New answers tagged photography
3
For better astrophotography experience, here are some stratergies I usually if I were to shoot with a cell phone cam.
Capturing images
It starts with your smartphone itself, Your smartphone should be able to shoot at least 1080p and should offer manual settings. Make sure that you shoot images at JPEG (Check your compression rate, it should be in minimum, ...
2
Yes it's workable, but it's not for everyone. I think that you, personally (given the knowledge and experience that you demonstrate on this site), with your expectations appropriately tempered, will get along with it.
First, you want a reasonably-priced telescope which is portable. This limits you to something like the Sky-Watcher Heritage 130p (aka. AWB ...
5
That's normal - but it is not (random) noise.
The more sophisticated method does not only employ stacking of the images (light frames, $I$), but it also corrects for the dark frame (due to sensor noise with identical exposure like the light frame, $D$) and sometimes the bias frames (short duration exposure to capture the read-out noise, $B$). The redish ...
1
Last night after reading more Synphot documentation I came up with this method:
bb = SourceSpectrum.from_vega()
#create the filter with a central waveL of 5500 A and a width of 3000 A on either side
L_filter = SpectralElement(Box1D, amplitude=1, x_0=5500, width=3000)
#plot the filter waveL vs transmission, convert A to nm
L_filter.plot(wavelengths=bb....
3
For the objective of setting exposure times for different targets, it may be easiest to just use the V-filter fluxes you have for the targets, or take the average of the B-, V-, and R-filter target fluxes as a rough guess at the Luminance-filter target flux.
To support this recommendation, I'll try to answer the title question using SYNPHOT.
But first it's ...
3
Absolutely! The Bol’choï Teleskop Azimutal’ny (Large Azimuth Telescope), built by the former USSR in 1979 and the largest telescope in the world from then until the Gemini telescopes were built in 1999—BTA has a diameter of 6 metres—uses an azimuth mount. Obviously, any long-exposure imaging done with it requires a field derotator. Read more about it here.
4
No.
https://www.imdb.com/title/tt0262990/mediaviewer/rm4126849281/
The Sky at Night, 1957.
Space documentaries have existed for longer than "CGI"
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