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Old 30th December 2022, 01:27   #151
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Re: Rendezvous with The Universe | My Astrophotography Hobby

Admittedly not a great image. But this is me, at night, from our garden, taking an image of the moon and Jupiter just to the right of the moon!

Rendezvous with The Universe | My Astrophotography Hobby-f00c611dfcf4495c8282cd2936b25b88.jpeg

Jeroen
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Old 30th December 2022, 10:23   #152
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Re: Rendezvous with The Universe | My Astrophotography Hobby

Quote:
Originally Posted by graaja View Post
ISS moves too fast for a telescope and will need some sort of tracking to keep it inside the field of view.
Ah, good point. We're not really into photography, so the idea is to just see the ISS more clearly. Will see how it goes. Thanks for all the info!

Quote:
Originally Posted by Jeroen View Post
Looked it up, I was looking at Jupiter which happens to be visible here! Pretty cool!
Looks like all the planets are going to be visible for the next couple of days.

https://economictimes.indiatimes.com...2.cms?from=mdr

https://www.bbc.com/news/science-environment-64082159
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Old 2nd January 2023, 06:17   #153
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Re: Rendezvous with The Universe | My Astrophotography Hobby

Coorg Star Party - 24th to 27th December 2022

Every year, Bangalore Astronomical Society (BAS) organizes star parties in the winter months during the weekend close to new moon. This year, the first event happened from 24th to 27th December.

I attended this event with my daughters. I have written a detailed report on this trip in the below thread.

https://www.team-bhp.com/forum/shift...ery-coorg.html (Coorg Star Party - An Astrophotography / Visual Observation Trip to Talacauvery, Coorg)

For the record in this thread, posting the pictures acquired during this trip.

Note: Click on the pictures to open the full resolution images.

Equipment and Software:

Equipment:
Skywatcher EQ6-R Pro Germal Equatorial Mount
William Optics GT81 Apochromatic Triplet Refractor Telescope
Willam Optics 50mm Guide Scope
ZWO ASI 2600 MC Pro camera
ZWO ASI 224 guide camera
ZWO EAF (Electronic Auto Focuser)
Intel NUC PC with i7 for controlling the equipment

Software:
N.I.N.A for controlling the equipment, plate solving and image acquisition
PixInsight for stacking the images and post processing
Lightroom for final processing

M31 - The Andromeda Galaxy

The Andromeda Galaxy, also known as Messier 31, M31, or NGC 224 and originally the Andromeda Nebula, is a barred spiral galaxy with the radius of about 110,000 light years approximately 2.5 million light-years from Earth and the nearest large galaxy to the Milky Way. Its age is estimated at about 10 billion years. It is the largest galaxy in the local group (a group of galaxies including Milky Way) which includes also the Milky Way, Triangulum and 30 other small galaxies. The Andromeda galaxy is approaching our Milky Way galaxy at a speed of about 110 km/second and will merge with Milky Way in about 4 billion years.

Image Acquisition Details:
Total integration time: 1 hour 40 minutes
Lights: 20 x 300 seconds
Darks: 25
Flats: 25
Location: Talacauvery, Coorg, Karnataka, India
Date: 24th December 2022

Rendezvous with The Universe | My Astrophotography Hobby-andromeda-jpeg-v3.jpg

M81 - Bode Galaxy and M82 - Cigar Galaxy

Bode's Galaxy (the big disc on the right): This galaxy is 11.74 million light years away from earth and 45,000 light years in radius.

Cigar Galaxy (the thin one resembling a cigar on the left): This galaxy is about 11.4 million light years away from earth and is about 18,500 light years in radius.

