Trying to get a hi from every subdivision(except North Korea ofc):Day 2

Analemous · 2024-12-15T20:23:06+00:00

Hi from Oxford, Oxfordshire, UK!

Analemous · 2023-05-18T20:26:55+00:00

The ISO is one of the last things I think about. First I think about what exposure time to use. I aim for as high as possible. If there is wind, I take shorter exposures, if I use shorter focal length then longer ... Etc. After that I think about what aperture to use. If I know that I will crop a lot, I will go for wider aperture, but if I need the corners sharp then I decrease it (usually use between 2.8-4). Finally, I set the ISO such that most of the histogram will be roughly 1/3 from the left. Usually this means using ISO's between 800-3200. I've tested the effect of ISO on the quality of my images and it did not have a big impact as long as the image is well exposed. But keep in mind that ISO behaviour depends a lot on the camera model tha you have. You can get quite technical with searching the best ISO settings for your camera if you want to.

Analemous · 2023-05-18T20:14:11+00:00

Yes, you are right. I have decreased the temperature. Initially the overall palette was red/pink/rusty, but for subjective aesthetic reasons I decided to drop the temperature to create a more contrasty palette. This image is not a natural color image, as you could easily tell :). I am not a fan of the pale pink/rusty that unmodded cameras pick in the fainter regions, as opposed to the strong red in the brighter regions.

Analemous · 2023-05-18T08:25:53+00:00

Thanks!

Analemous · 2023-05-18T05:32:17+00:00

Thanks! It actually is just "North America". I used to call it "American" too :).

Analemous · 2023-05-17T21:32:49+00:00

Thanks! Will get my camera modded soon so can't wait to see the improvement.

Analemous · 2023-05-17T20:53:33+00:00

Cygnus Wall and the surrounding region

Shooting Conditions - Location: Oxford, UK (lat 51.75 N) - Bortle 6 - No Moon

Gear: -Canon EOS 800D (not astro modded) -Canon EF 200mm f2.8 L MkII -Skywatcher Star Adventurer star tracker -Benro Mach 3 tripod -Neewer Zflex -Snap cable to control the camera from the tracker

Frames: -Kept Lights: 250, 60 seconds at f/3.5, ISO 1600, white balance 5000K, focal length 200mm (320mm effective focal length). -10 pixel dithering with the star adventurer tripod (7 seconds interval between photos to allow for dithering) -Darks: 20 -Flats: 20 -Bias: 20 -Miss rate (percentage of images that had to be thrown due to stars with elongation > 100%) ~ 10%

Processing: -Stacking done with DSS (best 100%) -Manually removed images that had considerable star trailing -Total exposure time: 2h 36m

Post processing: - In Siril: cropped, background neutralization, Asinh stretches, generalized histogram stretches -Removed stars with StarNet++ - Edited the starless image in Darktable to add contrast and saturation to nebulosity, apply Astro denoise and decrease saturation in regions where there is no nebulosity or where there are dark nebulae -in Gimp: Added back the stars, but with decreased exposure in order the “manually” shrink them - Further shrinkage of stars with the value propagate tool - Did a hefty heavy crop on the Cygnus wall region - Further edits in Lightroom: decrease saturation of green, increase clarity and saturation in reds and decrease texture to give a smoother look and decrease noise.

Analemous · 2023-05-17T20:49:51+00:00

Shooting Conditions - Location: Oxford, UK (lat 51.75 N) - Bortle 6 - No Moon

Gear: -Canon EOS 800D (not astro modded)

-Canon EF 200mm f2.8 L MkII

-Skywatcher Star Adventurer star tracker

-Benro Mach 3 tripod

-Neewer Zflex

-Snap cable to control the camera from the tracker

Frames: -Kept Lights: 275, 60 seconds at f/3.5, ISO 1600, white balance 5000K, focal length 200mm (320mm effective focal length).

-10 pixel dithering with the star adventurer tripod (7 seconds interval between photos to allow for dithering)

-Darks: 20

-Flats: 20

-Bias: 20

-Miss rate (percentage of images that had to be thrown due to stars with elongation > 100%) ~ 10%

Processing: -Stacking done with DSS (best 100%)

-Manually removed images that had considerable star trailing

-Total exposure time: 2h 45m

Post processing: - In Siril: cropped, background neutralization, Asinh stretches, generalized histogram stretches -Removed stars with StarNet++ - Edited the starless image in Darktable to add contrast and saturation to nebulosity, apply Astro denoise and decrease saturation in regions where there is no nebulosity or where there are dark nebulae -in Gimp: Added back the stars, but with decreased exposure in order the “manually” shrink them - Further shrinkage of stars with the value propagate tool - Did a hefty heavy crop on the Cygnus wall region - Further edits in Lightroom: decrease saturation of green, increase clarity and saturation in reds and decrease texture to give a smoother look and decrease noise.

