Search found 2947 matches

by Valery
Thu Sep 20, 2018 8:39 pm
Forum: This is SolarChat !!
Topic: Sol in CaK from the 14th and in Ha from the 16th of September 2018.
Replies: 7
Views: 112

Re: Sol in CaK from the 14th and in Ha from the 16th of September 2018.

Eacellent set of pictuers, Eric. As always.

Looking for start of the high res with 10" scope!


Valery
by Valery
Thu Sep 20, 2018 8:34 pm
Forum: This is SolarChat !!
Topic: Sept 16th Sun and Yard Views
Replies: 8
Views: 66

Re: Sept 16th Sun and Yard Views

Fantastic nature and excellent sun pictures!

Thanks, Brian, for sharing them with us.


Valery
by Valery
Mon Sep 17, 2018 5:18 am
Forum: This is SolarChat !!
Topic: Chromosphere September 16th
Replies: 8
Views: 162

Re: Chromosphere September 16th

Small AR's are fine!

They looks even better with larger telescopes and not less impressive than large spots in small telescopes.


Valery
by Valery
Sun Sep 16, 2018 8:22 am
Forum: This is SolarChat !!
Topic: NEW 12672 large group!!! 280mm + ARIES 295mm DERF + QUARK GREAT SEEING!
Replies: 13
Views: 542

Re: NEW 12672 large group!!! 280mm + ARIES 295mm DERF + QUARK GREAT SEEING!

Thanks, Bart, Patrick and Mark


Here is the image of the same AR with better jet (surge) view.


Valery
by Valery
Sun Sep 16, 2018 6:19 am
Forum: This is SolarChat !!
Topic: New images of AR12671 GREAT SEEING!
Replies: 4
Views: 128

New images of AR12671 GREAT SEEING!

Hi to all, Bart have reminded me about August 20 2017. There was a time, not that the current boring days! Just look at splendid, big and active spots that sun showed us those days... Fantastic, absolutely fantastic! That morning was calm with moments of good seeing and I used my trusty C11 equipped...
by Valery
Thu Sep 13, 2018 3:45 am
Forum: Solar Astronomy Shop and Swap
Topic: Solar Scintallation Monitor
Replies: 1
Views: 116

Re: Solar Scintallation Monitor

Please, hold the SSM for me (if I am first).

E-mail sent.

Valery
by Valery
Tue Sep 11, 2018 3:12 pm
Forum: Solar Scope Modifications
Topic: Narrowest 393.37 ever by Apollo Lasky
Replies: 152
Views: 3930

Re: 393.4 bp0.1 - yes it does exist.

Sorry Valery, you are 100% wrong. I tried to be nice to you, I tried to show you how this works, I tried to explain how its never going to work without tilting the filter. Just go do your own thing and stay away. PLEASE QUIT TRYING TO INFLUENCE SOMETHING YOU HAVE NOTHING TO DO WITH. QUIT ARGUING WI...
by Valery
Tue Sep 11, 2018 2:24 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: 08Aug: Spectral sweep through the Ca K line
Replies: 13
Views: 476

Re: 08Aug: Spectral sweep through the Ca K line

Hi Everyone. Here is an animated spectral sweep through the Ca K line from data taken during my 08Aug imaging session. The wavelength offsets (in milliAngstroms) are marked in the upper left hand corner of each frame. The frame rate is rather slow this time. I used one second per frame (36 frames) ...
by Valery
Mon Sep 10, 2018 7:10 pm
Forum: Solar Scope Modifications
Topic: Narrowest 393.37 ever by Apollo Lasky
Replies: 152
Views: 3930

Re: 393.4 bp0.1 - yes it does exist.

1. One can't get narrower FWHM by shifting a second filter (with the same initial FWHM as in the first filter). The resulting FWHM will remains the same but transmission will significantly decrease. The more shift, the more tnansmission loss. 2. Bloking filter will not help as the problem is in the ...
by Valery
Mon Sep 10, 2018 5:51 am
Forum: Solar Scope Modifications
Topic: Narrowest 393.37 ever by Apollo Lasky
Replies: 152
Views: 3930

Re: 393.4 bp0.1 - yes it does exist.

Valery i just cannot comment on you anymore. You just do not understand how blocking out of band light works. I suggest you read the schematics for an entire h-alpha system, or read the patent on the blockers and trimmers used in daystar filters. This is my last comment. I am sorry, there is just n...
by Valery
Mon Sep 10, 2018 5:46 am
Forum: This is SolarChat !!
Topic: A few surface grabs from the weekend
Replies: 2
Views: 106

Re: A few surface grabs from the weekend

Images with smaller scope looks better due to optimal scale for this seeing. Your images with 10" have larger scale than my images with 11" scope. Sometime even 20% scale increasing (oversampling) makes a real difference in a poor side. So, try to stay with a bit smaller scale than optimal than to s...
by Valery
Mon Sep 10, 2018 2:10 am
Forum: Solar Scope Modifications
Topic: Narrowest 393.37 ever by Apollo Lasky
Replies: 152
Views: 3930

Re: 393.4 bp0.1 - yes it does exist.

