- Welcome to Orpington Astronomical Society.
Recent posts
#31
Astrophotography / Re: NGC1499 California Nebula ...
Last post by JohnDeathridge - Apr 17, 2024, 17:54:19
#32
Astrophotography / NGC1499 California Nebula in H...
Last post by JohnDeathridge - Apr 17, 2024, 16:49:43NGC 1499 aka California Nebula in HOO. This is an emission nebula located in the constellation Perseus. Its name comes from its resemblance to the outline of the US State of California.
#33
Astrophotography / NGC1499 California Nebula in H...
Last post by JohnDeathridge - Apr 17, 2024, 16:48:13NGC 1499 aka California Nebula in Ha. This is an emission nebula located in the constellation Perseus. Its name comes from its resemblance to the outline of the US State of California.
#34
Astrophotography / Re: Eclipse pictures and timel...
Last post by Dave A - Apr 17, 2024, 15:33:37Roberto,
Great images- I was watching Mazatlan on the internet as the eclipse took place- It must have been amazing to be there in person and experience first hand
Booked for 2027 and 2028 already- crikey !!
Great images- I was watching Mazatlan on the internet as the eclipse took place- It must have been amazing to be there in person and experience first hand
Booked for 2027 and 2028 already- crikey !!
#35
Astrophotography / Re: Eclipse pictures and timel...
Last post by Carole - Apr 17, 2024, 11:14:28Fab images Roberto. Wow already booked for 2027 and 2028.
#36
Astrophotography / Eclipse pictures and timelapse...
Last post by Roberto - Apr 17, 2024, 11:05:55Hello All
We had high clouds in Mazatlan, Mexico but the eclipse was nonetheless spectacular. I have circulated a simple extract from one of my videos and an animation of the Baily's bead formation just after C3 in the WhatsApp chat. Below are some more pictures and a timelapse after working some more on the data.
No stacking and processing can do justice to the real life visual experience.
I had been practising with SharpCap for months to automate my imaging sequence and the software worked flawlessly. The weather didn't cooperate and there was no chance of capturing the solar corona through the high level clouds. Captured a number of bracketed exposures in SER videos starting 20 seconds before C2 all the way to 20 seconds after C3. There were scripted captures also for the partial phases - where the clouds are even more obvious. Totality lasted 4m 18s from the rooftop where we were close to the beach front of Mazatlan.
Note how cloudy it was after C4...
For details see here: https://www.astrobin.com/0ef83r/F/
Partial phases - 1.5ms through Baader solar film
C2 Ring - 0.8ms at 18:07.3
C2 Baily's beads - 0.2ms at 18.07.4
Prominences - between 0.5ms and 5.0ms during totality
C3 Baily's beads - 0.8ms at 18.11.7
C3 Ring - 0.8ms at 18.11.8
All taken through a 92mm refractor working at 491mm EFL and using an ASI2600MC camera on a Sky-Watcher SolarQuest mount.
Timelapse
Diamond Rings Composition
Baily's Beads Composition
Prominences
Totality with some inner Corona
Composition of the above
I may tweak the above as they appear dark in some monitors but I doubt I have much more data to play with. Already booked for 2027 in Egypt and 2028 in Australia!
Roberto
We had high clouds in Mazatlan, Mexico but the eclipse was nonetheless spectacular. I have circulated a simple extract from one of my videos and an animation of the Baily's bead formation just after C3 in the WhatsApp chat. Below are some more pictures and a timelapse after working some more on the data.
No stacking and processing can do justice to the real life visual experience.
I had been practising with SharpCap for months to automate my imaging sequence and the software worked flawlessly. The weather didn't cooperate and there was no chance of capturing the solar corona through the high level clouds. Captured a number of bracketed exposures in SER videos starting 20 seconds before C2 all the way to 20 seconds after C3. There were scripted captures also for the partial phases - where the clouds are even more obvious. Totality lasted 4m 18s from the rooftop where we were close to the beach front of Mazatlan.
Note how cloudy it was after C4...
For details see here: https://www.astrobin.com/0ef83r/F/
Partial phases - 1.5ms through Baader solar film
C2 Ring - 0.8ms at 18:07.3
C2 Baily's beads - 0.2ms at 18.07.4
Prominences - between 0.5ms and 5.0ms during totality
C3 Baily's beads - 0.8ms at 18.11.7
C3 Ring - 0.8ms at 18.11.8
All taken through a 92mm refractor working at 491mm EFL and using an ASI2600MC camera on a Sky-Watcher SolarQuest mount.
