oh my, I noticed that a lot when I was a kid and looking at the sky, that I could see stars in my peripheral vision better than when looking straight on.
As the Messier list dwindles, I've been half-expecting an omnibus episode entitled "Also not a Comet" to wrap up the remaining "generic" catalog entries. Yet, somehow, there's always something special or unique about each object to share. Well done!
I was JUST looking at M41 last night and you guys posted this the same day lol! Sweet!! Also took a peek at M46 and M47 while I was in the neighborhood.
So what you're saying is that when you look at the thigh of the dog with your naked eye there seems to be a single comet-like object, but as you look with greater magnification you can see that it's actually quite a bit Messier?
I noticed that I could see very dim objects better using my peripheral vision at a very young age, so I'd often turn off all the lights and find out what was the least bright thing I could see with my peripheral vision only. This was also around the time I figured out that if your room is dark enough, you can't see colors at all or only very faintly; years later I learned about rods and cones and it makes sense: a dark room has enough light to stimulate your rods but not enough to stimulate your color-sensing cones. Normally you'll be able to figure out everything's color anyway because you know your own room, but if you do the same thing in an unfamiliar location it's a lot harder to tell what color things actually are.
So fascinating to hear Aristotle as a scientist rather than a philosopher. Dark skies of 250 B.C. would show so many deep sky fuzzies. Thank you DSV for such a great short video.
"to hear Aristotle as a scientist rather than a philosopher" This distinction didn't exist until pretty much the 1700s. So it would be silly to think of Aristotle as 'a scientist'. And saying he was a 'philosopher' only makes sense if you understand the context of what ancient philosophy was and wasn't.
@@DeepSkyVideos OMG ! thank you so much for this advice. I've just opened the (another !) treasure chest !!! And of course, thank you for these amazing videos on DeepSky. I'd be delighted if you make a series about austral DSO !!! Some of them are really wonderful...
In school I was taught that the reason you can't see faint lights if you stare directly at them is because that puts it right on the blind spot of your eye where the optic nerve connects. Looking sightly to the side of it moves it out of your blind spot.
No that's not right, the blind spot is off to one side of your centre of vision, about ten degrees to the left for the left eye, to the right for the right eye.
The blind spot does indeed have no rods or cones because it is where the optic nerve is. But it is NOT in the centre of your vision. The averted vision thing is as Prof Merrilees explained in the video.
it's a shame I sometimes need to use that to properly see the pleiades. stupid light polution even outside the cities in the Netherlands. (maybe my eyes are a bit worse than average too)
I used to be able to distinguish the six or seven brightest stars in the Pleiades easily. Now, at 70, its just a blur. Perhaps far-sight adjustment would help.
It's a great trick to teach people in order to make them appreciate the light polluted night sky in a new way, though. I've taught it to my mates in order to show them that Andromeda is visible to the naked eye in the southern Netherlands :).
![เปิดบ้าน นาราเครปกระเทย 1 ไร่ ขายขาดทุนหลัก10ล้าน เอามาใช้หนี้!!! l [Nickynachat]](http://i.ytimg.com/vi/0jz84VFWVP4/mqdefault.jpg)
oh my, I noticed that a lot when I was a kid and looking at the sky, that I could see stars in my peripheral vision better than when looking straight on.
Thanks for making a Deep Sky video Brady. This channel is my favorite of all of your projects.
-Jake
As the Messier list dwindles, I've been half-expecting an omnibus episode entitled "Also not a Comet" to wrap up the remaining "generic" catalog entries. Yet, somehow, there's always something special or unique about each object to share. Well done!
BobC they’ve done 70 of 110. May as well finish.
I was JUST looking at M41 last night and you guys posted this the same day lol! Sweet!! Also took a peek at M46 and M47 while I was in the neighborhood.
nice one
So what you're saying is that when you look at the thigh of the dog with your naked eye there seems to be a single comet-like object, but as you look with greater magnification you can see that it's actually quite a bit Messier?