This is is the actual carey spectrometer plot I originally got from chroma. Now here, represented without energy rejection, it is just pure reduction via Neutral density to bring it down to 20%. Where did the wings go? poof gone. The actual 393.4 energy rejection filter trim's the side band off eve...
by Valery
Mon Sep 10, 2018 1:38 am
Forum: This is SolarChat !!
Topic: 5th September Proms
Replies: 6
Views: 127

Re: 5th September Proms

Very nice image, Peter.

This scale is about the same as I use with my 8" and 11" SCT setups. F/25-30 is optimal for IMX174 sensor.


Valery
by Valery
Sun Sep 09, 2018 6:46 pm
Forum: This is SolarChat !!
Topic: Sun in K and CaH Sept. 5th & 6th
Replies: 14
Views: 266

Re: Sun in K and CaH Sept. 5th & 6th

Thanks Eric. In a rural location you should be able to enjoy a better seeing than mine as I live in a large city and only rarely I move my scopes. My larger instrument is a 210 mm Takahashi Mewlon. I live in a 400.000 city and my scope is at about 1.3m above ground level. I can meet good enough see...
by Valery
Sun Sep 09, 2018 6:37 pm
Forum: Solar Scope Modifications
Topic: Narrowest 393.37 ever by Apollo Lasky
Replies: 152
Views: 3930

Re: 393.4 bp0.1 - yes it does exist.

I know well one thing: if it will not work for Bob, it will not work for anybody else.
by Valery
Sun Sep 09, 2018 11:26 am
Forum: Solar Scope Modifications
Topic: Narrowest 393.37 ever by Apollo Lasky
Replies: 152
Views: 3930

Re: 393.4 bp0.1 - yes it does exist.

but I can give you some insane prominence images from my $25.00 standard meade 90mm x 800mm achromat with a plastic focuser. (it does have a kg3 filter mounted on the last baffle) in fact I am getting such great performance with my chroma filter 2-3 images worth or millions words. So, give us these...
by Valery
Sun Sep 09, 2018 11:14 am
Forum: This is SolarChat !!
Topic: Sun in K and CaH Sept. 5th & 6th
Replies: 14
Views: 266

Re: Sun in K and CaH Sept. 5th & 6th

Thanks Alexandra, Mark, Robert. @Robert: at my location seeing is good for imaging granulation in K line until about 2 hours from sunrise then quickly deteriorates and only H alpha or continuum imaging is possible. In summer the sky is also slightly hazy and this makes images noisy if the Sun is no...
by Valery
Fri Sep 07, 2018 1:19 pm
Forum: This is SolarChat !!
Topic: Sun in K and CaH Sept. 5th & 6th
Replies: 14
Views: 266

Re: Sun in K and CaH Sept. 5th & 6th

Thanks Franco and Stu, this spotless Sun is really boring, I think I'll stop imaging granulation and calcium features for some time now :lol: This is true for for images taken with small telescopes and respectively at small scales. With 8" and up telescopes images at 393nm (contimuum) and especiall...
by Valery
Wed Sep 05, 2018 3:54 pm
Forum: This is SolarChat !!
Topic: Today's SUN (20180831) | 6 different scopes
Replies: 6
Views: 260

Re: Today's SUN (20180831) | 6 different scopes

How man more solar telescopes do you have, Pedro? I will not be surprised if total will be 10 or more. :)

The image with a PST etalon is fantastic.


Valery
by Valery
Wed Sep 05, 2018 1:53 am
Forum: This is SolarChat !!
Topic: Changing the f number or not.
Replies: 4
Views: 226

Re: Changing the f number or not.

better to change the F/N for a slower one.
by Valery
Wed Sep 05, 2018 1:43 am
Forum: This is SolarChat !!
Topic: Today's SUN (20180829) | PST Stage 2 Mod first light
Replies: 8
Views: 278

Re: Today's SUN (20180829) | PST Stage 2 Mod first light

Congrats with the first light!
by Valery
Wed Sep 05, 2018 1:37 am
Forum: This is SolarChat !!
Topic: New equipment and playing!
Replies: 8
Views: 256

Re: New equipment and playing!

Good start, Gordon!
by Valery
Wed Sep 05, 2018 1:35 am
Forum: This is SolarChat !!
Topic: SolarMax 60 II vs, Daystar SS60-DS
Replies: 4
Views: 210

Re: SolarMax 60 II vs, Daystar SS60-DS

I'd go with Coronado!