Image Acquisition Details:
Total integration time: 3 hours 10 minutes
Lights: 38 x 300 seconds
Darks: 25
Flats: 25
Location: Talacauvery, Coorg, Karnataka, India
Date: 24th December 2022

Rendezvous with The Universe | My Astrophotography Hobby-bode-cigar-v5.jpg

IC 405 and IC 410 - The Flaming Star and Tadpoles Nebula

IC410, the Tadpoles Nebula (Top left part of the image) is a dusty emission nebula situated in the constellation Auriga at about 12,000 light years from earth. The gas structures are lit by the radiation from the open star cluster NGC1893 that lies in the center of the nebula. This star cluster is about 4 million years old, but in astronomical terms it is still very young, with hot, massive stars.

IC 405, the Flaming Star Nebula is an emission and reflection nebula in the constellation Auriga north of the celestial equator, surrounding the bluish, irregular variable star AE Aurigae. It shines at magnitude +6.0. It lies at a distance of 1500 light years from earth.

Image Acquisition Details:
Total integration time: 2 hours 5 minutes
Lights: 25 x 300 seconds
Darks: 25
Flats: 25
Location: Talacauvery, Coorg, Karnataka, India
Date: 25th December 2022

Rendezvous with The Universe | My Astrophotography Hobby-tadpole_flamingstar_v1.jpg

When processing pictures of nebulae with very dense star field, it is very difficult to process the details in the structure of the nebulae. For this, we separate the nebulosity and star fields and process them individually and then recombine. Below is the picture of such starless image of the nebula. Notice the intricate details of the dust and gas clouds in the nebulae. In the top left nebula in the image, you can see a couple of small structures resembling tadpoles. This nebula is called tadpole nebula due to these structures. It is also possible to identify the elements that emit the light from these pictures. Blue represents Oxygen, and red represents Hydrogen. Look at the bluish structure in the bottom right nebula, the flaming star nebula. This area is predominantly filled with Oxygen.

Rendezvous with The Universe | My Astrophotography Hobby-tadpole_flamingstar_bxt_nxt_starless.jpg

NGC2264 - Cone Nebula and Christmas Tree Cluster

NGC2264 designates both the Cone Nebula and the Christmas Tree cluster and lies in the constellation Monoceros.

The cone nebula (at the top of the image) resembles a cone and resides in a star forming region. It is a monstrous pillar of cold gas common in large regions of star birth. The cone nebula is 7 light years long and resides at 2500 light years from earth. The Christmas Tree cluster is a large, bright cluster made of about 80 stars of 8th magnitude. The cluster spans 20 light years and lies about 2600 light years from earth. The cluster gets its name due to the resemblance to a christmas tree.

Image Acquisition Details:
Total integration time: 1 hour 50 minutes
Lights: 22 x 300 seconds
Darks: 25
Flats: 25
Location: Talacauvery, Coorg, Karnataka, India
Date: 26th December 2022

Rendezvous with The Universe | My Astrophotography Hobby-christmastree-v3.jpg

NGC2174 - Monkey Head Nebula

NGC2174 named the Monkey Head Nebula is a star forming H-II emission nebula located in the constellation Orion. It is about 6400 light years away from earth. It is an area where new stars are being born at a fierce rate. The stellar winds formed by these stars blows the gas and dust away giving the ape like structure to the nebula.

Image Acquisition Details:
Total integration time: 2 hours 5 minutes
Lights: 25 x 300 seconds
Darks: 25
Flats: 25
Location: Talacauvery, Coorg, Karnataka, India
Date: 26th December 2022

Rendezvous with The Universe | My Astrophotography Hobby-monkeyhead-v2.jpg
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Old 3rd January 2023, 08:05   #154
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Re: Rendezvous with The Universe | My Astrophotography Hobby

I tried taking astro pictures recently while I was in Da Nang, Vietnam. The night sky seemed clear enough to entice me to give it a try. I was damn happy with the results!

Device used - S22 Ultra
App - Samsung Expert Raw
Exposure - 4 minutes
No tripod, placed it on a chair.

