to get wider and blue shift... Also, see the the PDF attached on the Edmunds spherical aberration corr...