Astro
Elephant’s Trunk nebula in constellation Cepheus is an emission nebula that is about 2400 light years away from us. It is an area of intense star formation and contains many young stars (~100,000 years old). Total exposure for this image is 2.5 hours (30x5 min).
California nebula (NGC1499) from the constellation Perseus. It is about 1000 light years away from us in the Orion arm of the Milky Way. This nebula glows because of intense radiation from a super hot class O star called Menkib.
Total exposure for this photo is about 4.75 hours.
Annular solar eclipse 2023 - first empty nester trip
When we watched the total solar eclipse in 2017, I knew the next one was going to be in April 2024 and was excited about it as it will be visible from close to home. Sometime in 2021, when I read about the Annular eclipse in October 2023, I wanted to go watch it but, thought that it was going to be impossible. October is when schools are back in session and kids activities are going at full throttle. Then it dawned on me that in October 2023, I don’t have to think about all these things as my son will be at college and we will be empty nesters.
A few months ago, we started planning our first empty nester trip. Driving to this event was too far and as we started looking at possible airfares and travel time, San Antonio won over Albuquerque. After taking a 6:10am flight (which meant leaving home at 3:30am), we reached San Antonio by lunch time. After some sumptuous Tex-Mex food at Market Square, we searched for a possible eclipse viewing site for the following day. The long barracks at the Alamo seemed to fit the bill. Nice open area with the proper clearing to view the entire eclipse. Planned to get there early enough to beat the crowds and to allow enough time for setting up the equipment.
On the morning of the eclipse, we decided to have breakfast at the oldest restaurant in San Antonio called Schilo’s. Because of a little snafu with my omelet order, it took a long time for getting our food. I was getting concerned about finding a good spot for viewing but, we reached the Alamo well ahead of time. Just as I got everything setup, the clouds thickened. It looked like all the efforts of making the trip were going to be wasted and we won’t be able to see the eclipse. Thankfully, within 30-40 minutes, the clouds started to break up and although we missed the start of the eclipse, we were able to see it till the end. Some of the early shots with clouds were quite dramatic.
Of course the total annularity was spectacular. It lasted for more than 4 minutes. This is the first time I experienced it and probably will be the only time in my life.
I have posted some composite images of the eclipse earlier and also made a 12 second time-lapse video from images taken over 9 minutes or so around total annularity.
One more nice thing happened during this trip. I got to meet with @pratik in person. He drove down to San Antonio from Austin with his family to meet us for lunch. I have known him for almost 20 years through various interactions/platforms on the internet but had never met him in person.
Overall, the trip worked out nicely. Now I am looking forward to viewing the next Total Solar Eclipse on April 8, 2024.
Trifid nebula (M20) and Lagoon nebula (M8). Really like how the blue color of the reflection nebulosity in Trifid showed up. This is a stack of only 13 two minute exposures. The exposure time is limited because of the trees in the southern sky. Hope to get a couple more clear nights to add to this.
The famous “Pillars of creation” captured from my front yard.
It is an area of intense star forming activity at a distance of 7000 light years. Images from Hubble telescope in the 1990s greatly improved our understanding of star formation process.
This nebula is catalogued as M16 and also known as Eagle nebula or Star Queen nebula.
Last night, it was one of the best Lyme Land Trust public Astronomy nights at Alan’s observatory. Clear skies, cool temps and very little glow. The Milky Way looked spectacular! There were lot more people (25+) and we split the telescopes out in 2 groups. I was with Scott and Jon in the field away from the big telescope. Jon’s mount kept misbehaving so we only used manual telescopes in our area. We could show a good bunch of targets:
- M4 globular cluster in Scorpius
- M8 Lagoon nebula in Sagittarius
- M13 globular cluster in Hercules
- Double star in Ursa Major
- Alberio in Cygnus
- Saturn
Along with the usual crowd of older folks, there were a few younger people who were interested and asking questions. It was a fun night overall. Hope we get more good nights like this.
M51 aka the Whirlpool galaxy along with its companion dwarf galaxy NGC5195. They are at about 24 million light years away and the spiral structure of M51 seems to be affected by its interaction with its smaller partner. This is a stack of 60 one minute long exposures.
Another satellite trail going right through the target I was shooting. I see at least 1 satellite in the frames every night I am out doing astrophotography.
With all the rainy weather, Canadian smoke and short Summer nights, there was no chance to do any astrophotography in last couple of months. Here is an image from April taken as a screenshot while setting up a Venus in Pleiades shot. The spikes are generated by a Bathinov mask and help in focusing.
Mars and the Beehive star cluster (M44) in Cancer, which is one of the closest star clusters to us (at about 600 light years) and it can be seen with naked eyes. All the stars in this cluster are quite young - only ~600 million years of age.
#astro
Needle galaxy and other distant galaxies
The needle galaxy (NGC4565) - perfect edge-on view of a spiral galaxy that is at about 30 light years away.
Captured a couple more galaxies in the same photo. The ones marked with yellow circle (PGC41976, NGC4565C) are at 310 million light years away. The one in red circle (IC3533) is 429 million light years away. This is probably the farthest object I have captured so far.
This image is a stack of sixty 2 minute exposures taken with ZWO ASI533MC-Pro camera attached to William Optics ZS61 telescope.
Supernova SN2023ixf was spotted on May 19th and it continues to brighten. The top image is from May 23rd and an image from April 30th on the bottom. This supernova is in galaxy M101 which is 21 million ly away -> this “live in real-time” event actually happened 21 million years ago.
A face-on spiral galaxy, M101 aka the Pinwheel galaxy is at 21 million light years away in Ursa major and contains about 1 trillion stars. This image is a stack of sixty 2-min exposures.
The Rosette nebula from Monoceros constellation at 5K light years is one of the brightest nebula in the sky. The cluster of young stars (~4mil yrs) in the center provides the energy that makes this cloud glow. As always the streaks of dark dust are the striking features. #astro
Mars visiting Gemini. Open star cluster M35 at the bottom is at 2600 light years away and made up of young stars that are only 100 million years old. At the bottom right, the cluster of yellow stars (NGC2158) is made up of stars that are 10 times older and 6 times farther. #astro
After missing the closest approach yesterday, I was relieved that I caught some break in the clouds to view the Venus and Jupiter conjunction.
The cloud bands added a nice glow to the planets. The Gallelian moons Callisto, Ganymede, and Europa are seen above Jupiter and Io is on the other side.
