Questions tagged [photography]

Questions about photography of celestial objects by amateur or professional astronomers. Questions about photography of other objects are off-topic but might be asked on our sister site Photography Stack Exchange.

25 questions with no upvoted or accepted answers
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Planning to revisit Arthur Eddington's experiment from 1919

As the fateful day draws closer, the United States will host a celestial event that comes once in three generations. I plan to witness this first hand at the exact center of greatest eclipse. In the ...
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366 views

Black spot in Mars' sky

There is a sequence of three raw images by Mars Curiosity Rover taken during Sol 3066 (22/03/2022, roughly) that show the same features of Mars' landscape and sky. They are separated by 38 seconds' ...
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Point spread function image deconvolution

I would like to deconvolve an image of Saturn. I took an image of Saturn: Stack of 50 frames, the angular resolution of the original frames is 1.6''/pixel and the frames are scaled x4 before stacking....
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Is it possible to use something besides emulsion to directly record the image of a nighttime object using a telescope?

The following questions have got me thinking. Is it possible to use Photolithography for telescope image sensor? Fresnel lenses for a makeshift Galilei telescope? Has anyone ever tried to make a ...
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Deciding optical factors between a refractive and reflective space telescope optics as a function of aperture? (visible light)

Reading Yale News' Lighting a path to Planet Nine: To detect objects that are otherwise undetectable, Rice and Laughlin employ a method called “shifting and stacking.” They “shift” images from a ...
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How often are electron-multiplying CCDs used in telescope focal planes? Will Nancy Grace Roman be the first use in a space telescope?

Section I. of The Wide Field Infrared Survey Telescope: 100 Hubbles for the 2020s says: Table 1 summarizes the WFIRST instrument suite, and Figure 1 presents the effective area of the Wide Field ...
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162 views

Where can I download light pollution data?

I'm creating a website with prediction of how good will be a night for astrophotography. I take into account the Moon, clouds, but of course I need light pollution data. Where can I download a light ...
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35 views

Online wide-field star cameras?

Where can I find a large list of online star cameras with wide fields of view? http://www.itelescope.net/all-sky-cameras is one example, but the images are fairly low resolution and there aren't many ...
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How to use DeepSkyStacker to increase detail, reduces noise, and not lose colour?

I had my first attempt at shooting the Orion Nebula and am pleased that I saw it for the first time. Very exciting. I shot 10 frames and then stacked them using DeepSkyStacker which brought out all ...
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What does a narrow-band “point spread function” look like for long exposures from the VLT's large interferometric aperture?

In interferometric radio astronomy UV plots are the first step in understanding what a point spread function (PSF) will look like for a given location in the sky observed over a period of time. The ...
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Longest time after an image was taken when a new solar system body was discovered from it?

This answer to If there's nothing special about Pluto, why was it discovered so early? says: In fact, often objects are discovered to be in pictures from long ago, such as Orcus, discovered in 2004,...
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Why do all the stars near this comet show up as four separate dots in a row?

After seeing this tweet about our not-so-new but at least newly-discovered "mini-moon" I scrolled down and saw the tweeted image below. Since the object is the known short-period comet 114P/Wiseman–...
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Is there any free stacking program that stack images which are not aligned?

I liked to photo deep-sky-objects and planets with my camera Canon sx130. But I have never stacked images because they were too much apart. I was looking for some free astronomy stacking program for ...
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Why can't I use automatic photometry on IRIS?

I'm trying to do photometry on my stacked images of the night sky, but when I use the program IRIS and try to do automatic photometry, it always says it's a wrong image number and in every example of ...
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132 views

Convert RGB pixel value of an image to limiting magnitude

I have taken photos at different exposures from different places of the Orion constellation. I wish to find the effect of skyglow on the limiting magnitude of stars in the Orion constellation. How can ...
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61 views

Amateur astronomy plan for GCSE students

I'm designing an amateur astronomy observational plan for GCSE Astronomy students here in the UK. I would like some advise to the suitability of what I have selected as the content. For the beginner ...
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43 views

How to determine time when a photo of star trails was taken?

I was asked to define a time (most likely the month) and location of the picture below. I hope I understood it right that it is the south pole, because we don't see a Polar star in the middle. ...
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How does speckle imaging fit in to 21st century high resolution imaging from ground based observatories?

Phys.org's Astronomers uncover evidence that there could be many more Earth-sized planets than previously thought references Speckle Observations of TESS Exoplanet Host Stars. II. Stellar Companions ...
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What telescopes used 1000+ pixel Microwave Kinetic Inductance Detectors (MKIDs) for multispectral, single photon counting (time + energy of photons)?

This excellent answer to What would “the next GAIA”-like instrument be like? Could it simply be a 3 to 5x scaled-up version of the same beautiful system? is worth a thorough read-through, but it and ...
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42 views

Not able to get Perfect Focus with DSLR and Newtonian

When using DSLR with Newtonian (130mm/1000mm), I am not able to get perfect focus. However, when I use an eyepiece, I am able to get crystal clear views. So, I think collimation is okay. The focusing ...
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41 views

What produces all of the small radial striations in this very overexposed image of a star by Hubble's WFC2? (the four big ones are from the vanes)

In a recent astrometry question in Space SE I needed to check Proxima Centauri's position and the article contained the image below. I've saturated the colors, cropped it, and added a "...
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184 views

Python interface for DMK 23U274 USB camera for astrophotography

I have access to a monochrome USB camera (DMK 23U274, The Imaging Source) and I'd like to record focal plane images from a small telescope with a python script that would control it by setting ...
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74 views

Are these stars in MASCOT image of Ryugu?

Are these stars in this MASCOT image of Ryugu? Larger image: https://www.sciencealert.com/images/2019-08/processed/RocksOfRyuguStranglyFamiliar_1024.jpg They seem too bright to be stars (if the ...
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51 views

Tracking a heliographic coordinate on CCD

Given the latitude and longitude of a heliographic coordinate, I want to place the point on a CCD image and simulate its motion for a particular duration. Though I am able to track the motion of a ...
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+100

Have avalanche photodiodes been used successfully for precision photometry? If so, in analog (charge integration) mode or just in photon counting?

This excellent answer to What would “the next GAIA”-like instrument be like? Could it simply be a 3 to 5x scaled-up version of the same beautiful system? is worth a thorough read-through, but it and ...