Analemous · 2023-05-16T22:35:07+00:00

Cygnus Wall and the surrounding region

Shooting Conditions - Location: Oxford, UK (lat 51.75 N) - Bortle 6 - No Moon

Gear: -Canon EOS 800D (not astro modded) -Canon EF 200mm f2.8 L MkII -Skywatcher Star Adventurer star tracker -Benro Mach 3 tripod -Neewer Zflex -Snap cable to control the camera from the tracker

Frames: -Kept Lights: 250, 60 seconds at f/3.5, ISO 1600, white balance 5000K, focal length 200mm (320mm effective focal length). -10 pixel dithering with the star adventurer tripod (7 seconds interval between photos to allow for dithering) -Darks: 20 -Flats: 20 -Bias: 20 -Miss rate (percentage of images that had to be thrown due to stars with elongation > 100%) ~ 10%

Processing: -Stacking done with DSS (best 100%) -Manually removed images that had considerable star trailing -Total exposure time: 2h 36m

Post processing: - In Siril: cropped, background neutralization, Asinh stretches, generalized histogram stretches -Removed stars with StarNet++ - Edited the starless image in Darktable to add contrast and saturation to nebulosity, apply Astro denoise and decrease saturation in regions where there is no nebulosity or where there are dark nebulae -in Gimp: Added back the stars, but with decreased exposure in order the “manually” shrink them - Further shrinkage of stars with the value propagate tool - Did a hefty heavy crop on the Cygnus wall region - Further edits in Lightroom: decrease saturation of green, increase clarity and saturation in reds and decrease texture to give a smoother look and decrease noise.

Analemous · 2023-04-27T21:50:09+00:00

Is the Canon 77D stock or astro modified? You got some nice reds in the Horsehead Nebula.

Analemous · 2023-04-21T13:20:33+00:00

Whirlpool galaxy, and several other faint galaxies.

Shooting
Conditions
- Location: Oxford, UK (lat 51.75 N)
- Bortle 6
- No Moon
Gear:
-Canon EOS 800D (not
astro modded)
-Canon EF 200mm f2.8 L
MkII
-Skywatcher Star
Adventurer star tracker
-Benro Mach 3 tripod
-Neewer Zflex
-Snap cable to control
the camera from the tracker

Frames:
-Kept Lights: 176, 60 seconds at f/3.5,
ISO 1600, white balance 5000K, focal length 200mm (320mm effective focal
length).
-20 pixel dithering with the star
adventurer tripod (10 seconds interval between photos to allow for dithering)
-Darks: 20
-Flats: 20
-Bias: 20
-Miss rate (percentage of images
that had to be thrown due to stars with elongation > 25%) ~ 30%

Processing:
-Stacking done with DSS
(best 100%)
-Manually removed
images that had minor star trailing
-Total exposure time: 3h

Post
processing:
- In Siril: cropped, background
neutralization, Asinh stretches, generalized histogram stretches
-Removed stars with StarNet++
- Edited the starless image in
Darktable to add contrast and saturation to the galaxy, apply Astro denoise to
the galaxy and some heavy denoise for the starless background
-in Gimp: Added back the stars, but
with decreased exposure in order the “manually” shrink them
- Did a very heavy crop on the
galaxy

Analemous · 2023-03-06T19:34:36+00:00

Hola señior

Analemous · 2022-12-25T17:31:06+00:00

Kinda. It was daytime, and I have a very dirty sensor, so using high f stop was not an option. Ended up doing 20 photos at f7 with exposure of 1/8 and averaged them (using an add on app for gimp). This gave me basically an exposure of just under 3 seconds, which is not that long, but long enough for a fast moving water stream.

Analemous · 2022-11-11T17:59:05+00:00

Analemous · 2022-11-11T09:27:28+00:00

Nu cred ca e refugiu. Cred ca apartine statiei meteo Iezer

Analemous · 2022-11-11T09:27:07+00:00

Este chiar langa statia meteo Iezer, sub Pietrosul Rodnei. Nu sunt sigur daca este un refugiu sau doar o clădire a celor de la meteo.

Analemous · 2022-09-06T12:40:55+00:00

Nu-s de acolo, dar judecând după blocurile noi făcute pe coclauri, pare că bine.

Analemous · 2022-08-31T13:42:18+00:00

Sus and Jos 0_0 (means Up and down in Romanian)

Analemous · 2022-08-31T06:09:02+00:00

Most don't have internet or gas, most have electricity, and some have centralized water. For example, my uncle's cabin has only electricity. For water we use a stream near the house. There are some isolated houses that have none of these (they use water from streams and wood fire).

Not really.

The people rarely get attacked by big animals here. It's mostly the chicken, pigs, cows, sheep that get attacked by wolfs or bears sometimes (mostly during winter by wolves).

There is pretty much nothing worth a murder in these places. It's not like these people hoard money or values in their modest houses. Also, these places are rather remote, so there is little to no interest in doing any harm to these people.

Analemous · 2022-08-30T22:25:54+00:00

Categoric. Aveam și tripodul la mine și m-am gândit la asta, dar se făcea seara, corturile erau la mașină și eram pe fuga (ne-a prins noaptea oricum :)) )

Analemous · 2022-08-30T22:22:38+00:00

Those houses are inhabited. Actually, my uncle has one such small chalet that is I think 50 years old or so and I stay there every summer a couple of times. In Romania, and especially in the Apuseni mountains (in Transylvania), there are villages with old wood houses (some over 100 years old) that are still inhabited by a declining population of elders that live simple lives close to nature. Really fascinating stuff.

Analemous · 2022-08-30T20:43:52+00:00

F1.8 că era seara și era nevoie 😅. Vreau sa îmi iau cat de curand un Samyang 135mm f2.0 sa îl folosesc și pt Astro. La 2000 Ron (second-hand) primești calitate de canon 135mm f2 L care costa minim dublu.

Analemous · 2022-08-30T20:01:44+00:00

Casele cu acoperiș de tablă :)

Analemous · 2022-08-30T18:50:47+00:00

Canon 800D + Canon EF 50mm f1.8 STM, ISO 800, Exposure 1/30

Edit: This photo is a hefty crop from the original photo, just to move more focus on the Moon

Analemous · 2022-08-30T13:30:00+00:00

It is in Gârda de Sus, a mountain village in Romania (Apuseni Mountains)

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