KEEP the Satellites? - Pixinsight Tutorial

Рет қаралды 2,584

Күн бұрын

Satellites constantly intrude on astrophotography. But what if you WANT to keep them in?
The Witch Head Nebula is a notorious spot for geosynchronous satellites. Almost every frame will have satellites passing through. Stacking algorithms make quick work of them, but what if you WANT to keep them in? It’s not straightforward, but I’ve found a workflow in Pixinsight that allows you to have a beautifully processed image AND the satellites that would normally be rejected.
00:00 Intro
01:24 Blink
02:11 Stacking Settings
05:00 PixelMath
08:38 What Are the Satellites There?
09:48 RGB Satellite Trails
11:41 Crazy Meteor Vapor Trail
13:36 Are They REALLY Geosynchronous?
18:09 Conclusion
Image of Satellites through Witch’s Eye
Kasra Karimi
www.astrobin.com/ezm6qv/
My Equipment:
Telescope: Celestron RASA 8
Imaging Camera: ZWO ASI1600MM Pro
Mount: iOptron CEM40
Filters: 2" Baader RGB and f/2 3.5/4nm Narrowband SHO
Guide Camera: ZWO ASI290MM Mini
Guide Scope: Orion 60mm Guide Scope with Helical Focuser
ZWO ASIAir Plus
ZWO EAF (Electronic Automatic Focuser)
Twitter: / nickjlake
Insta: / nickjlake
Astrobin: www.astrobin.com/users/bortle9/
Video shot on Pixel 4 XL
Rode Wireless Go microphone system
Photographs of the universe, with galaxies, stars, nebulae, supernovas, comets, planets, Moon, Sun. Inspiring wonder about the night sky, even from the light pollution of Chicago.

Пікірлер: 22

@WindyCityAstrophotography 2 жыл бұрын

Thanks for watching! Have you ever imaged one of these satellite-heavy regions?

@tensorhugh2588 2 жыл бұрын

Fascinating! My only experience with high satellite traffic was around the Horsehead nebula region, must be similar geosynchronous satellites.

@WindyCityAstrophotography 2 жыл бұрын

@@tensorhugh2588 Yes, same band of them!

@DSOImager 2 жыл бұрын

Great video Nick! Your witch head came out very nice and I liked your procedure for getting the trails put back in. I'll have to try that some day. Appreciate your explanation of geosynchronous sats too :)

@WindyCityAstrophotography 2 жыл бұрын

Thanks! I wish I was better at animation so I could have explained it that way, but it worked out okay! 😆

@AstrocandyTV 11 ай бұрын

Great info, particularly enjoyed the explanation for geosynchronous satellites moving in the frame. Subbed!

@astralbody 2 жыл бұрын

Very cool change up to include our civilization's space farers orbiting our tiny planet. Definitely have noticed certain targets are more prone to the "fireflies" above us. Nice new perspective. Thanks Nick! PS: I especially love pixinsight tuts. Yours are great for newbs like me 😊 love the meteor! Love finding things like that!

@WindyCityAstrophotography 2 жыл бұрын

Thanks so much, Victoria!

@davewilton6021 2 жыл бұрын

Neat! It brought be back to my schooldays and struggling through the non-intuitive nature of orbital mechanics.

@WindyCityAstrophotography 2 жыл бұрын

Indeed! Definitely non-intuitive at first. Have you played Kerbal Space Program? I never really "got" orbital mechanics until I played that and it suddenly made a LOT more sense

@LogansAstro 2 жыл бұрын

Very informative video. I was doing 20min exposures in one part of the sky some months back and in one frame I counted 9 satellite trails! Funny you should mention the meteor and vapour trail because in my latest project I captured 2 meteors on different nights with vapour trails which I don't recall ever seeing in my imaging sessions before so i thought it was pretty cool.

@WindyCityAstrophotography 2 жыл бұрын

Wow so cool! Yeah with a 20-minute exposure you'd definitely up your chances of capturing one! Have you imaged any geosynchronous regions with that length of exposure? Those would be some wild subframes, almost like a Starlink swarm.

@KopLamp 2 жыл бұрын

Very cool video Nick! Wasn’t it you who mentioned it like this somewhere (now my preferred way of explaining it)? “With geostationary satellites it is not the satellite traversing through the field-of-view, but the FOV traversing past the satellites”

@WindyCityAstrophotography 2 жыл бұрын

Thanks Martin! Yes I think so, maybe on FB?

@benc7102 2 жыл бұрын

G’day Nick Great image of witch head nebula One nebula I always struggle with Cheers mate

@WindyCityAstrophotography 2 жыл бұрын

Thanks Ben! I was very happy to get it; dark sky trips are few and far between!

@aerozg 12 күн бұрын

Hmm, i don't have the No rejection option listed in the Rejection algorithm dropdown.

@nicolast3499 2 жыл бұрын

At 16:40 there is no rounding at all: you have found the precise rotation time of the earth which is 23hours and 56min. The 24hours is the rotation earth time relative to the sun.

@nicolast3499 2 жыл бұрын

I was wrong as the calculation is in decimal basis so you actually found 23hours and 33minutes (i was confused by the 56 which is precisely the correct value in minutes). However the correct earth rotation time (relative to space) is 23h and 56min

@WindyCityAstrophotography 2 жыл бұрын

Yes, an honest mistake, but funny how it ended up being .56 😎