Search found 559 matches

by GreatAttractor
Sun Jan 28, 2018 9:58 am
Forum: This is SolarChat !!
Topic: ImPPG installation
Replies: 3
Views: 199

Re: ImPPG installation

Sorry about that, I should probably add a comment there saying you need to click specifically on imppg-win64.zip . As for tutorials, check the "Useful links" section on http://greatattractor.github.io/imppg/. Also, the video tutorial for Stackistry shows some quick-and-dirty processing with ImPPG at...
by GreatAttractor
Sat Dec 30, 2017 10:15 am
Forum: Solar Scope Modifications
Topic: DIY Solar Scintillation Seeing Monitor with FC support
Replies: 113
Views: 9959

Re: DIY Solar Scintillation Seeing Monitor with FC support

I like your results! Good correlation with the quality graph, so the device is working fine. So a SSM is a nice addition but so far not a big help for planning ... It seems to me that (apart from being a fun project) it's mainly useful for big-aperture people to trigger video recording during short ...
by GreatAttractor
Fri Dec 22, 2017 9:19 am
Forum: Solar Scope Modifications
Topic: DIY Solar Scintillation Seeing Monitor with FC support
Replies: 113
Views: 9959

Re: DIY Solar Scintillation Seeing Monitor with FC support

Is it possible that with clouds the scintillation of the sun is less ? I sometimes get high, thin clouds that don't interfere much with recording (judging visually by the raw video and by successful stacking). However, I'd think SSM output through the clouds is meaningless, as the brightness change...
by GreatAttractor
Fri Dec 15, 2017 8:51 pm
Forum: Solar Scope Modifications
Topic: DIY Solar Scintillation Seeing Monitor with FC support
Replies: 113
Views: 9959

Re: DIY Solar Scintillation Seeing Monitor with FC support

As long as you don't use any optics in front of the naked diode, I think recessing won't make a difference. The Sun is thousands of times brighter than any other light source you'll encounter on a typical day, so no "background light shielding" should be needed.
by GreatAttractor
Fri Dec 15, 2017 3:26 pm
Forum: Solar Scope Modifications
Topic: DIY Solar Scintillation Seeing Monitor with FC support
Replies: 113
Views: 9959

Re: DIY Solar Scintillation Seeing Monitor with FC support

Now if I understood correctly that menas that if I have a metal case for the detector then I should not ground it to that metal case ? Right, that's my understanding too. I think I can use them for my ongoing project of the Solar guider I am building. That's cool! Also keep an eye on the Planetary ...
by GreatAttractor
Thu Dec 14, 2017 8:59 pm
Forum: Solar Scope Modifications
Topic: DIY Solar Scintillation Seeing Monitor with FC support
Replies: 113
Views: 9959

Re: DIY Solar Scintillation Seeing Monitor with FC support

It seems clear to me: "not grounded at detector" = "don't try to attach the outer mesh at the detector to an external ground".
by GreatAttractor
Thu Dec 14, 2017 8:57 pm
Forum: This is SolarChat !!
Topic: First try at a big mosaic and an animation
Replies: 15
Views: 544

Re: First try at a big mosaic and an animation

Very good results, I especially like the animation.

Just a small observation, the prominences in the animation seem abruptly clipped. I suggest letting the lower end of the histogram blend smoothly to black.
by GreatAttractor
Sat Dec 09, 2017 10:19 am
Forum: This is SolarChat !!
Topic: just big anim prom 5 december 5h15/ 355pictures
Replies: 12
Views: 400

Re: just big anim prom 5 december 5h15/ 355pictures

Excellent! Especially the spicules, well-defined most of the time. Some great conditions you had there.
by GreatAttractor
Thu Oct 12, 2017 5:23 pm
Forum: Solar Scope Modifications
Topic: Show me your lunt solar mods
Replies: 9
Views: 690

Re: Show me your lunt solar mods

Here's mine, works very well: viewtopic.php?f=9&t=19238
Most of my solar images since then have been captured with this setup.
by GreatAttractor
Sat Sep 30, 2017 8:06 am
Forum: This is SolarChat !!
Topic: 250mm Aries ERF on RCT/DS Lunt 35
Replies: 23
Views: 901

Re: 250mm Aries ERF on RCT/DS Lunt 35

I love the look of this setup, Stu. And how you keep pushing those LS35s to the extreme.
by GreatAttractor
Fri Sep 29, 2017 7:11 pm
Forum: This is SolarChat !!
Topic: Raw images - a technical question
Replies: 8
Views: 364

Re: Raw images - a technical question

Hi Bruce, I'm glad you like it. The program recommends the number of iterations between 30 and 70 Or rather, I put that recommendation in judging by my own images. Alexandra favors higher values, so I guess it depends on the setup and the raw material it produces. Keep experimenting until you're sat...
by GreatAttractor
Mon Sep 25, 2017 4:57 pm
Forum: This is SolarChat !!
Topic: AR12674 & AR12677 with 280mm scope and QUARK.
Replies: 15
Views: 597

Re: AR12674 & AR12677 with 280mm scope and QUARK.

