Search found 2842 matches

by Valery
Sun Jul 15, 2018 6:11 pm
Forum: This is SolarChat !!
Topic: Solar granulation and Ha 15th July
Replies: 3
Views: 36

Re: Solar granulation and Ha 15th July

Very nice images taken into account such a seeing.

Better luck with a good seeing is what we all need first of all.


Valery
by Valery
Sun Jul 15, 2018 6:10 pm
Forum: This is SolarChat !!
Topic: Second Rotation for Active Region - AR12713 - 15th July
Replies: 6
Views: 55

Re: Second Rotation for Active Region - AR12713 - 15th July

Currently spotless and un-named as an active region, this bipolar patch of plage on the suns disk is the remains of active region which was heading towards the western limb of the sun on the 21st June. Then it had a number of sunspots and dark filaments associated with it, whereas now it is much qu...
by Valery
Sun Jul 15, 2018 4:56 pm
Forum: Solar Astronomy Shop and Swap
Topic: Wanted: 8" D-ERF filter
Replies: 1
Views: 18

Re: Wanted: 8" D-ERF filter

Personal mesage has been sent.
by Valery
Sun Jul 15, 2018 12:54 pm
Forum: This is SolarChat !!
Topic: 14th July Ha and CaK sun
Replies: 6
Views: 52

Re: 14th July Ha and CaK sun

I like the results. Hope you will have better seeing next time.


Valery
by Valery
Sun Jul 15, 2018 3:52 am
Forum: This is SolarChat !!
Topic: 13/07/18 Ha sun
Replies: 6
Views: 54

Re: 13/07/18 Ha sun

Nice prominences!

Thanks for sharing.

BTW. Show us your mod scope.


Valery
by Valery
Sun Jul 15, 2018 3:49 am
Forum: This is SolarChat !!
Topic: Some Bows and Belts and Other Things
Replies: 11
Views: 72

Re: Some Bows and Belts and Other Things

Lovely collection!


Valery
by Valery
Sat Jul 14, 2018 7:48 pm
Forum: Solar Astronomy Shop and Swap
Topic: H alpha filter for sale
Replies: 1
Views: 82

Re: H alpha filter for sale

Too little information to think about.
by Valery
Sat Jul 14, 2018 3:39 pm
Forum: This is SolarChat !!
Topic: AR from July 12
Replies: 7
Views: 111

Re: AR from July 12

Nice images, Peter

I think that the middle scale between the two shown will be the best compromise details/sharpness wise.


Valery
by Valery
Sat Jul 14, 2018 3:21 pm
Forum: This is SolarChat !!
Topic: The Blank Sun? 14th July
Replies: 6
Views: 75

Re: The Blank Sun? 14th July

The usual websites tell me the sun is blank, well that just depends what wavelength you're looking in. The active region mid disk has plenty going on, just no sunspots. Mark Excellent images, Mark Too bad you didn't make the image in the CaK line! CaK will be even more dramatic/impressive. Valery
by Valery
Thu Jul 12, 2018 11:07 pm
Forum: This is SolarChat !!
Topic: Quick peek at active region 7/12/18 with the 10" LX200
Replies: 8
Views: 96

Re: Quick peek at active region 7/12/18 with the 10" LX200

Hi Patrick

To cool the etalon, change the tuning knob position counterclockwise for 1, 2, 3 or even more clicks from the initial best position.

BTW I hope you don't mind, below is the image you sent me for my processing. It seems sharp enough due to a good seeing and good focusing.


Valery
by Valery
Thu Jul 12, 2018 6:49 pm
Forum: This is SolarChat !!
Topic: Very old, 2013, but a really fantastic solar looping.
Replies: 8
Views: 141

Re: Very old, 2013, but a really fantastic solar looping.

Hello Jean Pierre,

Really, really fantastic caprures of the solar loops! Despite my numerous cases with great prominences I was lucky with loop only once.
Need to find it.

BTW When will your new solar scope ready for imaging? We all missed your nice solar photos.


Valery
by Valery
Thu Jul 12, 2018 2:13 pm
Forum: This is SolarChat !!
Topic: Very old, 2013, but a really fantastic solar looping.
Replies: 8
Views: 141

Re: Very old, 2013, but a really fantastic solar looping.

Montana wrote:
Thu Jul 12, 2018 11:26 am
The Sun sure is beautiful :hamster:

Alexandra
Too bad there are no such impressive views within visible spectrum!


Valery
by Valery
Wed Jul 11, 2018 1:23 pm
Forum: This is SolarChat !!
Topic: Some July 9 images.
Replies: 6
Views: 132

Re: Some July 9 images.

Better and better, Peter!

Your setup works great and this is not it's limit.