What impressed me was how beautifully a mobile phone can capture night sky! Next time will carry tripod as well!
Attached Thumbnails
Rendezvous with The Universe | My Astrophotography Hobby-20221115_21482502.jpg  

Rendezvous with The Universe | My Astrophotography Hobby-20221115_220115.jpg  

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Old 3rd February 2023, 11:31   #155
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Coorg Star Party - 20th to 23rd January 2023

Coorg Star Party - 20th to 23rd January 2023

Bangalore Astronomical Society (BAS) conducted the second star party of this season in Talacauvery, Coorg from 20th to 23rd January 2023. I participated in this event and stayed all the 4 nights and did both astrophotography and visual observation. This time, I had taken my 8" Ritchey Cretien telescope with a native focal length of 1600mm. With a 0.78x focal reducer, the effective focal length is about 1250mm. With this long focal length, it is possible to shoot smaller and farther objects like galaxies. So, the theme of this trip was "Galaxy Hunting"!

A few pictures from the event.

Introduction session.
Rendezvous with The Universe | My Astrophotography Hobby-intro-3.jpg

Astrophotography area.
Rendezvous with The Universe | My Astrophotography Hobby-astrophotography-area.jpg

The team.
Rendezvous with The Universe | My Astrophotography Hobby-group-day2.jpg

I will write in detail about the event in the "Coorg Star Party" thread. Updating this thread with the pictures of the objects, description and exposure details of each object.

Equipment and Software Details

Equipment:
  • Skywatcher EQ6-R Pro mount
  • GSO RC8 scope
  • Astrophysics CCDT67 FR
  • ZWO ASI 2600MC Pro main camera
  • William Optics 50mm guide scope
  • ZWO ASI 224 guide camera
  • Intel NUC Mini PC
  • 100AH LiFePO4 battery pack

Software:
  • N.I.N.A for image acquisition – Framing, plate solving, sequence generator
  • PixInsight - Calibration, stacking, BlurXterminator, SPCC, EzSoftStretch, Histogram, NoiseXTerminator
  • Lightroom for final edits

Below picture shows the equipment used to shoot the objects.
Rendezvous with The Universe | My Astrophotography Hobby-equipment-1.jpg
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Old 3rd February 2023, 11:41   #156
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Re: Coorg Star Party - An Astrophotography / Visual Observation Trip to Talacauvery, Coorg

Note: Click on individual pictures to open the full resolution image

M1 - The Crab Nebula

Rendezvous with The Universe | My Astrophotography Hobby-m1-v4.jpg

The Crab Nebula is a supernova remnant in the constellation Taurus. At the center of the nebula lies the Crab Pulsar, a neutron star 28–30 kilometres across with a spin rate of 30.2 times per second, which emits pulses of radiation from gamma rays to radio waves. The nebula lies about 6500 lightyears from earth, has a radius of about 5.5 light years, and is expanding at a rate of about 1500 kilometers per second.

The Crab Nebula was the first astronomical object recognized as being connected to a supernova explosion. In the early twentieth century, the analysis of early photographs of the nebula taken several years apart revealed that it was expanding. Tracing the expansion back revealed that the nebula must have become visible on Earth about 900 years before. Historical records revealed that a new star bright enough to be seen in the daytime had been recorded in the same part of the sky by Chinese astronomers on 4 July 1054, and probably also by Japanese observers.

In visible light, the Crab Nebula consists of a broadly oval-shaped mass of filaments. The filaments are the remnants of the progenitor star's atmosphere, and consist largely of ionised helium and hydrogen (the prominent red color of the filaments), along with carbon, oxygen, nitrogen, iron, neon and sulfur. The filaments' temperatures are typically between 11,000 and 18,000 degrees, and their densities are about 1,300 particles per cm3.

