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APOD: Firefly Trails and the Summer Milky Way (2016 Jul 02)
Posted: Sat Jul 02, 2016 4:10 am
by APOD Robot
Firefly Trails and the Summer Milky Way
Explanation: A camera fixed low to a tripod on a
northern summer's eve captured the series of images used in this serene, southern Ontario skyscape. The lakeside view frames our fair galaxy above calm water and the night's quintessential luminous apparitions. But the trails of light are neither
satellite glint, nor
meteor flash, nor
auroral glow. In the wide-field composite constructed with four consecutive 15 second exposures, a pulsing
firefly enters at the right, first wandering toward the camera, then left and back toward the lake, the central Milky Way rising in the background.
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Re: APOD: Firefly Trails and the Summer Milky Way (2016 Jul 02)
Posted: Sat Jul 02, 2016 2:31 pm
by heehaw
Re: APOD: Firefly Trails and the Summer Milky Way (2016 Jul 02)
Posted: Sun Jul 03, 2016 8:16 pm
by DavidLeodis
In the information with the nice photo in Malcolm Park's section in the SmugMug photo hosting website it states "Circle Of Confusion 0.030 mm". Could someone please state what that means?
![Confused :?](./images/smilies/icon_confused.gif)
Re: APOD: Firefly Trails and the Summer Milky Way (2016 Jul 02)
Posted: Sun Jul 03, 2016 8:30 pm
by geckzilla
DavidLeodis wrote:In the information with the nice photo in Malcolm Park's section in the SmugMug photo hosting website it states "Circle Of Confusion 0.030 mm". Could someone please state what that means?
![Confused :?](./images/smilies/icon_confused.gif)
Why don't you link directly to whatever you are talking about instead of only describing it? It makes it a chore to figure out what you're referencing.
Re: APOD: Firefly Trails and the Summer Milky Way (2016 Jul 02)
Posted: Sun Jul 03, 2016 8:44 pm
by DavidLeodis
geckzilla wrote:DavidLeodis wrote:In the information with the nice photo in Malcolm Park's section in the SmugMug photo hosting website it states "Circle Of Confusion 0.030 mm". Could someone please state what that means?
![Confused :?](./images/smilies/icon_confused.gif)
Why don't you link directly to whatever you are talking about instead of only describing it? It makes it a chore to figure out what you're referencing.
That's an unpleasant toned response geckzilla
![Rolling Eyes :roll:](./images/smilies/icon_rolleyes.gif)
. I'm sorry that I caused you a chore
![Sad :(](./images/smilies/icon_sad.gif)
.
Re: APOD: Firefly Trails and the Summer Milky Way (2016 Jul 02)
Posted: Sun Jul 03, 2016 8:48 pm
by geckzilla
What? It takes a few seconds for you to copy and paste the URL of whatever page you are looking at. I tried figuring it out on my own and gave up because I can't find it. So, yes, it was a chore, and I also got nowhere.
Re: APOD: Firefly Trails and the Summer Milky Way (2016 Jul 02)
Posted: Mon Jul 04, 2016 12:58 am
by rstevenson
DavidLeodis wrote:In the information with the nice photo in Malcolm Park's section in the SmugMug photo hosting website it states "Circle Of Confusion 0.030 mm". Could someone please state what that means?
![Confused :?](./images/smilies/icon_confused.gif)
Perhaps more than you need, but the Wikipedia page "
Circle of Confusion" has it all laid out for the curious.
In short... "In optics, a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source."
Rob
Re: APOD: Firefly Trails and the Summer Milky Way (2016 Jul 02)
Posted: Mon Jul 04, 2016 11:06 am
by DavidLeodis
rstevenson wrote:DavidLeodis wrote:In the information with the nice photo in Malcolm Park's section in the SmugMug photo hosting website it states "Circle Of Confusion 0.030 mm". Could someone please state what that means?
![Confused :?](./images/smilies/icon_confused.gif)
Perhaps more than you need, but the Wikipedia page "
Circle of Confusion" has it all laid out for the curious.
In short... "In optics, a circle of confusion is an optical spot caused by a cone of light rays from a lens not coming to a perfect focus when imaging a point source."
Rob
Thank you for your help Rob
![Smile :)](./images/smilies/icon_smile.gif)
.
Re: APOD: Firefly Trails and the Summer Milky Way (2016 Jul 02)
Posted: Mon Jul 04, 2016 5:21 pm
by geckzilla
Really. That's the last time I try to help you. Help yourself. You can look up Wikipedia articles.
Re: APOD: Firefly Trails and the Summer Milky Way (2016 Jul 02)
Posted: Mon Jul 04, 2016 6:13 pm
by Fred the Cat
I think that is why I like the format of this forum. Linking sites on a post is a good way to
show rather than tell. For any writing it's easy to miscommunicate one's thoughts and links help the process. Of course the goal is just to get an idea from point A to point B (to those in internet-land) and, however it happens, what you get is a good way to work on writing skills.
If you choose, throw in a little sarcasm or a pinch of humor to spice up the literary recipe and "post" happens.
![:) :ssmile:](./images/smilies/smile.gif)