Shutter-Time-Calculator
astrophotography_stack_align
Shutter-Time-Calculator | astrophotography_stack_align | |
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12 | 1 | |
3 | 4 | |
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2.6 | 0.0 | |
4 months ago | over 1 year ago | |
HTML | Jupyter Notebook | |
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Shutter-Time-Calculator
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The Lyrid Meteor Shower (22 April, 2023)
(Online calculator https://calc.loef.photos/ says 20/15/7 seconds max for it's rule of & npf calculations: 500 (major)/300 (slight)/200(pinpoint))
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Understanding Photo Stacking
Without a tracking mount you can use this calculator to determine what exposure time you can get away with without significant trailing. It depends heavily on the declination (basically the arc length between the north pole and the object you are pointed at), lens focal length, and pixel size of your camera.
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Milkyway panorama with Zodiacal light, Captured from Vattakanal, Tamilnadu.
This was a 14mm lens, most will say use 500 rule but I suggest you to use NPF rule if you want pinpoint stars(or it will have an option like slight trailing this is what I used) it showed 12 seconds I think, I went a bit over since I know 14mm is pretty wide and you can't see any trailing once it is wide
- Here's a list of all the fastest lenses ever made, by format and focal length
- M31 135mm?
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1 vs 2500: I couldn't afford an expensive Telescope or a Star Tracker so I took over 2500 shots of the Orion Nebula from a pretty light polluted city in Central India with just an entry level DSLR. Combined them together using a method called "Stacking", and this was the result [OC]
That method isn't that accurate anymore(some people use 400 or even 300 rule), but these days the recommended method is The NPF rule.
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Don't have an expensive Telescope or a Star Tracker? No problem. I couldn't afford them either so I took over 2500 shots of the Orion Nebula from a pretty light polluted city in India with just an entry level DSLR. Combined them together using a method called "Stacking", & this was the result [OC]
4) How to select your exposure length: If you take long duration exposures (let's say) 15-20s or something, what you will see are star trails where instead of pin pointed stars, you'd see them moving in a line, ruining our shot. To get sharper stars, either use the rule of 500 (beginner friendly) or the NPF rule (more accurate, but a bit more advanced). Make sure you take a few test shots, zoom in and check the focus and star trailing first before continuing.
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Please tell me if I’m doing anything wrong with my AP process.
I've made a Calculator some time ago that can help you decide on the expose times without a tracking mount. It might be usefull: https://calc.loef.photos/
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What are the best settings to take a picture with a Canon EOS RP with a 50mm RF lenses?
Seeing might have also been just not good enough. I saw an app called nightshift. Pretty good indications of how clear the sky is actually. Also, indeed have a look at the 'rules'. 500 rule might be a bit too crude. Suggest to check your camera and lens specs and fill them in at: https://calc.loef.photos/
- Open-csource Shutter Time Calculator
astrophotography_stack_align
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Galactic Core
Program: https://github.com/toymil/astrophotography_stack_align Uncompressed image: https://github.com/toymil/astrophotography_stack_align/raw/master/.github/image/_END_RESULT.JPG
What are some alternatives?
OpenAstroTracker - 3D printed DSLR tracking mount
maxvit - [ECCV 2022] Official repository for "MaxViT: Multi-Axis Vision Transformer". SOTA foundation models for classification, detection, segmentation, image quality, and generative modeling...
photo-stream - Self-hosted, super simple photo stream
image-crop-analysis - Code for reproducing our analysis in the paper titled: Image Cropping on Twitter: Fairness Metrics, their Limitations, and the Importance of Representation, Design, and Agency
OpenSkyStacker - Multi-platform stacker for deep-sky astrophotography.
computervision-recipes - Best Practices, code samples, and documentation for Computer Vision.
mmagic - OpenMMLab Multimodal Advanced, Generative, and Intelligent Creation Toolbox. Unlock the magic 🪄: Generative-AI (AIGC), easy-to-use APIs, awsome model zoo, diffusion models, for text-to-image generation, image/video restoration/enhancement, etc.
starreduction - A free and open source tool for star removal in astronomy images. A GAN model implemented in tensorflow and trained to remove stars from astronomical images