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PHYS.Org : century-old stellar mystery may finally have an explanation
**See also:** The publication in ArXiV https://arxiv.org/abs/2606.30748
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**See also:** The publication in ArXiV https://arxiv.org/abs/2606.30748
#space A
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An Extreme Lucky Imaging Test on M13
I tried out an intense lucky image session to push the core sharpness of M13.
SQA55 telescope
Star Adventurer GTI mount with guiding
ASI533mc camera
Astronomik l-3 UV/IR cut filter
A two minute exposure using the best 40% of 1600 .2s exposures, edited in siril/pixinsight/blurx+noisex/graxpert:
stack at 3.0 drizzle/.3333 droplet in Siril
Split R G B, re-register color channels and recombine
Crop to target
SPCC with exact curves for the ASI533 and Astronomic l-3
Graxpert BGE pass
BlurX at .2 stars 0 nebula
Arcsinh stretch for stars
NoiseX at .7
Reset black level
SCNR, boost saturation curve
Rerun BlurX at .05 stars 0 nebula
Final black level + curves
I've tested it already with my normal full 2minute exposures and got a much larger field but less definition in the core. The lucky version seems to pull out a central sphere of bluer stars. I'm hoping to test a middle ground of 5s exposures next and see whether it's the best of both worlds for detail , or if the core is still better in true lucky imaging and could be masked into the new image.
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source
I tried out an intense lucky image session to push the core sharpness of M13.
SQA55 telescope
Star Adventurer GTI mount with guiding
ASI533mc camera
Astronomik l-3 UV/IR cut filter
A two minute exposure using the best 40% of 1600 .2s exposures, edited in siril/pixinsight/blurx+noisex/graxpert:
stack at 3.0 drizzle/.3333 droplet in Siril
Split R G B, re-register color channels and recombine
Crop to target
SPCC with exact curves for the ASI533 and Astronomic l-3
Graxpert BGE pass
BlurX at .2 stars 0 nebula
Arcsinh stretch for stars
NoiseX at .7
Reset black level
SCNR, boost saturation curve
Rerun BlurX at .05 stars 0 nebula
Final black level + curves
I've tested it already with my normal full 2minute exposures and got a much larger field but less definition in the core. The lucky version seems to pull out a central sphere of bluer stars. I'm hoping to test a middle ground of 5s exposures next and see whether it's the best of both worlds for detail , or if the core is still better in true lucky imaging and could be masked into the new image.
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source
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So, years ago, I remember there was supposed plan for a private space probe that would take human messages on a very long orbit and return them to earth 100,000 years in the future - does anyone remember it?
Google is useless.
Does anyone remember this from the late 2000's early 2010's?
People were allowed to submit short texts that would be carried, should it ever launch.
Ring any bells?
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Google is useless.
Does anyone remember this from the late 2000's early 2010's?
People were allowed to submit short texts that would be carried, should it ever launch.
Ring any bells?
#space
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M31
This photo was obtained by adding 1,700 x 70" ISO 200 lights over 9nights from my garden in city of Rome.
I did not perform any post-production.
The colors were not altered in any way and were obtained with photometric calibration after resolving the image in Siril.
My Setup
Skywatcher StarAdventurer GTI
SkystarEvo 72ED
ZWO EAF Pro Autofocuser
SonyAlpha68 A-Mount 2015 (not modified)
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source
This photo was obtained by adding 1,700 x 70" ISO 200 lights over 9nights from my garden in city of Rome.
I did not perform any post-production.
The colors were not altered in any way and were obtained with photometric calibration after resolving the image in Siril.
My Setup
Skywatcher StarAdventurer GTI
SkystarEvo 72ED
ZWO EAF Pro Autofocuser
SonyAlpha68 A-Mount 2015 (not modified)
#space
source
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ESA is looking at repurposing Gateways lunar link communications module as a dedicated communications asset in lunar orbit.
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Part off the Veil Nebula Complex
First attempt on a part off the Veil Nebula complex between NGC6960 and NGC6979. In the upper right corner a part off NGC6960 and the lower left corner a part off NGC6979.
25 x 300s L-enhance 2h05
SW 150p Quattro modded - CC SW HEQ5 pro belt modded
Player One Ares C - Phoenix Filterwheel 5x2" - 120mm guide scope - ASI120 mm-s guide camera - Pegasus astro PPBAdv 2
N.I.N.A PHD2 PixInsight
processing: BlurX correct Only - BlurX full - SPCC - ADBE - NoiseX - StarX - GHS multiple iterations - Curves - color mask - Dark structure enhance - Rescreen stars - Background neutralization - resample to upload
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First attempt on a part off the Veil Nebula complex between NGC6960 and NGC6979. In the upper right corner a part off NGC6960 and the lower left corner a part off NGC6979.
25 x 300s L-enhance 2h05
SW 150p Quattro modded - CC SW HEQ5 pro belt modded
Player One Ares C - Phoenix Filterwheel 5x2" - 120mm guide scope - ASI120 mm-s guide camera - Pegasus astro PPBAdv 2
N.I.N.A PHD2 PixInsight
processing: BlurX correct Only - BlurX full - SPCC - ADBE - NoiseX - StarX - GHS multiple iterations - Curves - color mask - Dark structure enhance - Rescreen stars - Background neutralization - resample to upload
#space
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How to surf on Saturn’s moon Titan
Lakes of liquid methane on Titan, Saturn’s largest moon, could offer exhilarating—and terrifying—opportunities for otherworldly surfing
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Lakes of liquid methane on Titan, Saturn’s largest moon, could offer exhilarating—and terrifying—opportunities for otherworldly surfing
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