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Showing posts with label Canon. Show all posts
Showing posts with label Canon. Show all posts

Saturday, March 3, 2018

Moonset - Galapagos Ecuador Astrophotography

After several days of travel across Ecuador and the Galápagos Islands, most of February was cloudy and rainy — typical for the rainy season. Then one night finally cleared, giving us a rare window for astrophotography.

I went to sleep early and woke up around midnight to photograph a moonset — the moment when the Moon drops below the horizon and the sky gradually becomes darker. This image was captured on Isabela Island, on the beach near the small town of Puerto Villamil (population under 2,000).

The location was convenient: only about 100 meters from the main street, yet dark enough for night-sky work. After a full day of island trips, the short walk mattered. Another practical reason was the wildlife — Galápagos animals are everywhere, and shooting close to town made it easier to stay aware of my surroundings.

Moonset astrophotography over Isabela Island beach in Puerto Villamil, Galapagos, Ecuador
Moonset - Isabela Island, Galapagos, Ecuador Astrophotography

Moonset (not to be confused with sunset) astrophotography from Puerto Villamil, Isabela Island, Galápagos, Ecuador. As the Moon sinks, the sky slowly darkens and more stars begin to appear.

Canon EOS 60Da, Canon EF 16–35mm f/2.8L II USM
10.0 sec · f/2.8 · ISO 6400

Related Galápagos & Equatorial Sky Astrophotography:

Sunday, February 6, 2011

NexStar 4se telescope with T-Adapter-C90 (93635-A) and Canon EOS 40D

How to attach a Canon DSLR to the Celestron NexStar 4SE using the T-Adapter-C90 (93635-A) and a Canon EOS T-Ring — a simple and reliable setup for beginner astrophotography.

The Celestron NexStar 4SE is one of the most popular beginner telescopes for planetary, lunar, solar, and bright nebula photography, making it an excellent first step into real astrophotography. This post shows the exact setup I used to attach my Canon EOS 40D DSLR to the NexStar 4SE using the T-Adapter-C90 (93635-A) and a Canon EOS T-ring. If you’re just beginning telescope astrophotography, this is the first and most important connection you need to learn.


How the DSLR attaches to the NexStar 4SE

The process is simple: the telescope's visual back accepts the T-Adapter-C90, and the Canon EOS T-ring attaches to the adapter. Once the T-ring is locked onto your DSLR, the entire camera becomes the “eyepiece,” letting you capture the Moon, planets, and bright star fields directly through the optical system.

Canon EOS 40D attached to Celestron NexStar 4SE using T-Adapter-C90 (93635-A) and Canon EOS T-ring for prime focus astrophotography
Canon EOS 40D attached to Celestron NexStar 4SE using the T-Adapter-C90 (93635-A) and Canon EOS T-ring


This is the complete physical connection: Telescope → T-Adapter → Canon T-Ring → DSLR. No eyepiece is used during prime-focus astrophotography.

Equipment used

  • Celestron NexStar 4SE Maksutov-Cassegrain telescope
  • T-Adapter-C90 (Celestron 93635-A)
  • T-ring for Canon EOS
  • Canon EOS 40D DSLR camera

Why This Setup Works Well

This configuration enables prime focus astrophotography, where the telescope’s optics act as the camera’s lens. By attaching the Canon EOS 40D directly to the Celestron NexStar 4SE using the T-Adapter and T-Ring, you get a stable, optically efficient setup ideal for bright astronomical targets.

This setup is perfect for photographing objects such as:

  • The Moon (excellent detail and sharp contrast)
  • Jupiter and Saturn (rings, cloud bands, moons)
  • Venus and Mars
  • The Sun — ONLY with a proper solar filter
  • Bright star fields and clusters
  • Bright nebulae (such as the Orion Nebula)

More advanced astrophotographers can later use the NexStar 4SE for certain deep-sky projects with skill and practice, so this telescope can grow with you as you learn. But for beginners, its strongest and most exciting results come from planetary and lunar photography, where the 4SE delivers sharp, detailed images right from the start.

Assembly Series: Connecting a Canon EOS Camera to the Celestron NexStar 4SE

More Celestron 4SE Astrophotography

Tuesday, February 1, 2011

Blue Moon November 21 2010 Celestron 4se Canon 40D

This Blue Moon from November 21, 2010 was photographed in Brooklyn using a Canon 40D and Celestron NexStar 4SE telescope, showing how different white balance settings reveal natural lunar colors.

