Hi, do you mean - just the histogram (which is displayed in the background of the tone curve window), or the whole tone curve window? Could you post a screenshot? Keep in mind that the histogram is calculated just for the selected processing area. E.g., if you select a piece of dark sky beside the s...

Fantastic shots. I really need to try my 250 mm Newtonian this season, even if it's with ND 5 and some wider filter. The Mewlon 250 is not the instrument that one thinks of spontaneously for solar observation. Another example that comes to mind is Tal 250K ( sample WL shot by Dzmitry ), a Klevtsov-C...

mrcvaccari wrote: ↑Fri Jun 02, 2023 10:36 pm 240mm astrosolar 3.8

Hold on to and keep good care of it, because no one knows when ND 3.8 in sizes >20 cm is coming back, if ever.

Beautiful animation. Was it something like a 11" or 14" aperture telescope?

I personally believe that the children were mainly helped by being outside and not staring at monitors and mobile phones, which are the main cause of poor eyesight. I can't find the link now, but I read an article which indicated that computer/phone use doesn't seem to matter. IIRC, they compared m...

Thank you, everyone. I'm attaching a raw stack of the first image, if anyone wants to give it a try - feel free to post your results: sc2_00074_AS_P5_lapl4_ap2819.tif My ImPPG settings (requires ImPPG 1.9.1-beta): sc2_nonorm.xml I was wondering if you could slow it down a little bit, so that we can ...

I'm guessing "Chief" = Schiefspiegler, tilted-component no-obstruction telescope? F/9 probably means an additional lens corrector, is that right?

The seeing yesterday was not too great for 180 mm aperture, but I recorded >200 videos and got some good stacks, and even a usable animation. Taken with Intes M715 with Blackfly S (IMX 273) camera, Baader ND 3.8 solar film + Solar Continuum (10 nm) filter, stacked in AS!3 and processed with ImPPG. f...

The seeing yesterday was not too great for 180 mm aperture, but I recorded >200 videos and got some good stacks, and even a usable animation. Taken with Intes M715 with Blackfly S (IMX 273) camera, Baader ND 3.8 solar film + Solar Continuum (10 nm) filter, stacked in AS!3 and processed with ImPPG. f...

Solarchat doesn't support embedding MP4 videos directly, you can only provide a link. On Stargazerslounge you can attach a video to a message and it will show in a player. On Cloudy Nights you can upload MP4s to your Photo Gallery and link to them in a post (the user is then redirected to the galler...

Solarchat doesn't support embedding MP4 videos directly, you can only provide a link. On Stargazerslounge you can attach a video to a message and it will show in a player. On Cloudy Nights you can upload MP4s to your Photo Gallery and link to them in a post (the user is then redirected to the galler...

That's a spectacular catch. Sorry, I can't get good image quality in Mp4 with my software. I've just converted your 120 MB GIF to a 14 MB MP4 video with the free tool FFMPEG using these parameters: ffmpeg -r 15 -i 2023-05-27-12h08mn4--TU.gif -vf "crop=1416:1088:0:0" -vcodec h264 -pix_fmt y...

That's a spectacular catch. Sorry, I can't get good image quality in Mp4 with my software. I've just converted your 120 MB GIF to a 14 MB MP4 video with the free tool FFMPEG using these parameters: ffmpeg -r 15 -i 2023-05-27-12h08mn4--TU.gif -vf "crop=1416:1088:0:0" -vcodec h264 -pix_fmt y...

On Monday I left my setup recording for 6 hours, hoping for the forecast possible X-class flare, but to no avail. Among the few lesser flares there was an interesting "unfurling" one (30 s intervals, 1:20 h total): https://cdn.astrobin.com/images/1530/2023/3542e8d6-788f-4aee-825c-999082a6f...

Good point about educational institutions - I agree it would make sense for them, without having the teacher or student(s) having to become expert(s) in amateur HW&SW. On the other hand, there's the question of long-term support (do those scopes all run on bespoke hardware interfaces and softwar...

George, How did it work as a binocular? As I understand, this configuration works only as a monocular. But then there's the question: what's the most compact binocular H-alpha setup we could think of, using the components currently in circulation? Maybe something like: take the (discontinued) LS35 ...

I'm of a similar opinion to pupak, and don't see much of a market for this. Most beginners start with simple 'scopes to dip their toes into the waters and see if they're into astro at all. Most advanced amateurs assemble their setups themselves (going through many iterations/variants over the years)...

Lovely shots, Alexandra.

Adding this filter to my shopping list.

What a great-looking telescope. And I envy you the workshop

Your photos gave me some ideas on how to improve my own single-truss 12" Newt (which I should finally get around to doing this year).

I'm a proponent of guiding through your main camera - works great for me (see this post ), also for multi-hour time lapses. Since SharpCap doesn't do too well for you, have you tried FireCapture? As for issues due to passing clouds, it seems to me they will affect all guiding approaches to some exte...

I've just downloaded it and it ran fine, libcfitsio-3.dll is present in imppg-win64.zip. Can you try downloading again, unpacking to a fresh directory and running from there? On another note: did you copy "imppg.exe" somewhere else (and renamed it "imppg 1.9.exe"?) It has to stay...

Great catch. Was it Lunt 152?

See also this thread for some software solutions (I use autoguiding via the main camera for time lapses).

Hey, that's why I wrote "can" Of course, the IO speed of the camera (how they implemented the readout & transport) also matters. From your example, [email protected] fps is just 92 MB/s. My older Chameleon 3 went up to 71 MB/s (USB 3), but my Blackfly S (also USB 3) goes up to 335 MB/s.

Just as reminder, binning CMOS does not change the fps, since binning is done after analog/digital conversion It won't increase the FPS by saving the time on AD conversion, but it definitely can due to 4x less amount of data to transfer (if the camera without binning is reaching its interface's max...