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0 votes

1 answer

28 views

How do I find out when sidereal time was 13:30 on a certain date and location?

James K

104k

answered 22 hours ago

2 votes

1 answer

56 views

Syzygy: ONLY Three Aligned Bodies, or AT LEAST Three Aligned Bodies?

James K

104k

modified yesterday

6 votes

1 answer

140 views

How exactly is UT1 measured/calculated?

terry-s

1,186

modified 2 days ago

7 votes

1 answer

754 views

How do I calculate the moment of the solstice?

Roy Smart

696

modified 2 days ago

2 votes

1 answer

67 views

How (the heck) does an astronomical Celescope work? And how did it get its name?

GrapefruitIsAwesome

1,696

modified Mar 26 at 16:13

7 votes

1 answer

145 views

SKA 101: How will it "perform the most precise tests of Einstein's theories" and Australia & South Africa arrays be "made to work seamlessly together"

DialFrost

2,080

modified Mar 22 at 23:09

4 votes

1 answer

123 views

Why does X-shooter use double passes through prisms for Echelle cross-dispersion instead of gratings?

Keisuke FUJII

131

answered Mar 22 at 18:34

0 votes

1 answer

44 views

2D Galaxy Spectrum taken by long-slit-spectrograph

trynerror

711

modified Mar 22 at 7:35

0 votes

0 answers

14 views

Galactic rotation curves data samples: how to get them?

riemannium

377

asked Mar 20 at 18:07

14 votes

2 answers

3k views

How did asteroid (7482) 1994 PC1 get its "face"? Is it reconstructed from optical or radar imaging, or something else?

CommunityBot

1

modified Mar 17 at 5:39

3 votes

0 answers

59 views

How will China's Xuntian space telescope use its Terahertz capability? THz Spectroscopy? Imaging? Something else?

James K

104k

modified Mar 12 at 14:05

1 vote

1 answer

40 views

What parameters about galaxies can be measured using SAO DS9?

ZaMoC

111

answered Mar 10 at 13:19

11 votes

1 answer

1k views

Did this satellite streak past the Hubble Space Telescope so close that it was out of focus? If so, how close was it?

Peter Erwin

15.7k

modified Mar 6 at 12:39

1 vote

0 answers

40 views

Angular extent of this composite Chandra / JWST image of the Tarantula Nebula?

Bruce Simonson

323

modified Mar 4 at 23:44

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How do I find out when sidereal time was 13:30 on a certain date and location?

Syzygy: ONLY Three Aligned Bodies, or AT LEAST Three Aligned Bodies?

How exactly is UT1 measured/calculated?

How do I calculate the moment of the solstice?

How (the heck) does an astronomical Celescope work? And how did it get its name?

SKA 101: How will it "perform the most precise tests of Einstein's theories" and Australia & South Africa arrays be "made to work seamlessly together"

Why does X-shooter use double passes through prisms for Echelle cross-dispersion instead of gratings?

2D Galaxy Spectrum taken by long-slit-spectrograph

Galactic rotation curves data samples: how to get them?

How did asteroid (7482) 1994 PC1 get its "face"? Is it reconstructed from optical or radar imaging, or something else?

How will China's Xuntian space telescope use its Terahertz capability? THz Spectroscopy? Imaging? Something else?

What parameters about galaxies can be measured using SAO DS9?

Did this satellite streak past the Hubble Space Telescope so close that it was out of focus? If so, how close was it?

Angular extent of this composite Chandra / JWST image of the Tarantula Nebula?

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