Color full moon (Blue Moon), photographed with Canon 40D and Celestron NexStar 4SE on November 21, 2010
Color full moon, blue moon, Canon 40D, Celestron 4SE

A blue moon can refer to the third full moon in a season with four full moons. The earliest recorded English usage of the term "blue moon" was in a 1528. In 2010 Blue Moon was November 21.

Equipment Used

  • Canon EOS 40D DSLR
  • Celestron NexStar 4SE Telescope

Color-Enhanced Blue Moon

1. Neutralize the colors (the median of the values of R, G and B is the same).
2. Create two duplicated layers.
3. First layer set as luminosity
4. Saturate the second layer.
5. Make invisible main background layer.
6. Play games with best parameters
So those colors are real, and the only difference is that they've been exaggerated a bit :)


Blue Moon - White Balance: Tungsten light



Blue Moon photographed with Canon 40D and Celestron 4SE using Tungsten white balance
Blue Moon Celestron 4SE Canon 40D Brooklyn Astronomy

White-Black Moon - White Balance: Cloudy, twilight, sunset


White-black Moon captured with Canon 40D and Celestron 4SE using Cloudy, Twilight, Sunset white balance settings
Full Moon Celestron 4SE Canon 40D Brooklyn Astronomy

Yellow-Red Moon - White Balance: Shade

This Blue Moon project remains one of my favorite lunar imaging sessions. Using simple backyard equipment, the Celestron 4SE and Canon 40D can reveal a surprising range of natural lunar colors through different white balance settings.

The Moon Astrophotography Celestron NexStar 4 SE Canon 40D

Moon Astrophotography Celestron NexStar 4 SE Canon
Backyard Astronomy - Astrophotography Celestron - My amateur astro-photos
Celestron Nexstar 4SE - 4 inches telescope 101.6mm
Canon EOS 40D SLR Digital Camera
Canon Live View
The Moon Photos
Blue Moon November 21, 2010 (A blue moon can refer to the third full moon in a season with four full moons).
Music Debussy Suite Bergamasque: Claire De Lune ("Moonlight")


Moon astro-photography.

Photoshop:
Shadow / Highlights
Unsharp Mask
Brightness/Contrast



Moon close-up photographed from Brooklyn using Celestron NexStar 4SE telescope and Canon EOS 40D DSLR.
Celestron 4SE Canon 40D Moon Brooklyn Astronomy Backyard Astrophotography 
Hyginus is a small lunar caldera located at the east end of the Sinus Medii. Its rim is split by a long, linear rille that branches to the northwest and to the east-southeast for a total length of 220 kilometers
Hyginus lunar caldera and branching rille captured with Celestron NexStar 4SE telescope and Canon EOS 40D.
Hyginus is a small lunar caldera located at the east end of the Sinus Medii. Its rim is split by a long, linear rille that branches to the northwest and to the east-southeast for a total length of 220 kilometers. Celestron 4se, Canon 40D, Brooklyn Moon astrophotography 
Between two seas: Mare Tranquillitatis (Latin for Sea of Tranquility) and Mare Serenitatis (the "Sea of Serenity"). Apollo 15 landing at site Hadley–Apennine region.
Lunar region between Mare Tranquillitatis and Mare Serenitatis with Apollo 15 landing site, captured with Celestron 4SE and Canon 40D.
Apollo 15 landing site at Hadley–Apennine region, Mare Serenitatis, Mare Tranquillitatis. Canon 40D, Celestron 4SE, Brooklyn Moon astronomy from backyard

Tycho is a relatively young crater (about 108 million years). This age suggests that the impactor may have been a member of the Baptistina family of asteroids. A larger asteroid from the same family may have been the impactor responsible for creating Chicxulub Crater on Earth 65 million years ago, and causing the extinction of the dinosaurs.
Tycho crater with ray system photographed using Canon EOS 40D and Celestron NexStar 4SE from Brooklyn.
Tycho crater, Brooklyn Moon astronomy from backyard Canon 40D and Celestron 4SE
High-resolution view of Tycho lunar crater captured at a slightly different angle using Celestron NexStar 4SE and Canon EOS 40D.
Moon astrophotography Canon 40D and Celestron 4SE, Tycho crater, Brooklyn Moon astronomy from backyard 

Copernicus is a lunar crater named after the astronomer Nicolaus Copernicus. The crater is located in eastern Oceanus Procellarum. It is estimated to be about 800 million years old. The circular rim has a 30 km wide. The crater rays spread as far as 800 kilometers across the surrounding mare.

