Search found 58 matches

by Bruce G
Thu Mar 14, 2019 5:56 pm
Forum: This is SolarChat !!
Topic: GAMMA SETTINGS QUESTION
Replies: 10
Views: 294

Re: GAMMA SETTINGS QUESTION

The FLIR KB note makes some good points "Thus, using the minimal amount of gain that will still allow the A/D to saturate will help maximize the camera's dynamic range." This is the point that Valery was making. You want to use that whole histogram. BUT, once data values are clipped, they are perman...
by Bruce G
Mon Mar 11, 2019 10:30 pm
Forum: This is SolarChat !!
Topic: A Grand Post-Processing Thread!
Replies: 9
Views: 212

Re: A Grand Post-Processing Thread!

Bruce, it is my understanding that for (our) solar imaging, when sharpening a stack, we need to remove the blurriness caused by 1) atmospheric turbulence (even though the stacker tries to choose the sharpest image fragments, it has to use some blurrier ones too), and 2) shift-and-add procedure (whi...
by Bruce G
Mon Mar 11, 2019 6:26 pm
Forum: This is SolarChat !!
Topic: A Grand Post-Processing Thread!
Replies: 9
Views: 212

Re: A Grand Post-Processing Thread!

I struggle with deconvolution too, not because I don't understand what convolution is and does, but because we are handed a pile of deconvolution kernels with no guidance as to which sort of situations they were built for. Deconvolution is an inherently unstable process. It is a process of division....
by Bruce G
Wed Dec 26, 2018 11:20 pm
Forum: This is SolarChat !!
Topic: Christmas Prominence
Replies: 11
Views: 400

Re: Christmas Prominence

Yay!
by Bruce G
Sun Dec 09, 2018 10:30 pm
Forum: This is SolarChat !!
Topic: Something brewing Dec 9th
Replies: 9
Views: 422

Re: Something brewing Dec 9th

I saw it as well when we had a tiny opening in the cloud deck. Quite bright, but still very small. Indeed it did remind me of the beginnings of that big loop, one that I was fortunate enough to see nearly the full development of. Perhaps Derek might catch something for us in the morning
by Bruce G
Wed Dec 05, 2018 3:00 pm
Forum: This is SolarChat !!
Topic: 5th December clear sky
Replies: 9
Views: 496

Re: 5th December clear sky

Wow! Where did that AR come from?
I may have some clear sky, for the first time in ages, coming up in a couple of days. I hope to be able to catch this beauty
Nice work
by Bruce G
Tue Dec 04, 2018 6:12 pm
Forum: This is SolarChat !!
Topic: Moontrek Interactive Map
Replies: 6
Views: 431

Re: Moontrek Interactive Map

Like I needed another way to spend my spare time!
Wow, there's a lot there
by Bruce G
Thu Nov 29, 2018 1:56 am
Forum: This is SolarChat !!
Topic: Citizen Science
Replies: 24
Views: 1459

Re: Citizen Science

Awesome images.
Feeling rather humbled at the moment
by Bruce G
Tue Nov 20, 2018 2:19 am
Forum: This is SolarChat !!
Topic: Hawk Repurposed My Solar Scope
Replies: 9
Views: 539

Re: Hawk Repurposed My Solar Scope

Beautiful!
by Bruce G
Thu Oct 25, 2018 11:30 pm
Forum: This is SolarChat !!
Topic: Impact of telescope height on the seeing
Replies: 18
Views: 1110

Re: Impact of telescope height on the seeing

Those interested in this topic may wish to check out the following document: THE EFFECT OF THE LOCAL ATMOSPHERIC ENVIRONMENT ON ASTRONOMICAL OBSERVATIONS http://www.eso.org/gen-fac/pubs/astclim/papers/lz-thesis/node1.html In particular, note the following page Surface layer seeing http://www.eso.org...
by Bruce G
Sat Oct 13, 2018 4:51 pm
Forum: This is SolarChat !!
Topic: Impact of telescope height on the seeing
Replies: 18
Views: 1110

Re: Impact of telescope height on the seeing

Thank you Christian
I look forward to seeing further results

Bruce G
by Bruce G
Tue Oct 09, 2018 2:01 pm
Forum: This is SolarChat !!
Topic: Impact of telescope height on the seeing
Replies: 18
Views: 1110

Re: Impact of telescope height on the seeing

What SSMs were used in these tests, should someone want to replicate your results?
by Bruce G
Wed Oct 03, 2018 6:50 pm
Forum: This is SolarChat !!
Topic: Impact of telescope height on the seeing
Replies: 18
Views: 1110

Re: Impact of telescope height on the seeing

Very interesting results and very well presented.

