Відео

Thanks!

Your video is helpful to me. thank you I've been having trouble with GraXpert and Siril since last month, just like you. Today I got test results showing that it occurs with siril 1.2.2 and above.

This is great, thanks! However....UA-cam's new layout somehow clobbers where you wrote the download link. A Google search shows that you posted a link, but it's nowhere to be found on UA-cam (in Safari) or through the Get Scripts link in Siril. Can you please point me in the right direction? Thanks!

Questions/comments: I've noticed the deconvolution problems but hadn't attributed them to GraXpert. With small Seestar images, I find cropping is not necessary. Process is fast. Thanks for tip on reducing no. of iterations. In adjusting step size, try initial step increase to .0004 or .0005 to save time. In another video, you said AstroSharp may conflict with deconvolution. Any update? Nice tip about color stretch model. Is that true for nebulae too? I notice you did not use symmetry pt. for first 2 stretches. In linear stretch, you can click on histogram to set black point. Towards the end of processing, I try to make black area ~7-10% saturation. I noticed you did not use Highlight protection for galaxy core & didn't check the saturation there. I've been trying to avoid overstretching of bright areas (and bright stars) when I stretch them. In final image, sometimes stars have a green cast (perhaps due to independant color stretch?), so I use remove green noise tool. Also, I often increase saturation and/or do a saturation stretch rather than using my old (CS4) version of Photoshop. Sometimes after Siril processing, I use another noise reduction in GraXpert and/or the last two noise reduction processes in Siril. But occasionally these introduce serious artifacts in a galaxy core. Perhaps from GraXpert?

Thanks for the video. Just in case someone has issues like me, where Sirilic was always aborting because after calibrating it could not stack. It gave an error that it did not had any stars. Somehow the calibration flats removed all the stars. I read in somewhere that: "Flats won’t work properly unless you subtract the bias from both the flats and the lights." So I just added the step to also substract the Bias to the images, not just the flats, like in the video, and I stopped having issues. It stacked just great.

Great tutorial. Thanks. Comment: For integration >30 min, a Seestar produces a lighter diagonal band with dark corners due to field rotation artifacts. To hide these, I use the Siril Background Extraction tool --- more than once before stretching. I often use it once w/o dither and then 2-5 times with dither. It really helps.

I'm looking forward to trying this. I used AstroAF's video to install Sirilic on a Mac in a Python environment. I still had to make some tweaks beyond his video, but it's running now.

Thanks for the guide

I have a question not associated with this video, but abour your narrowband processing and hubble pallet videos. I wanted to make a script like ExtractHaOIII but include drizzling. Currently i shoot very under sampled so drizzling is almost necessary. But I'm struggling to figure out how to do this. I read a cloudy nights thread and it didn't really help as it ended before they got it working. My other options i understand are just stacking normally, then split color channels(but that doesn't seem to give as good of an effect as the script), or possibly just stack nornally and use your automatic hubble script? What do you think? An automatic script that stacks, drizzles, and extracts into two fake mono images seems to me like the simplest route but possibly most complex to set up. Could you help me? And thank you for all your help already. I got an asi2600mc pro and upgrading to a good camera caused me to dive into seeing how to best process and you've been great help!

will this script work with the seestar files?

best siril tutorials out there thank you so much.

QUESTION: When I try to right click over starless image, It will not bring up the default box to save different type of files, I have a total different menu. any ideas? Enjoy the tutorial videos!

Me too

Thank you! I'm completely new to astrophotography and have been struggling finding an easy to understand tutorial of all the steps. I'm looking forward to seeing your more advanced videos as I progress.

maybe because of one of the slider below in siri window? I always get max value, not 59195.

😄 same

does this also work for the dwarf?

Help, Rich!! I cannot get into the index site. I get on a site unrelated to astronomy (and Bitdefender doesn't like it). would you know what I can do? Thanks.

Hello Rich, is the Unsharp command applied in Linear?

Great tutorial, but you really should use Remove Green background option on this youtube video😂

Clouds are like "No Happiness for you" lol

Me too 😊 👍 nice rig.