Date:
23rd January 2023, 10:15PM

Exposure Details:
Total integration of 3:30 hours
Lights - 42 x 300 seconds
Darks – 25
Flats - 25


NGC 1532 and NGC 1531 - Haley's Coronet Galaxy

Rendezvous with The Universe | My Astrophotography Hobby-ngc1532-v1.jpg

NGC 1531 and NGC 1532 are a pair of interacting galaxies located 70 million light years from earth. NGC 1532, the deformed foreground spiral galaxy laced with dust lanes is so close to its companion — NGC 1531, the background galaxy with a bright core just above the centre of NGC 1532 — that it gets distorted. One of its spiral arms is warped and plumes of dust and gas are visible above its disc.

The rectangle marked in picture below shows this distorted spiral arm.
Rendezvous with The Universe | My Astrophotography Hobby-distorted-spiral-arm.jpg

Date:
22nd January 2023, 9:20PM

Exposure Details:
Total integration of 2:00 hours
Lights - 24 x 300 seconds
Darks - 25
Flats – 25

M63 - Sunflower Galaxy

Rendezvous with The Universe | My Astrophotography Hobby-m63-crop-v2.jpg

M63 also known as Sunflower Galaxy is a spiral galaxy in the northern constellation of Canes Venatici. It is located 27 million light years from earth. It has a radius of 49000 light years and is estimated to have 400 billion stars.

Unlike grand-design spiral galaxies, flocculent spiral galaxies do not have well defined spiral arms. Instead, they appear to have many discontinuous arms. M63, is one such flocculent spiral galaxy. Although it only has two arms, many appear to be winding around its yellow core. The arms shine with the radiation from recently formed blue stars and can be more clearly seen in infrared observations. By imaging flocculent spiral galaxies like M63, astronomers hope to gain a better understanding of how stars form in such systems.

Date:
24th January 2023, 2:00AM

Exposure Details:
Total integration of 2:30 hours
Lights - 30 x 300 seconds
Darks - 25
Flats - 25

NGC 4631 and NGC 4656 - Whale and Hockey Stick Galaxies

Rendezvous with The Universe | My Astrophotography Hobby-whale_and_crowbar_v4.jpg

NGC 4631 and NGC 4656 in Coma Berenices were discovered by William Herschel in 1787. NGC 4631, The Whale at top right, is an Sc-type galaxy and one of the largest edge-ons known to us. Its highly irregular shape is due to distortion caused by its companion, the elliptical dwarf NGC 4627 The Pup, riding atop its 'momma's' back. The two are interrelated as evidenced by a bridge of hydrogen gas between them. NGC4631 contains a center starburst which is a region of intense star formation. The strong star formation is evident from the strong emission of hydrogen. This galaxy is situated 30 million light years from earth.

To the bottom left is NGC 4656-4657, two interacting galaxies known collectively as the Crowbar or Hockey Stick. The irregular shape is considered to be due to the interaction between the two galaxies.

Date:
23rd January 2023, 12:30 AM

Exposure Details:
Total integration of 3 hours 25 minutes
Lights - 37 x 300 seconds
Darks - 25
Flats – 25
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Old 3rd February 2023, 11:47   #157
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Re: Coorg Star Party - An Astrophotography / Visual Observation Trip to Talacauvery, Coorg

NGC 4565 – The Needle Galaxy

Rendezvous with The Universe | My Astrophotography Hobby-ngc4565-v1.jpg

NGC 4565 (also known as the Needle Galaxy or Caldwell 38) is an edge-on spiral galaxy about 30 million light-years away in the constellation Coma Berenices. It displays a bright yellowish central bulge that juts out above the dust lanes.

This bright galaxy is one of the most famous examples of an edge-on spiral galaxy, oriented perpendicularly to our line of sight so that we see right into its luminous disc. NGC 4565 has been nicknamed the Needle Galaxy because, when seen in full, it appears as a very narrow streak of light on the sky.

