IC 410 Tadpoles Nebula

 Posted: Sep 26th, 2025
Show astrometry on hover
NGC
IC
HD
Technical Info
Telescope/Lens: Sky-Watcher 150/750PDS
Camera: ZWO ASI533MC Pro
Mount: JUWEI 14
Guide Scope: Svbony sv 106 60mm
Guide Camera: ASI120mm
Software: Dss, GraXpert, Pixinsight, Photoshop
Accessories: Asiair Mini
Exposure:
300 x 30" ISO/Gain: 100 - Svbony sv 220
300 x 40" ISO/Gain: 0 - Askar Colour Magic C2 Duo Narrowband Sii +Olll
Blue zoneLight Pollution:
 Smolenskaya Oblast Aleksinskiy Astrodomik, Russia
 Sep 25th, 2025
5 h 50 m
471
It was a great astro marathon last week! So many objects, dark clear nights. Just a gift! .... Well, now the sky is closed (I hope, not for long). Finally, I'll get some sleep=)) .
Resolution: 2490x2628 px
Scale: 9561 KB
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Comments

Good work
Clear skies
27 Sep, 2025 Reply
Iren Replied to Ryjov Aleksey
Thank you, and to you too!
27 Sep, 2025 Reply
Wow) I have a feeling you're shooting without dithering.
27 Sep, 2025 Reply
Iren Replied to Oeswww
What? Where did that feeling come from?)
27 Sep, 2025 Reply
Oeswww Replied to Iren
There is noise resembling a "coroied" plaster texture. This is called walking noise.
27 Sep, 2025 Reply
Iren Replied to Oeswww
I'm very familiar with dithering. I just don't understand where this noise is coming from if dithering is applied by default. Could you please justify your criticism?
27 Sep, 2025 Reply
Oeswww Replied to Iren
Iren, it's good that you know about dithering. It's not enabled by default because it still needs to be configured, especially when using ASIAIR. Now, regarding the characteristic noise. Don't you notice it yourself? I can only point it out, since I can't attach a screenshot with arrows.
27 Sep, 2025 Reply
Iren Replied to Oeswww
Well, there's also a slight bit of defocus here, if we're being really picky. You somehow missed that one.
27 Sep, 2025 Reply
Oeswww Replied to Iren
I wasn't nitpicking. I was just sharing my observation. The work is great, but for some reason, there's a characteristic noise that reminds me of the noise that appears when there's no frame offset. That was my first guess. But do you understand what I'm talking about at all? What are your observations and thoughts on this?
27 Sep, 2025 Reply

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