Posted on 06/23/2022 1:43:12 PM PDT by MtnClimber
Explanation: Beautiful spiral galaxy NGC 6744 is nearly 175,000 light-years across, larger than our own Milky Way. It lies some 30 million light-years distant in the southern constellation Pavo but appears as only a faint, extended object in small telescopes. We see the disk of the nearby island universe tilted towards our line of sight in this remarkably detailed galaxy portrait, a telescopic view that spans an area about the angular size of a full moon. In it, the giant galaxy's elongated yellowish core is dominated by the light from old, cool stars. Beyond the core, grand spiral arms are filled with young blue star clusters and speckled with pinkish star forming regions. An extended arm sweeps past smaller satellite galaxy NGC 6744A at the lower right. NGC 6744's galactic companion is reminiscent of the Milky Way's satellite galaxy the Large Magellanic Cloud.
Me: Maybe I’m prejudiced toward those beautiful black and white photos taken years ago by the large telescopes.
You: Which were manipulated by in camera processing and film, which was only capable of black and white images. Today’s cameras and image processing are superior in every aspect.
My reply to you: Image capture, enhancement along with editing is becoming an unhealthy substitute to reality. Our personal display devices (phones, tv) are a dangerous “virtual drug”. I exaggerate but this is a cause for concern.
I think you're being overly dramatic. It's not dangerous or unhealthy to take color images. I dunno where that came from.
I can shoot black and white no problem, been there done that. But I choose not to.
Like what I posted at #13, these stars have real color, it's not imaginary or something I intentionally added into the process.
My Canon EOS R6 camera’s LCD screen can see the colors of nebula like the Orion nebula. The actual image captured is better. Full sensor digital cameras (35mm sensor) capture a lot of light. Add a big telescope mirror and even better.
Sample:
https://www.dpreview.com/forums/thread/4517420
-> Resolution is so high that you could see a golf ball from about 15 miles away. <-
Crews at the Department of Energy’s SLAC National Accelerator Laboratory have taken the first 3,200-megapixel digital photos – the largest ever taken in a single shot – with an extraordinary array of imaging sensors that will become the heart and soul of the future camera of Vera C. Rubin Observatory.
The images are so large that it would take 378 4K ultra-high-definition TV screens to display one of them in full size, and their resolution is so high that you could see a golf ball from about 15 miles away.
https://www6.slac.stanford.edu/news/2020-09-08-sensors-world-largest-digital-camera-snap-first-3200-megapixel-images-slac.aspx
Amen.
The only good astrophoto I’ve taken was almost 20 yrs ago, of the Moon thru my (long since sold) Quantum 6 maksutov.
Now that I’m retired and have more time, it seems like there’s always something else getting in the way.
Clear Skies to you! 🙂🔭🔭🔭
“I think you’re being overly dramatic”
Ok, I believe that the various heavenly objects have color. I don’t object to color pictures of them any more.
Our ability to capture, massage and display images with consumer-priced equipment, and throw in narration and acting intended to influence us, well, it’s the new world I guess.
“Full sensor digital cameras (35mm sensor) capture a lot of light”
It’s really about the size of the objective lens or mirror, isn’t it? Size of the objective determines the resolution. F-ratio determines the brightness of the image on the sensor.
If a sensor is an array of separate sensor chips, isn’t that like separate telescopes since the images from the chips must be aligned by postprocessing. Why not just have a separate telescope for each chip because it would probably be cheaper than having all of the chips use one big expensive objective, and in which case the off-axis chips will have distortion?
Must be younger......................
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