Copernicus crater seen from a different illumination angle, photographed with Celestron NexStar 4SE telescope and Canon EOS 40D.
Copernicus crater, Astronomy from Brooklyn backyard Canon 40D and Celestron 4SE
Copernicus lunar crater and ray system photographed with Celestron NexStar 4SE and Canon EOS 40D from backyard astronomy setup.
Celestron 4SE Moon Copernicus crater,  Brooklyn backyard Astronomy 

Related Astrophotography Posts

Monday, January 31, 2011

Backyard Astronomy - Astrophotography Celestron NexStar 4se

Backyard Astronomy - Astrophotography Celestron
NexStar 4se telescope
Canon EOS 40D and T-Adapter-C90 and Barlow T-Adapter 1 1/4 inches and T-ring for Canon EOS
Celestron 4se telescope with T-Adapter-C90 (93635-A) and Canon EOS 40D
Celestron 4se telescope with Barlow t-Adapter 1 1/4 inches (93640) and Canon EOS 40D
Celestron 4se with Barlow t-Adapter 1 1/4 inches (93640), Erect Image Diagonal (94116) and Canon EOS 40D
Photos of the Moon and the Sun
Celestron NexStar 4se telescope NexImage CCD
Jupiter photos
Piggy-Back Camera Mount for Celestron NexStar 4 telescope (Item# BRKTPIG4)
The Green Comet 103P/Hartley 2 (2010)
 


Moon Celestron 4SE Canon 40D Astronomy Brooklyn Astrophotography

Comet 103P/Hartley 2 from New York City

From the public, his discovery brought cheers. 
From his wife, it drew nothing but torrents of tears. 
"For you see," said Ms. Halley, 
"He used to come daily; 
Now he comes once every 70 years!" 

--Astronomy Jokes

In October 2010, the bright green comet 103P/Hartley 2 passed relatively close to Earth, offering a rare opportunity for urban astrophotography. This series was captured from Brooklyn, New York City — under heavy light pollution — using a piggyback DSLR setup mounted on a Celestron NexStar 4SE.

Despite the challenges of NYC skies, stacking multiple exposures revealed the comet’s distinct green coma, caused by glowing diatomic carbon (C₂) molecules in its atmosphere.

Image 1: Stacked result showing the comet within the surrounding star field.


Comet 103P Hartley 2 wide field image from Brooklyn NYC Canon 40D Celestron 4SE

Image 2: Closer crop revealing the bright coma.

Comet 103P Hartley 2 zoomed view green coma Brooklyn NYC astrophotography

Image 3: Maximum zoom view highlighting the comet nucleus region and surrounding glow.

Close-up of Comet 103P Hartley 2 green coma stacked DSLR image
Comet Hartley 2, Celestron 4SE Canon 40D Brooklyn

Capture Details

Object: Comet 103P/Hartley 2 (The Green Comet)
Date: October 12, 2010
Location: Brooklyn, NYC
Camera: Canon 40D
Mount: Piggybacked on Celestron NexStar 4SE
Lens: Canon EF 28–135mm f/3.5–5.6 IS USM
Focal Length: 28mm
Exposure: 27 × 60 seconds
ISO: 1250
White Balance: Daylight
Total Integration Time: 27 minutes

Processing Workflow

Urban light pollution required careful processing:

  • Stacking performed in DeepSkyStacker
  • Light pollution reduction using Photoshop (Median Noise Filter + Gaussian Blur)
  • Final contrast and color adjustments in Photoshop

The embedded video below demonstrates the light pollution removal process and stacking workflow.

For techniques on reducing light pollution, see Removing Light Pollution in Urban Astrophotography, where I demonstrate advanced processing from Golden Gate Bridge skies.

Piggyback Setup – Behind the Scenes

The following images were taken during daytime and show the full piggyback configuration used for capturing Comet 103P/Hartley 2 from Brooklyn.

The Canon 40D DSLR was mounted on top of the Celestron NexStar 4SE telescope using a dedicated piggyback bracket (Item #BRKTPIG4). This configuration allows the telescope mount to track the sky while the DSLR captures wide-field images.


