Demystifying Drizzle in Astrophotography
ฝัง
- เผยแพร่เมื่อ 15 เม.ย. 2024
- Drizzle is quite a complex topic - so I break it down for you in what drizzle is, why and when to do it and how to apply it in AstroPixelProcessor and PixInsight.
Join my Patreon site for getting cutting edge news about Astrophotography software and equipment, early access without commercials and tons of supporting documents: www.patreon.com/user?u=83665984
If you buy any equipment you may consider these two shops - by using the links below you support the channel:
Agena Astro: agenaastro.com/?rfsn=7982331....
High Point Scientific: www.highpointscientific.com/?...
MTF Analyser: www.rc-astro.com/mtf-analyzer/
BlurXTerminator: www.rc-astro.com/resources/Bl...
Video of @astrophotocologne (German): • Drizzle Integration Pr...
Video of @DanielNimmervoll (German): • Drizzle Praxis Video -...
#pixinsight #astronomy #astrophotography
------------------------
Music credits:
ORBITAL_StriKe by B E T T O G H | / bettogh
bettogh.bandcamp.com | open.spotify.com/artist/3zDlq...
Music promoted by www.free-stock-music.com
Creative Commons Attribution 3.0 Unported License
creativecommons.org/licenses/... - วิทยาศาสตร์และเทคโนโลยี
Finally I understand what this drizzling thing is all about with a very clear explanation. Thanks for this extremely useful tutorial.
After watching this I'm noticing that my drizzled stacks are dimmer and harder to stretch than non-drizzled. For Christmas Tree Nebula with around 60 x 300s I abandoned the drizzled image in order to get enough saturation on the starless part of the image. Even with Jelly Fish at 111 x 300s I find the starless to be very weak for stretching in GHS. And these are with a drop size of 1, not 0.8.
Excellent tutorial. I was never sure how much scaling (drop shrink ) to use. You have now given me a good starting point. Thank you, Sascha for clearly explaining the theory and process 👍
Nice timing with siril now featuring true drizzle as well exactly today!
A great tutorial on a process I didn't understand before. Thank you Sascha.
Excellent tutorial. I've always assumed it was a complex subject so I've never used drizzling. But even through you tube compression it's obvious how much sharper the images are and the value of drizzling. I always dither for noise reduction so I'll definitely enable drizzling when I do my stacking in astro pixel processor. Many thanks for sharing 👍
Great explanation. New subscriber earned!
Just found your channel. Thanks for making these tutorials! ❤
Now I get the difference between the bayer trans drizzle and the normal drizzle, it is for the colour/greyscale so when I split the channels in APP I use just drizzle for HA and O3 and bayer drizzle for the Colour version, this explains why I get the crosshatch pattern when bayer drizzling.
Hi Sacha,
Nice video! Should you also mention the requirement to dither with a sufficient imaging camera pixels (for instance at least 20 pixels on the imaging cam)? And also to dither with a non-integer pixel value on the imaging cam (we should target a pixel value for the imaging cam with some decimals)? NINA (in nightly version) has the ability to show you the number of imaging pixels you dither when you set your guiding cam dither pixels.
Keep it up with your very interesting videos! Merci vielmal
Very interesting and valuable comment!!!! And so we learn from each other!!!!!
@@viewintospace My pleasure! I've already learned so much from you...
And how often should you dither? I recall Quiv once mentioning you should dither every picture. Any ideas on that?
@@tvanpeer I would support that statement from Cuiv. If the minimum requirement is 30-50 pics then it means so many pics with different positions - so except you make 1000s of shot exposure pics, you should dither every time!
@@viewintospace And for OSC with scale 1?
I typically dither at every 3 subs and a 5 pixel movement. Is that enough if I am gathering say 100 to 200 subs? Going to dithering every sub would add a bunch of time to my imaging session. How often should you dither to support drizzling? Love your tutorials. You do a great job.
If you plan to shoot a 100 subs, I would dither every 2nd sub to reach the 50 dither movements... and so on....
Great video Sascha. I have a Redcat 61 and ASI533 mc pro. The red lines in the graphic disappear with drizzle 2x, the red figures disappear at drizzle 3x. What is wise? 2x or 3x? Thanks
Stay with 2x, Only if you would be still substancially oversampled 3x would be justified.
I always BIN x2 to make my scope under sampled to collect light faster then drizzle but i use a momo ccd not cmos
As always with your videos it's nice to get hard numbers; I've been setting drop shrink to 1, so may need to go back and reprocess. My workflow has gravitated to WBPP with drizzle 2x, GraXpert, BXT, then resample back to the original resolution. Is that what you do?
I never resample back, always happy to have some extra resolution 😉
Should you click "apply to all groups" in WBPP?
Und Gruezem auch, Ich wohnte in der Schweiz in 1892. Es war ausgezeichnet. Und jetze in Texas Viel Danke für dir lehering
Is there an online to calculate if im over or undersampled?
The MTF tool I demonstrated is online - link in the description
@@viewintospace still watching, sorry and ty