Date:
22nd January 2023, 1:00 AM

Exposure Details:
Total integration of 2 hours 50 minutes
Lights - 34 x 300 seconds
Darks - 25
Flats – 25 

NGC 891 – The Silver Sliver Galaxy

Rendezvous with The Universe | My Astrophotography Hobby-ngc891-v1.jpg

NGC 891 (also known as Caldwell 23, the Silver Sliver Galaxy, and the Outer Limits Galaxy) is an edge-on unbarred spiral galaxy about 30 million light-years away in the constellation Andromeda. It was discovered by William Herschel on October 6, 1784. The galaxy is a member of the NGC 1023 group of galaxies in the Local Supercluster. It has an H II nucleus. The object is visible in small to moderate size telescopes as a faint elongated smear of light with a dust lane visible in larger apertures.

NGC 891 looks as the Milky Way would look like when viewed edge-on (some astronomers have even noted how similar to NGC 891 our galaxy looks as seen from the Southern Hemisphere) and, in fact, both galaxies are considered very similar in terms of luminosity and size; studies of the dynamics of its molecular hydrogen have also proven the likely presence of a central bar. Despite this, recent high-resolution images of its dusty disk show unusual filamentary patterns. These patterns are extending into the halo of the galaxy, away from its galactic disk. Scientists presume that supernova explosions caused this interstellar dust to be thrown out of the galactic disk toward the halo.

The galaxy is a member of a small group of galaxies, sometimes called the NGC 1023 Group. Other galaxies in this group are the NGCs 925, 949, 959, 1003, 1023, and 1058, and the UGCs 1807, 1865 (DDO 19), 2014 (DDO 22), 2023 (DDO 25), 2034 (DDO 24), and 2259. Its outskirts are populated by multiple low-surface brightness, coherent, and vast substructures, like giant streams that loop around the parent galaxy up to distances of approximately 50 kpc (163,000 lightyears). The bulge and the disk are surrounded by a flat and thick cocoon-like stellar structure. These have vertical and radial distances of up to 15 (48000 lightyears) kpc and 40 kpc (130,000 lightyears), respectively, and are interpreted as the remnant of a satellite galaxy disrupted and in the process of being absorbed by NGC 891.

Date:
21st January 2023, 7:45 PM

Exposure Details:
Total integration of 3 hours
Lights - 36 x 300 seconds
Darks - 25
Flats – 25


NGC 4038/4039 Antenna Galaxies

Rendezvous with The Universe | My Astrophotography Hobby-antenna-galaxy-v1.jpg

The Antennae Galaxies (also known as NGC 4038/NGC 4039 or Caldwell 60/Caldwell 61) are a pair of interacting galaxies in the constellation Corvus. They are currently going through a starburst phase, in which the collision of clouds of gas and dust, with entangled magnetic fields, causes rapid star formation. The Antennae Galaxies are undergoing a galactic collision. Located in the NGC 4038 group with five other galaxies, these two galaxies are known as the Antennae Galaxies because the two long tails of stars, gas and dust ejected from the galaxies as a result of the collision resemble an insect's antennae.

About 1.2 billion years ago, the Antennae were two separate galaxies. NGC 4038 was a barred spiral galaxy and NGC 4039 was a spiral galaxy. 900 million years ago, the Antennae began to approach one another, and 600 million years ago, the Antennae passed through each other. 300 million years ago, the Antennae's stars began to be released from both galaxies. Today the two streamers of ejected stars extend far beyond the original galaxies, resulting in the antennae shape. Within 400 million years, the Antennae's nuclei will collide and become a single core with stars, gas, and dust around it. Observations and simulations of colliding galaxies suggest that the Antennae Galaxies will eventually form an elliptical galaxy.