Valery
by Valery
Wed Jul 11, 2018 1:21 pm
Forum: This is SolarChat !!
Topic: High resolution images of the granulation with the 300 mm solar scope : from red light to violet (G band)
Replies: 19
Views: 283

Re: High resolution images of the granulation with the 300 mm solar scope : from red light to violet (G band)

I think this is just outatnding raw data in the first place Valery Yes, I agree. But what is a miracle for me is that I have no problems with CaK data processing and Ha data. Not so easy with continuum data. So, I would like to understand how to process the continuum raw images maximally effectivel...
by Valery
Wed Jul 11, 2018 7:01 am
Forum: This is SolarChat !!
Topic: High resolution images of the granulation with the 300 mm solar scope : from red light to violet (G band)
Replies: 19
Views: 283

Re: High resolution images of the granulation with the 300 mm solar scope : from red light to violet (G band)

The processing for photopheric images is very simple. I just apply an unsharp mask (sigma = 1.4 pixel, k = 8). Nothing else. Hi Christian, Thanks for the tip. I will try it with my images. To understand how good can be the images for such a simple processing, can you, please, show us here the unsha...
by Valery
Tue Jul 10, 2018 1:55 pm
Forum: This is SolarChat !!
Topic: High resolution images of the granulation with the 300 mm solar scope : from red light to violet (G band)
Replies: 19
Views: 283

Re: High resolution images of the granulation with the 300 mm solar scope : from red light to violet (G band)

Hi Christian,

Your white light images are so noise-fee, unbelieveably noise-free. Do you use any special de-noising software?

I tried white ligth imaging many times include under a very good seeing. Tried de-noising in PS CS6, Topaz. Not even close to what your images are.

Thanks,


Valery
by Valery
Mon Jul 09, 2018 2:06 pm
Forum: This is SolarChat !!
Topic: High resolution images of the granulation with the 300 mm solar scope : from red light to violet (G band)
Replies: 19
Views: 283

Re: High resolution images of the granulation with the 300 mm solar scope : from red light to violet (G band)

Hi Christian,

I am very impressed with the G-band image. Other are quite nice too, but the G-band is something special.


Valery
by Valery
Sun Jul 08, 2018 2:35 pm
Forum: This is SolarChat !!
Topic: A small hope for a new spot.
Replies: 2
Views: 69

A small hope for a new spot.

See here at the eastern limb (middle left)

http://halpha.nso.edu/keep/hag/201807/2 ... 2930Ch.jpg



May be a small AR or even an AR with a spot.



Let hope for new activity. One can tarck the development here: http://halpha.nso.edu/





Valery
by Valery
Sat Jul 07, 2018 4:40 pm
Forum: This is SolarChat !!
Topic: Sun from 30th June and Noctilucent clouds
Replies: 17
Views: 225

Re: Sun from 30th June and Noctilucent clouds

Beautiful clouds and excellent DS full disk!


Valery
by Valery
Fri Jul 06, 2018 3:51 pm
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Can i use the Daystar Quantum 0,5 withe only Baader UV/IR?
Replies: 4
Views: 680

Re: Can i use the Daystar Quantum 0,5 withe only Baader UV/IR?

Not to contradict Valery, but I’ve used the Baader uv/ir cut filter as ERF for the Daystar QPE0.6A on a 100mm f12 (Istar objective) with no problems. Daystar has recommended the use of full sized ERF for objective diameters larger than 100mm. A front mounted ERF is the best solution, especially as ...
by Valery
Fri Jul 06, 2018 9:27 am
Forum: This is SolarChat !!
Topic: July 2 Proms
Replies: 7
Views: 145

Re: July 2 Proms

As it is, there is pretty significant vignetting (at the Daystar filter) when I use my 4.6x telecentric design and reduce to ~f#=25 but it can be successfully flat-fielded out. Cheers, Peter. Hi Peter, I believe this vignetting is due the Celestron telescope and the reducer, not the filter. Filter ...
by Valery
Thu Jul 05, 2018 2:14 am
Forum: This is SolarChat !!
Topic: It was not so long ago! AR12706 at a high res 280mm
Replies: 2
Views: 89

It was not so long ago! AR12706 at a high res 280mm

Hi here,

Yes, it was not so long ago. Only 75days back. This is AR12706 - a nice solar spot as seen through a 280mm aperture and a very narrow (about 0,2A) H-a etalon. Seeing was just average that nice April morning.

Thanks for looking.

Valery
by Valery
Thu Jul 05, 2018 1:39 am
Forum: This is SolarChat !!
Topic: High Res of the surface activity at the MINI-level with a Quark alternative.
Replies: 4
Views: 163

Re: High Res of the surface activity at the MINI-level with a Quark alternative.

Hi Valery. Your new filter is certainly capable of some superb imaging! These images look to have a bandpass of 0.4A or less and I don't think I can see any "print through" of the photospheric granulation (maybe a hint of it?). Are you developing this for the market? If so, hopefully you'd have the...
by Valery
Wed Jul 04, 2018 3:45 pm
Forum: This is SolarChat !!
Topic: High Res of the surface activity at the MINI-level with a Quark alternative.
Replies: 4
Views: 163

High Res of the surface activity at the MINI-level with a Quark alternative.

Hi here, These days with a quiet and almost bald sun I continue to test a new "eyepiece form" H-a filter (similar in size to a Quark) . This H-a filter allows to use virtually any telescope with F/7 and slower (F/10 is the optimum). For a bigger than 70mm size a full size DERF filter is required. Th...