Timelapse
Diamond Rings Composition
Baily's Beads Composition
Prominences
Totality with some inner Corona
Composition of the above
I may tweak the above as they appear dark in some monitors but I doubt I have much more data to play with. Already booked for 2027 in Egypt and 2028 in Australia!
Roberto
#37
In the Media... / Winchcombe meteorite's history...
Last post by Rick - Apr 16, 2024, 21:21:43Winchcombe meteorite's history revealed by fresh analysis
She said: "The Winchcombe meteorite is a remarkable piece of space history."
The rock travelled for millions of years before reaching Earth.
Researchers said in its early days the meteorite was an ice-bearing dry rock, but over millions of years ice melted into a ball of mud, which was repeatedly broken apart and reassembled.
Findings suggest it formed from chunks of other rocks cemented together - like broken pieces from multiple jigsaws mashed together - in what is known as breccia.
More: https://www.bbc.co.uk/news/uk-england-gloucestershire-68817230
She said: "The Winchcombe meteorite is a remarkable piece of space history."
The rock travelled for millions of years before reaching Earth.
Researchers said in its early days the meteorite was an ice-bearing dry rock, but over millions of years ice melted into a ball of mud, which was repeatedly broken apart and reassembled.
Findings suggest it formed from chunks of other rocks cemented together - like broken pieces from multiple jigsaws mashed together - in what is known as breccia.
More: https://www.bbc.co.uk/news/uk-england-gloucestershire-68817230
#38
Updates and Upsets / Re: New WordPress version
Last post by Rick - Apr 10, 2024, 09:40:20...and again this morning.
If you see anything strange or broken on the main website, please let me know.
#39
Alerts! Questions? Discussions... / Study sheds light on the white...
Last post by Rick - Apr 09, 2024, 09:31:21Study sheds light on the white dwarf star, likely destroyer of our solar system
Scientists from the University of Warwick and other universities have studied the impact white dwarfs – end-of-state stars that have burned all their fuel – have on planetary systems such as our own solar system.
When asteroids, moons and planets get close to white dwarfs, their huge gravity rips these small planetary bodies into smaller and smaller pieces, which continue to collide, eventually grinding them into dust.
While the researchers said Earth would probably be swallowed by our host star, the sun, before it becomes a white dwarf, the rest of our solar system, including asteroids between Mars and Jupiter, as well as moons of Jupiter, ultimately may be shredded by the sun in a white star form.
More: https://www.theguardian.com/science/2024/apr/09/study-sheds-light-on-the-white-dwarf-star-likely-destroyer-of-our-solar-system
Scientists from the University of Warwick and other universities have studied the impact white dwarfs – end-of-state stars that have burned all their fuel – have on planetary systems such as our own solar system.
When asteroids, moons and planets get close to white dwarfs, their huge gravity rips these small planetary bodies into smaller and smaller pieces, which continue to collide, eventually grinding them into dust.
While the researchers said Earth would probably be swallowed by our host star, the sun, before it becomes a white dwarf, the rest of our solar system, including asteroids between Mars and Jupiter, as well as moons of Jupiter, ultimately may be shredded by the sun in a white star form.
More: https://www.theguardian.com/science/2024/apr/09/study-sheds-light-on-the-white-dwarf-star-likely-destroyer-of-our-solar-system
#40
Alerts! Questions? Discussions... / Starwatch: Exploding nova prom...
Last post by Rick - Apr 08, 2024, 11:42:00Starwatch: Exploding nova promises rare sight in coming months
In the case of T Coronae Borealis, historical observations show that it explodes approximately every 80 years. Astronomers expect it to blow any time between now and September. The chart shows the view looking east from London at about 22.00 BST this week, and marks the location to keep an eye on. When it erupts, the star is expected to reach the same brightness as Alphecca, the brightest star in its home constellation.
More: https://www.theguardian.com/science/2024/apr/08/starwatch-star-nova-t-coronae-borealis-visible
In the case of T Coronae Borealis, historical observations show that it explodes approximately every 80 years. Astronomers expect it to blow any time between now and September. The chart shows the view looking east from London at about 22.00 BST this week, and marks the location to keep an eye on. When it erupts, the star is expected to reach the same brightness as Alphecca, the brightest star in its home constellation.
More: https://www.theguardian.com/science/2024/apr/08/starwatch-star-nova-t-coronae-borealis-visible