Date:
21st January 2023, 1:45 AM

Exposure Details:
Total integration of 1 hours 35 minutes
Lights - 19 x 300 seconds
Darks - 25
Flats – 25


Abell 1367 Leo Cluster

Rendezvous with The Universe | My Astrophotography Hobby-abell-1367-v1.jpg

The Leo Cluster (Abell 1367) is a galaxy cluster about 330 million light-years distant in the constellation Leo, with at least 70 major galaxies. The galaxy known as NGC 3842 is the brightest member of this cluster. Along with the Coma Cluster, it is one of the two major clusters comprising the Coma Supercluster, which in turn is part of the CfA2 Great Wall, which is hundreds of millions light years long and is one of the largest known structures in the universe.
Most dense galaxy clusters are composed mostly of elliptical galaxies. The Leo Cluster, however, mostly contains spiral galaxies, suggesting that it is much younger than other comparable clusters, such as the Coma Cluster. It is also home to one of the universe's largest known black holes, which lies in the center of NGC 3842. The black hole is 9.7 billion times more massive than the Sun.

Picture below shows NGC3842.

Rendezvous with The Universe | My Astrophotography Hobby-ngc3842.jpg

Date:
21st January 2023, 1:45 AM

Exposure Details:
Total integration of 1 hours 35 minutes
Lights - 19 x 300 seconds
Darks - 25
Flats – 25
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Old 3rd February 2023, 11:55   #158
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Re: Coorg Star Party - An Astrophotography / Visual Observation Trip to Talacauvery, Coorg

NGC 2467 – The Skull and Crossbones Nebula

Rendezvous with The Universe | My Astrophotography Hobby-skull-crossbones-nebula-v1.jpg

NGC 2467, nicknamed the "Skull and Crossbones Nebula", is a star-forming region situated at 4420 light years from earth, whose appearance has occasionally also been likened to that of a colorful mandrill. It includes areas where large clouds of hydrogen gas (hence the red color) incubate new stars. The region is dominated by a massive young star, HD 64315 (marked in picture below), of spectral type O6. Two stellar clusters also exist in the area, Haffner 19 (H19) and Haffner 18 (H18). H19 is a compact cluster containing a Strφmgren sphere which is ionized by a hot B0 V-type star. H18 contains a very young star, FM3060a, that has just come into existence and still surrounded by its birth cocoon of gas. The age of H19 is estimated to be 2 Myr, while the age H18 is somewhat controversial, some considering it to be as young as only 1 Myr.

Picture below shows HD64315 and the Haffner objects.
Rendezvous with The Universe | My Astrophotography Hobby-haffner-objects.jpg

Date:
21st January 2023, 7:45 PM

Exposure Details:
Total integration of 3 hours
Lights - 36 x 300 seconds
Darks - 25
Flats – 25

The Core of Rosette Nebula

Rendezvous with The Universe | My Astrophotography Hobby-rosette-v1.jpg

The Rosette Nebula (also known as Caldwell 49) is an H II region located near one end of a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 or Caldwell 50 (the bright stars in the center of the nebula), is closely associated with the nebulosity, the stars of the cluster having been formed from the nebula's matter.

The cluster and nebula lie at a distance of 5,000 light-years from Earth and measure roughly 130 light years in diameter. The radiation from the young stars excites the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. The mass of the nebula is estimated to be around 10,000 solar masses.

A survey of the nebula with the Chandra X-ray Observatory has revealed the presence of numerous new-born stars inside optical
Rosette Nebula and studded within a dense molecular cloud. Altogether, approximately 2500 young stars lie in this star-forming complex, including the massive O-type stars HD 46223 and HD 46150 (the two bright stars on the top right corner of the center), which are primarily responsible for blowing the ionized bubble. Most of the ongoing star-formation activity is occurring in the dense molecular cloud to the south east of the bubble (bottom left in the above picture).