😊

Can't tell you how much I appreciate your tutorials. I'm also fairly new to it and every time I get a little lost I go back to these as references. I don't seem to have the issue you're having between Graxpert and Siril though. Not sure why but mine looked the same in Siril as I left them in Graxpert. Thanks again. I don't subscribe to many channels, but you've earned this guy's click.

This is great, thank you! Does this script include drizzle?

I have used Fastar than Hyperstar from when it was first created by Celestron. I had one of the very first Fastar/ST 237 setups. When Starizona improved the design and Celestron let him take over the product and make improvements and scale it up to larger scopes I progressed from all the versions and now with V4 on both my 11" SCT and 8" SCT HD scopes. I also manage a Scout observatory in MIchigan that has a 14" Celestron SCT with V3 Hyperstar. I am a long time friend and customer of Dean, the owner of Starizona. They are a fantastic company and great employees. Collimation was never a big issue. Center a star in the full FOV, get the shadow of the secondary centered and than VERY IMPORTANT....RECENTER the star and repeat the process. Once it is very good tighten the screws a bit tighter so they won't come loose when transported Both of my scopes hold collimation very well. I use with a couple of OSC cameras. Lately I have been using a ZWO 071 with the various ZWO items like their electronic focuser, guide scope via a 60m guide scope, etc. The 11" is on a AP 1100, the 8" is on a ZWO AM5 for field use. I normally use a ASI AIR Plus to run everything from my Samsung Galaxy large tablet. If you use a narrow band filter.... you need one designed for a fast scope. If you use a NB filter designed for slower scopes, it will fall off the band

I use graxpert in Windows and never found that issue. Some info, I always use 0.7 for gradient and de noise factors, and most of the times I use version 2.0 for denoise model, which is much faster than version 3 and I see not relevant improvement. In my workflow I found best results applying a second denoise in the stretched image, as the process of streching seems to reintroduce noise in the image.

That Iris is spectacular. I always have issues with dark nebulae. Rest are amazing as well, great payoff with the hyperstar.

Great! Thanks!

I gotta know… what is your favorite sci-fi movie? Because I don’t understand all the stuff you’re talking about right now. 😂

Here you are again to save the day! Thank you for the fix. I couldn't be happier to be a Deep Space Astro member.

Nice video. I love those hyperstars. Starizona is a great company to deal with. Have both version 3 & 4 and love them both. Best regards Luis from NY

Gonna be honest here, I didn't notice any difference until the darker area at the very end. Perhaps it was due to the YT compression, combined with the fact that you were working on bright objects against a brighter background, or perhaps my eyes are starting to fail me. Anyway, interesting content, thanks for uploading.

It looks better when I use the Asinh stretch instead of the auto stretch mode.

Okay, started the tutorial. Got as far as Starnet installation. I run Linux. Downloaded the linux package, unzipped it. There is a bunch of files, not executable and no instructions. How to install this? Also, I have Siril 1.2.3. Do I even NEED to install Starnet?

With that color it still looks like a ZWO ASI camera.

Thanks, I enjoyed this post. I also bought a used Hyperstar from a friend's estate. I bought all the bits and pieces to suit my camera from Starizona and whilst there was a small hiccup the recovery from their side was fantastic. Great considering that I live halfway across the world from them. You don't seem to be using the Celestron dew ring controller. How are you powering and controlling it? Do you just apply 12v directly or do you have a means of controlling it manually or in software?

extrem cool👍

I have the Hyperstar version 4. I tried the shim spacing technique for collimation, but that never worked. I call Starizonia and they recommended starting flush . Collimated on a low magnitude star and now it is perfect.

How do you focus? What are you using?

Wonderful first images ! In some of them, the shape of the stars is strange, do you know the reason for that ?

Great video! The final images look incredibly better using Siril, Graxpert and GIMP.

Glad to see you obtained a Hyperstar. Can't wait to see more videos from you about it. I have a v4 with a C8 and love it. I live in Tucson about a 15 min drive from Starizona. Their staff is the best.

Great vid Rich, definitely has got my want on! Cheers! Doug

Congratulations! I just recently used my c8/hyperstar v3 for the first time and am thrilled with it. I did align my corrector plate first, and use the hyperstar flush. I'm really wanting to leave the scope in this configuration now, so thinking about adding a small sensor small pixel camera such as the 715c sensor for some extra magnification and resolution come galaxy season next year.