Stellar Bow Shocks in the Seagull Nebula
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- Опубликовано: 20 июл 2024
- Rabbit Hole Time! Just finished my first processing of the Seagull nebula shot with my William Optics RedCat 51 and ZWO ASI294MM. I'll be darned if I don't see some cool features in the picture. A quick Google search of one of the stars provides a paper trail on "Stellar Bow Shocks" created by HIP 34301 and HIP 34536. Very interesting! Enjoy!
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I love the scientific aspect of your videos. Great content.
Two thumbs up!!
This hobby has a lot going on. Thanks for watching!
Nice stuff. Your videos are always informative and interesting.
Thanks, John!
Always interesting, James!
Thanks, Douglas!
Super interesting video. Helps to remind us that astrophotography can be more than just pretty pictures. A little advanced for me at moment but looking forward to looking for this in future. More like this would be amazing.thank you 😊
Thanks, Mark. Yeah, I really like being able to see evidence of some real dynamics in our static images. And you end up learning something to bore your family and friends with. As if they aren't bored with us already!
Another great, educational video. Love it when we discover the rabbit holes in our images. Many thanks, James!
Thanks, Dave! Gotta love the rabbit holes...
Very nice James, Thank you. But some day when you have nothing better to do. lol right. Would you explain the RGB star part of your processing. Not sure I understand how that works. I'm shooting with the 294mm but not sure how you go about the star part. Thank you again great watching you videos.
Great info and video James! funny thing is my Seagull is on my PC as I process it.. I see them both. CS
Awesome, Jason. Lot's "stories" hiding in plain sight in our images.
Very Nice! I have that target on my list for this week, but given our clouds in Dallas not sure whether will get it. Also great job on adding in the science/astronomy with backup references, it differentiates your work from others and is a nice change.
Know what you mean about the clouds. I could have gone out last night, but I'd just have to bring everything back in before the forecast rain. The life of an astrophotographer. Good thing about astrophotography, all the targets we miss, come back around...
Very interesting. I will look through my old data for evidence of these. (Just looked at my Seagull from last year, and sure enough I also see that one. ) Same thoughts as another poster comments I see... I wonder if you can fit the shape of an ideal 3D bow shock to the observed 2D projection so as to determine the third dimension of motion, i.e. the component away or toward you.
Thanks for watching, Richard. Interesting idea. I guess you'd have to take the theoretical bow shock shape and increased density in "shock shell", compute the ionization brightness and see how it varies by changing the velocity component into/out of the page. Ouch. Let me know what you come up with!
James, Sorry MY wife call me away and I left your video running. I see you addressed the issue.
great video as always James - time to comb through my images for bow shocks too! I was wondering about the vantage point also until you mentioned it at the end, the halo would be challenging to resolve I would think given perspective (size of halo dependent on speed of object through medium or vice versa). Definitely worth checking older images for these "cool" features and potentially reprocessing also.
Thanks for watching! Yes, I agree, the "spot" size for a shock produced by an approaching or receding star would have to be bright enough and large enough to not be blown out by the brightness of the star itself. Probably take very special scenario, if possible at all.
Interesting. There are several like these in Orion Nebula. They are originated from the trapezium.
Someone else mentioned that. I have not imaged Orion. Would be interesting to see if any/how many of the stars listed in the E-BOSS survey are in Orion.
@@Aero19612 There is an Adam Block’s video on how to process LRGB picture of Orion Nebula. He showed several features like you indicated in well processed Orion. Moreover, bow curve was more pronounced at features located close to Trapezium.
Interestingly, it was claimed that those features are lesser pronounced in SHO photos. I just wonder weather infrared photos could be better. Do you use near infrared filters in astrophotography?
did you count the ones in M42?
i got a few ... will read that paper to identify them ...
Hi Alex. I've never shot M42, believe it or not. Check out the stars in the E-BOSS survey and see if any of them are in M42.
Such a great video but it lost me with all the mathematical equations which make no sense to a non mathematical mind.
Haha. Don't let the two equations spoil the video for you! I find they provide valuable insight into why we see what we see. Most people don't want to do math, so I just bring up some examples of how the star's velocity affects what we see in the photograph. Thanks for watching!