What do you feel might explain that much difference? Dust in the air layer just above the ground or perhaps some other form of scattering phenomenon? Thermal currents close to the ground?

Bruce G
by Bruce G
Wed Oct 03, 2018 6:39 pm
Forum: This is SolarChat !!
Topic: Sol from the 29th of Septamber 2018.
Replies: 10
Views: 463

Re: Sol from the 29th of Septamber 2018.

Beautiful hedgerow
by Bruce G
Sun Sep 30, 2018 5:50 pm
Forum: This is SolarChat !!
Topic: Maybe the wrong place
Replies: 6
Views: 464

Re: Maybe the wrong place

There are also those quick car jump power sources that hold enough juice to jump start a car. Way more than needed for a Quark, but if you're driving a tracking mount, a camera with cooler, a computer and perhaps a convenience item here or there, they'll cover all that and more. Small and light, the...
by Bruce G
Fri Sep 21, 2018 8:38 pm
Forum: SPoD Archive
Topic: Exploding arch prom from 9/19
Replies: 12
Views: 587

Re: Exploding arch prom from 9/19

Wow! Incredible!
Great job
by Bruce G
Fri Sep 21, 2018 8:38 pm
Forum: This is SolarChat !!
Topic: Exploding arch prom from 9/19
Replies: 16
Views: 866

Re: Exploding arch prom from 9/19

Wow! Incredible!
Great job
by Bruce G
Tue Sep 18, 2018 12:29 am
Forum: This is SolarChat !!
Topic: Prominence Hedgerow Animation
Replies: 12
Views: 750

Re: Prominence Hedgerow Animation

Awesome view
Great job!
How many frames are in that hour?

Bruce G
by Bruce G
Thu Sep 13, 2018 11:48 pm
Forum: This is SolarChat !!
Topic: Nice hedgerow today
Replies: 5
Views: 360

Nice hedgerow today

Despite clear skies, it has been an effort to get anything worth posting lately. Today offered a nice target for imaging.

Lunt LS80THa single stack
5x Powermate
ZWO ASI174MM

12_26_10 Hedgerow2.jpg
12_26_10 Hedgerow2.jpg (316.94 KiB) Viewed 358 times


Another view

Lunt LS80THa single stack
2.5x Powermate
ZWO ASI174MM

14_17_07 Hedgerow2.jpg
14_17_07 Hedgerow2.jpg (2.08 MiB) Viewed 349 times
by Bruce G
Sat Sep 01, 2018 8:10 pm
Forum: This is SolarChat !!
Topic: Granulation shots (TEC140 F/7, X4 & X5 Powermates)
Replies: 16
Views: 777

Re: Granulation shots (TEC140 F/7, X4 & X5 Powermates)

That is so great to see Pedro.
Not only are they great shots, but I just picked up a TEC APO140 myself and now I have an idea of what I might see (I haven't been able to set it up yet). You have me really anxious to use it now.
by Bruce G
Thu Aug 30, 2018 7:21 pm
Forum: This is SolarChat !!
Topic: New camera but which one?
Replies: 32
Views: 1393

Re: New camera but which one?

Yes the ASI120 is famous for Newton Rings, but a tilt adapter will do. You probably will need a lot of tilt. (At least I do have with mine, still surprised the complete field of view is still sharp) That took me a while to grasp as well, but think of it in photographic terms. What would the depth o...
by Bruce G
Tue Aug 28, 2018 5:06 pm
Forum: This is SolarChat !!
Topic: New camera but which one?
Replies: 32
Views: 1393

Re: New camera but which one?

Yes. If you are still at the point where you're not getting a usable image with what you already have, then you should hold off buying anything new until that is sorted out. I'm sure if we could all stand together in one spot with your gear we could have it solved in a few minutes but alas, we'll ha...
by Bruce G
Tue Aug 28, 2018 4:06 pm
Forum: Solar Software
Topic: Running FireCapture on a Mac
Replies: 3
Views: 672

Re: Running FireCapture on a Mac

Sorry it took me so long to get to around to this. It has been a busy few weeks. If anyone has corrections or further information regarding this procedure, please post. I will incorporate what I can into the procedure. After that, the thread should be archived and these comments can be cut. Incident...