Date:
20th January 2023, 9:00 PM

Exposure Details:
Total integration of 1 hour 20 minutes
Lights - 16 x 300 seconds
Darks - 25
Flats – 25

Comet C/2022_E3

Rendezvous with The Universe | My Astrophotography Hobby-comet-processing-v1.jpg

C/2022 E3 (ZTF) is a long period comet from the Oort cloud that was discovered by the Zwicky Transient Facility on 2 March 2022. The comet has a bright green glow around its nucleus which is due to the effect of sunlight on its molecules, especially diatomic carbon and cyanogen. The comet reached its perihelion on 12 January 2023, at a distance of 1.11 AU (166 million km), and the closest approach to Earth will be on 1 February 2023, at a distance of 0.28 AU (42 million km). As the comet is going away from the sun, an anti-tail is forming (the faint structure that extends from the nucleus to the top right corner of the picture).

The comet has an orbital period of about 50,000 years, which means when the comet visited our solar system last time, Neanderthals were roaming the earth.

Date:
23rd January 2023, 5:00 AM

Exposure Details:
Total integration of 46 minutes
Lights - 23 x 120 seconds
Darks - 25
Flats – 25

Visual Observation:
Apart from astrophotography, I also did about 5:30 hours of visual observation on the 4th night. Observation report below.

Rendezvous with The Universe | My Astrophotography Hobby-observation-list.jpg

That's all folks, I have on this star party.

I have made several equipment upgrades (list below). Will write in detail about these upgrades in upcoming posts.
  • 8" GSO Ritchey Cretien telescope
  • 100AH LifePO4 battery pack with solar charger
  • Monochrome camera with LRGB and 3nm SHO filters
  • Portable setup with a 51mm refractor and a star tracker
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Old 3rd February 2023, 12:04   #159
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Re: Coorg Star Party - An Astrophotography / Visual Observation Trip to Talacauvery, Coorg

Quote:
Originally Posted by graaja View Post
Comet C/2022_E3
I was hoping you'd post about the Green Comet! How beautiful is that!

Didn't think there would be any chance of seeing it with the naked eye, so didn't try. But what an awesome sight and what a majestic phenomena, thanks for sharing!
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Old 4th February 2023, 17:43   #160
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Re: Rendezvous with The Universe | My Astrophotography Hobby

Wow this is some really detailed stuff with absolutely wonderful images. Thanks for sharing and the detailed explanations of each and every image. I'm not sure what you mean by "Total integration time". Does that mean exposure time? Processing time? Both? If exposure time, a second doubt pops up. If each image takes that long, you can't obviously do all this on one camera in one night, so how exactly are these images captured?

I have two nephews who regularly attend the Coorg location you have mentioned in this thread. You may have even met them, Gaurav and Rohith Kashyap.
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Old 4th February 2023, 19:11   #161
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Re: Rendezvous with The Universe | My Astrophotography Hobby

Quote:
Originally Posted by am1m View Post
Didn't think there would be any chance of seeing it with the naked eye, so didn't try. But what an awesome sight and what a majestic phenomena, thanks for sharing!
Thank you. Though at its brightest, it was at magnitude 5, it is still not a naked eye object. Even from dark skies, one needs binoculars or telescope to view.

Quote:
Originally Posted by Stryker View Post
I'm not sure what you mean by "Total integration time". Does that mean exposure time? Processing time? Both? If exposure time, a second doubt pops up. If each image takes that long, you can't obviously do all this on one camera in one night, so how exactly are these images captured?

I have two nephews who regularly attend the Coorg location you have mentioned in this thread. You may have even met them, Gaurav and Rohith Kashyap.
Thank you for the kind words!

Total integration time is the total of minutes data is collected. It is broken down into multiple smaller frames.

For example:
Total integration of 3 hours
Lights - 36 x 300 seconds

In the above, the total integration is 180 minutes which is made of 36 individual pictures each with an exposure time of 5 minutes (300 seconds).

We use software to integrate all these pictures to make the final image. I have explained this process in an earlier post in this thread.

https://www.team-bhp.com/forum/shift...ml#post5027318 (Rendezvous with The Universe | My Astrophotography Hobby)

Great to know your nephews attend the star parties in Coorg. I may have seen them, but have not been introduced or interacted. Will look out for them when I go to the star party in March.
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