Canon 40D piggyback setup on Celestron NexStar 4SE daytime Brooklyn NYC
Brooklyn Astrophotography, Celestron 4SE PiggyBack, NYC Astronomy
Canon camera mounted on top of Celestron telescope piggyback bracket
PiggyBack Camera Mount for Celestron NexStar 4SE (Item# BRKTPIG4), Comet Photo Setup, Brooklyn NYC Astrophotography
Close-up of BRKTPIG4 piggyback bracket connecting Canon DSLR to NexStar 4SE
NYC Astrophotography, Celestron 4SE
Front view of Canon 40D mounted on Celestron 4SE telescope NYC astrophotography
Celestron 4SE and Canon 40D - NYC Astrophotography

Urban Comet Imaging – A Challenge Worth Taking

Capturing a comet from New York City is always a technical challenge. High skyglow, limited visibility, and atmospheric haze make faint objects difficult to detect. However, with careful stacking and processing, even a suburban or urban observer can document transient celestial visitors.

Comet 103P/Hartley 2 was especially memorable because it was visited by NASA’s EPOXI spacecraft during its 2010 flyby — making backyard imaging even more exciting.

Comets Over New York City – 14 Years Apart

Urban comet imaging has always been one of the most challenging and rewarding forms of astrophotography. Fourteen years after capturing Comet 103P/Hartley 2 from Brooklyn, I photographed another bright visitor over New York City — Comet C/2023 A3 (Tsuchinshan–ATLAS) visible in NYC .

The contrast between these two comet encounters is striking. In 2010, Comet 103P/Hartley 2 was faint and not visible to the naked eye from New York City. Its position had to be calculated using ephemerides, and a wide-field piggyback setup was required to locate and capture it through stacked exposures.

By comparison, Comet C/2023 A3 (Tsuchinshan–ATLAS) was significantly brighter and easily visible without optical aid. Using a more modern Canon EOS Ra, a much simpler imaging approach was possible — sometimes the sky itself provides the spectacle without the need for complex techniques.

Together, these two comets illustrate different faces of urban comet photography: one a technical challenge requiring precision and persistence, the other a rare and unforgettable naked-eye visitor over the New York skyline.

Related Astrophotography Posts

Sunday, January 30, 2011

Celestron NexStar 4SE Canon 40D Live View Sun astrophotography

This video demonstrates how Live View on the Canon EOS 40D can be used for basic solar astrophotography when connected to the Celestron NexStar 4SE telescope. It was recorded on October 2, 2010 in Brooklyn, New York.

The main goal of this experiment was to show how Live View helps with focusing, framing, and exposure control when photographing the Sun. At the time, Live View was still relatively new on DSLR cameras, and this setup made solar imaging much easier than using only the optical viewfinder.

IMPORTANT: The Sun was photographed only with a proper full-aperture solar filter. Never point a telescope or camera at the Sun without a certified solar filter. Permanent eye and equipment damage can occur instantly.

The video includes images and footage from the following assembly series, showing different ways to connect a Canon EOS camera to the Celestron NexStar 4SE. The links below lead to the original photo posts for reference.

After the mechanical setup, the video shows the Canon Live View feed on a computer using Canon’s software, allowing real-time monitoring of what the camera sensor sees. This makes it much easier to achieve accurate focus and capture surface detail.


Celestron solar filter mounted on a Celestron NexStar 4SE telescope for safe solar astrophotography
Celestron Solar Filter for NexStar 4 SE and Celestron 4SE, Brooklyn NYC Astronomy

The image above shows the solar filter mounted on the NexStar 4SE. This is the most critical component for solar imaging and must always be installed before pointing the telescope toward the Sun.

Canon EOS 40D DSLR camera connected to a Celestron NexStar 4SE telescope for solar imaging
Astrophotography NYC - Celestron 4SE and Canon 40D

This photo shows the full imaging setup with the Canon 40D attached to the NexStar 4SE. Live View allows precise focusing without touching the telescope, minimizing vibration.


Close-up view of Sun with sunspot group 1109 captured through a Celestron NexStar 4SE telescope
Sunspot - Solar Activity - Celestron 4SE -Brooklyn Astrophotography

The final image shows a close-up of the Sun with sunspot group 1109. Only a portion of the solar disk is visible — this framing was intentional to better reveal sunspot structure and surrounding bright regions.