lefty7283

small [OM SYSTEM OM-1 mk ii | 17mm f1.2 | 10s ISO 8000]

1d 12h ago in astrophotography from lemmy.dbzer0.com

Edge of the frame. Since stars are point sources of light any distortion from the optics, trailing from a long exposure, or even the atmosphere will distort them. IMO the center stars are what I’d consider acceptable for an untracked image, but then again I don’t really do much widefield astrophotography. It could also be your camera shifted slightly or from walking around near it?

There’s a number of YouTube channels of varying quality/expertise that are good for beginners, like AstroBackyard, Alaskan astro, cuiv the lazy geek to name a few. The cloudynights forum should If your a discord person, we do have one for this community (.gg/astrophotography) that’s pretty active with a lot of info that’s been gathered over the years, and it’s where I’ve learned most of what I know about the hobby.

Looks great for a first shot! If you took a couple more exposures you could stack them and use dark frames to help with the hot pixels. Also if you ever get a star tracker you could stop the lens down slightly to help with the distorted stars on the edges, but overall it looks pretty decent

How long of an exposure was this?

M92 - The other globular cluster in Hercules

4d 13h ago in astrophotography

I've finally moved away from my bortle 9 balcony! Only had one clear night so far and used it to map out my horizons, (a considerable improvement from the balcony) and spend a few hours on something bright and high up in the sky. Still got a huge ass-backlog of pics from the old place to process, but I'll chip away at that eventually. Captured on June 11th, 2026 from a Bortle 6 zone.

Places where I host my other images:

Flickr | Pixelfed

Equipment:

  • TPO 6" F/4 Imaging Newtonian

  • Orion Sirius EQ-G

  • ZWO ASI1600MM-Pro

  • Skywatcher Quattro Coma Corrector

  • ZWO EFW 8x1.25"/31mm

  • Astronomik LRGB+CLS Filters- 31mm

  • Astrodon 31mm Ha 5nm, Oiii 3nm, Sii 5nm

  • Agena 50mm Deluxe Straight-Through Guide Scope

  • ZWO ASI-290mc for guiding

  • Moonlite Autofocuser

Acquisition: 3 hours 2 minutes (Camera at half unity gain, -15°C)

  • L - 37x120"

  • R - 18x120"

  • G - 18x120"

  • B - 18x120"

  • Darks- 30

  • Flats- 30 per filter

Capture Software:

  • Captured using N.I.N.A. and PHD2 for guiding and dithering.

PixInsight Preprocessing:

  • BatchPreProcessing

  • StarAlignment

  • Blink

  • ImageIntegration per channel

  • DrizzleIntegration (2x, Var β=1.5)

  • Dynamic Crop

  • Multiscale Gradient Correction with MARS Project data

Luminance linear:

  • BlurXterminator (correct only)

  • ArcsinhStretch + HistogramTransformation to stretch nonlinear

RGB Linear:

  • Channelcombination to make color image from RGB stacks

  • SpectrophotometricColorCalibration

  • BlurXTerminator (correct only)

  • HSV Repair

  • ArcsinhStretch + HistogramTransformation to stretch nonlinear

  • Slight curves saturation boost and histogram adjustments

Nonlinear Processing

  • LRGBCombination to combine stretched RGB and L images

  • DeepSNR Noise reduction

  • Shitloads of curve transformations to adjust luminance, contrast, saturation, etc

  • NoiseXterminator for chrominance noise reduction

  • Invert > SCNR (masked) > Invert to remove this one very magenta colored star

  • More curves

  • Dynamic crop in on just the cluster

  • Resample to 75%

  • DynamicCrop in on just the galaxy

  • Annotation

Worlds we landed across the Solar System

4d 16h ago in space@mander.xyz from i.redd.it

Good ol’ lithobraking

One bean, one braincell

6d 13h ago in oneorangebraincell

Proton has respond on reddit

8d 12h ago in privacy@programming.dev from lemmy.ml

https://lemmy.world/post/47908059

Haumea approach

12d 2h ago in ksp

Me_irl

15d 14h ago in me_irl from lemmy.radio

No hobby is safe

RIP LC-36

20d 1m ago in spaceflightmemes@sh.itjust.works

It's kinda amazing that wojack/soyjack and pepe memes have endured as long as they have, rage faces were already on their way out when they were this old

29d 14h ago in showerthoughts

We're inching closer to the Steam Frame release with a SteamOS Manager update

1mon 2d ago in steamdeck@sopuli.xyz from www.gamingonlinux.com

Upgraded to the beyond 2e from my reverb G2 and I absolutely love it! Had to go through a couple different face plates since my eyelashes were touching the lenses, but their support was really good about getting a replacement/new face scan.

Imo the weakest area is the audio strap, especially coming from the G2 which has identical speakers to the index, but in the future I’ll probably look into the project beyondex strap to get the index speakers working with it

TIL Inflammation Causes Cartilage Loss

1mon 4d ago in til from pmc.ncbi.nlm.nih.gov

Had the chance to do cadaver dissections and synovial fluid is some fascinating stuff! Slightly mucusy, but incredibly slick

M63 - The Sunflower Galaxy

1mon 23d ago in astrophotography

KSP beat its all time concurrent player record today!

2mon 7d ago in ksp

RIP ESM

2mon 8d ago in spaceflightmemes@sh.itjust.works

Earthset from Artemis II

2mon 11d ago in space@mander.xyz

NGC 2403 in HaLRGB

2mon 22d ago in astrophotography

NGC 1333 - The Embryo Nebula

2mon 26d ago in astrophotography