I noticed that I could see very dim objects better using my peripheral vision at a very young age, so I'd often turn off all the lights and find out what was the least bright thing I could see with my peripheral vision only. This was also around the time I figured out that if your room is dark enough, you can't see colors at all or only very faintly; years later I learned about rods and cones and it makes sense: a dark room has enough light to stimulate your rods but not enough to stimulate your color-sensing cones. Normally you'll be able to figure out everything's color anyway because you know your own room, but if you do the same thing in an unfamiliar location it's a lot harder to tell what color things actually are.
yay its the fast talking professor again with the mad scientific flow!
I set speed at 0.75 when he's on. =)
Yeah boy! Another Messier object video straight from the fiber-optic cables running across the Atlantic!
So fascinating to hear Aristotle as a scientist rather than a philosopher. Dark skies of 250 B.C. would show so many deep sky fuzzies.
Thank you DSV for such a great short video.
"to hear Aristotle as a scientist rather than a philosopher" This distinction didn't exist until pretty much the 1700s. So it would be silly to think of Aristotle as 'a scientist'. And saying he was a 'philosopher' only makes sense if you understand the context of what ancient philosophy was and wasn't.
At least he wasn't a dumbass.
Hurray!!! I love these videos, but was worried we wouldn't be getting any more after the long hiatus.
PLENTY more are on the way!
"Some of the things of what ancient astronomers were doing were truly stunning" Tell us more, professor!
Great to see ANOTHER Messier object, thank you!
It is a really beautiful cluster even in binoculars!
"turns out there is one potentially interesting thing about this cluster" good job in making it exciting ;)
Would love to hear more about ancient astronomy!
Make sure you go check out Objectivity!
@@DeepSkyVideos OMG ! thank you so much for this advice. I've just opened the (another !) treasure chest !!!
And of course, thank you for these amazing videos on DeepSky. I'd be delighted if you make a series about austral DSO !!! Some of them are really wonderful...
In school I was taught that the reason you can't see faint lights if you stare directly at them is because that puts it right on the blind spot of your eye where the optic nerve connects. Looking sightly to the side of it moves it out of your blind spot.
No that's not right, the blind spot is off to one side of your centre of vision, about ten degrees to the left for the left eye, to the right for the right eye.
No, he's correct. There are no rods or cones where the optic nerve connects to the back of your eye.
The blind spot does indeed have no rods or cones because it is where the optic nerve is. But it is NOT in the centre of your vision. The averted vision thing is as Prof Merrilees explained in the video.
Funny, I noticed during darkness to the rods/sticks brightness effect myself but had a different hypothesis about what I might be
Deep eye videos
Interesting discussion of 2,300 years of astronomy!
It is a nice cluster, easy to pick up from my light polluted place in Texas.
He must have had good eye sight! LOL
I have an image of Canis Major with M41 easily visible Southwest of Sirius.
This same technique allows me to pee in the dark!
I've just been getting it on my leg
Aircraft pilots learn to look to the side of a distant lights at night. Looking right at them makes them disappear.
I forgot i was subscribed to this channel!
Maybe you're subscribed to Foodskey too?
Aristotle was a genius! A very stable genius.
Jerry, my rods and cones are all screwed up!
The Ancient Greeks were ridiculously ahead of their time
it's a shame I sometimes need to use that to properly see the pleiades. stupid light polution even outside the cities in the Netherlands. (maybe my eyes are a bit worse than average too)
I used to be able to distinguish the six or seven brightest stars in the Pleiades easily. Now, at 70, its just a blur. Perhaps far-sight adjustment would help.
It's a great trick to teach people in order to make them appreciate the light polluted night sky in a new way, though.
I've taught it to my mates in order to show them that Andromeda is visible to the naked eye in the southern Netherlands :).
Yaaaay! Luv.
I'm greek and i understand more in english rather than in ancient greek!
#404th view :D (it would have been better on computerphile, though)
You can see how much his hair has greyed in the past six years.
It happens
please bring back the astrophotographers! Nik Szymanek, Paul Haese, Pete Lawrence or some new people.