Excellent captures, Valery, as usual.
by GreatAttractor
Thu Sep 14, 2017 6:18 pm
Forum: This is SolarChat !!
Topic: AR12680 short animation
Replies: 12
Views: 494

Re: AR12680 short animation

Looks great! Like a (big...) lit match.
by GreatAttractor
Wed Sep 13, 2017 8:21 am
Forum: This is SolarChat !!
Topic: Post X8-flare prominence animation
Replies: 11
Views: 491

Re: Post X8-flare prominence animation

These loops were really fantastic, great capture.
by GreatAttractor
Thu Sep 07, 2017 1:29 pm
Forum: This is SolarChat !!
Topic: High resolution animation
Replies: 7
Views: 425

Re: High resolution animation

Wonderful animations, especially the first. I love those boiling ARs on the limb.
by GreatAttractor
Thu Sep 07, 2017 1:26 pm
Forum: This is SolarChat !!
Topic: 6th Sept AR2673 just after the X class flare, blink of loops added
Replies: 12
Views: 521

Re: 6th Sept AR2673 just after the X class flare, blink of loops added

What a catch! Imagine how it must have looked from a grazing angle, like a rib cage of a hundred-thousand-km space whale...
by GreatAttractor
Wed Sep 06, 2017 7:55 am
Forum: This is SolarChat !!
Topic: Newbie viewing question
Replies: 4
Views: 245

Re: Newbie viewing question

I have the Baader Maxbright binoviewer + a pair of Ploessls, and indeed the difference w.r.t. one-eyed view is very noticeable (more comfortable, details more easily visible); highly recommended if you're into visual observing.
by GreatAttractor
Sun Sep 03, 2017 5:05 pm
Forum: Solar Scope Modifications
Topic: DIY Solar Scintillation Seeing Monitor with FC support
Replies: 113
Views: 9959

Re: DIY Solar Scintillation Seeing Monitor with FC support

Finally! Two nice cloudless days, and I could at last verify the values reported by SSM. After attaching the sensor so it would follow the Sun: moco1.jpg moco2.jpg moco3.jpg i started data collection, and captured a 50-second video at 20 fps. It would seem the SSM works correctly, because on a joint...
by GreatAttractor
Sun Aug 20, 2017 6:19 pm
Forum: Solar Scope Modifications
Topic: DIY Solar Scintillation Seeing Monitor with FC support
Replies: 113
Views: 9959

Re: DIY Solar Scintillation Seeing Monitor with FC support

As was to be expected, I haven't had imaging opportunities since finishing version 1 of my SSM :evil: In the meantime, I bought a 1.3" mono OLED display and learned to use it; also, version 2 of the board is almost built, and new Arduino code is ready. Not that having a seeing graph is particularly ...
by GreatAttractor
Sun Aug 20, 2017 10:14 am
Forum: This is SolarChat !!
Topic: AR2671 August 19/2017 GREAT SEEING! C11 280mm + ARIES DERF + QUARK
Replies: 7
Views: 347

Re: AR2671 August 19/2017 GREAT SEEING! C11 280mm + ARIES DERF + QUARK

Wonderful shot,Valery.

It would be interesting to see SSM data taken during those high-resolution captures.
by GreatAttractor
Sun Aug 20, 2017 8:57 am
Forum: This is SolarChat !!
Topic: Gain Recommendation for ZWO 174mm
Replies: 15
Views: 710

Re: Gain Recommendation for ZWO 174mm

For Gamma setting: i would only use NEUTRAl (linear) gamma. If not the captured signal will be crippled. Correction can and should be done in post processing. As for "crippling", this depends on the target. For prominences, I indeed use only neutral gamma. But for surface-only videos I turn the gam...
by GreatAttractor
Sat Aug 19, 2017 12:55 pm
Forum: This is SolarChat !!
Topic: 18 August prom animation
Replies: 3
Views: 197

Re: 18 August prom animation

Great catch! I took 14 images every 5 minutes. It was a real pain to stack everything together With a few tricks it shouldn't be. Most stackers have batch mode (AS!3 - just select all videos, drag and drop them on program window; in AviStack2, Stackistry, select and open multiple files). Then I sugg...
by GreatAttractor
Thu Aug 10, 2017 9:18 am
Forum: This is SolarChat !!
Topic: New here / AR12670 whitelight using EdgeHD11
Replies: 14
Views: 590

Re: New here / AR12670 whitelight using EdgeHD11

That's a cracking image, Laura! Everything is nicely resolved. Though I would show some more of umbral details, there should be something to see, like e.g. in http://astrob.in/22917/0/, http://astrob.in/23205/D/; that is, if they weren't clipped during recording. You might be interested in Piotr's a...
by GreatAttractor
Thu Jul 27, 2017 9:07 am
Forum: Commercial Solar Filters/Cameras/Hardware
Topic: Realtime Seeing Filter idea - to benefit Altair GPCAM / Hypercam owners and others
Replies: 6
Views: 449

Re: Realtime Seeing Filter idea - to benefit Altair GPCAM / Hypercam owners and others

Joe, yes I did. At least the quality analysis phase would be straightforward (it's just an iterated box blur filter and subtraction). Though I'd rather use GLSL (OpenGL shaders) which is widely supported. There's no OpenCL support yet in Radeon open source drivers on Linux (that's what I use).