- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
Astronomy Picture of the Day
Posted on 8/20/21 at 3:46 am
Posted on 8/20/21 at 3:46 am
Frames From A camera that spent three moonless nights under the stars create this composite night skyscape. They were recorded during August 11-13 while planet Earth was sweeping through the dusty trail of comet Swift-Tuttle. One long exposure, untracked for the foreground, and the many star tracking captures of Perseid shower meteors were taken from the village of Magyaregres, Hungary. Each aligned against the background stars the meteor trails all point back to the annual shower's radiant in the constellation Perseus heroically standing above this rural horizon. Of course the comet dust particles are traveling along trajectories parallel to each other. The radiant effect is due only to perspective, as the parallel tracks appear to converge in the distance against the starry sky.
Notable APOD Image Submissions: Perseid Meteor Shower 2021
Tomorrow's picture: mutual events
9
Posted on 8/20/21 at 4:07 am to pioneerbasketball
Posted on 8/20/21 at 4:24 am to pioneerbasketball
UFO’s are real.
Posted on 8/20/21 at 5:45 am to pioneerbasketball
Haters will say it's fake.
Posted on 8/20/21 at 5:52 am to pioneerbasketball
I see Uranus
Posted on 8/20/21 at 5:57 am to jamboybarry
Uranus is fake
Posted on 8/20/21 at 5:59 am to MGP
Haters don't exist
Posted on 8/20/21 at 6:34 am to pioneerbasketball
APOD is my daily go-to. After TD of course
Posted on 8/20/21 at 7:20 am to DashRipRock
We did star trails a long time ago (albeit NOTHING as nice as that!). But learned how to do it with the analog cameras... wonder if it can even be done with a digital SLR or if a crazy long exposure would just saturate the CCD.
Posted on 8/20/21 at 7:33 am to pioneerbasketball
I finally pulled the trigger on the Nexstar 8se scope and am waiting for the nexYZ mount to come in. I took a few pictures just holding the camera to the eyepiece and it just doesn’t capture what I’m seeing. When my Barlow lens and camera mount come in the photos will be incredible.
Saturn and moons
Jupiter and moons
Quarter moon Earlier this week
Great OP, PB
Saturn and moons
Jupiter and moons
Quarter moon Earlier this week
Great OP, PB
This post was edited on 8/20/21 at 8:37 am
Posted on 8/20/21 at 7:34 am to Misnomer
Great pics.
Posted on 8/20/21 at 7:39 am to pioneerbasketball
Thanks PB. 
The 8se was worth every penny. I was able to assemble it and start using it right away.
There is something surreal about seeing the planets for myself in such stunning detail for the first time, proving to myself what we see in books is true.
The 8se was worth every penny. I was able to assemble it and start using it right away. There is something surreal about seeing the planets for myself in such stunning detail for the first time, proving to myself what we see in books is true.
Posted on 8/20/21 at 7:43 am to Misnomer
Dude that is a street light! No, seriously that is cool you are able to see that.
Posted on 8/20/21 at 8:07 am to Misnomer
Do you live far away from city lights? I'd love to get a good scope but worry the light pollution would ruin a lot of viewing.
Posted on 8/20/21 at 8:19 am to TomSpanks
I live in a somewhat light polluted area, but my telescope has a large enough optical tube to make up for it.
Posted on 8/20/21 at 8:21 am to pioneerbasketball
Thanks for this thread, PB. Appreciate the explanations of telescope tech that does not fly too far over the head of laymen. Almost can see the sky as vivd as a movie the way you spin it.
Posted on 8/20/21 at 8:29 am to pioneerbasketball
Posted on 8/20/21 at 9:56 am to dakarx
quote:
wonder if it can even be done with a digital SLR or if a crazy long exposure would just saturate the CCD.
Your suspicions are correct, digital sensors are problematic for long exposures, but in fact, digital photography has opened up a whole new world for amateurs with cheap equipment to take amazing images using the proper technique and specialized software. The key is to remove CCD noise by taking dozens or hundreds of images and stack/align them in software to average out the noise. Some of the images you take are dark frames (the lens is covered) so the software can average out the inherent noise of the CCD under the same conditions (i.e., temperature).
This is how the image in the OP was made.
Here's a tutorial that gives you an idea how it works:
https://alphauniverse.com/stories/how-i-captured-the-andromeda-galaxy-with-a-regular-sony-camera-and-zoom-lens/
This post was edited on 8/20/21 at 10:00 am
Posted on 8/20/21 at 10:27 am to TouchedTheAxeIn82
quote:
TouchedTheAxeIn82
Thanks for the info!
Now that's a cool idea to process and layer a ton of stills. I'll have to pick a clear night and drive down around Venice or so to escape the light pollution and try it.
After reading the article you referenced I'm more inclined to build a star tracker rig from my parts bin (got a ton of arduinos, steppers etc..) rather than burn $400+ on a commercial one.
Page 1 of 1
Popular
Back to top
Follow TigerDroppings for LSU Football News