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6 votes

2 answers

332 views

Do we know at which angle the Event Horizon Telescope will look at the accretion disk of Sagittarius A*?

telescope supermassive-black-hole sagittarius-a galactic-center

Yendor Elrae Enotsnhoj

1

modified May 13 at 12:22

1 vote

1 answer

48 views

Can the Celestron Powerseeker 127EQ observe the moon during day time?

the-moon telescope

uhoh

31.6k

modified May 11 at 1:31

3 votes

2 answers

77 views

Focus Problems when using Barlow 3x or 4mm lens

telescope amateur-observing eyepiece

Kavin Ishwaran

2,382

modified May 9 at 5:33

4 votes

2 answers

389 views

Why are photos from telescope stretched at their edges?

telescope image-processing

uhoh

31.6k

answered May 7 at 11:15

1 vote

0 answers

42 views

Why does my 10mm eyepiece produce blurry images?

telescope amateur-observing eyepiece

fasterthanlight

5,928

modified May 6 at 14:45

9 votes

2 answers

3k views

Why aren't reflector telescopes built with an offset secondary mirror?

telescope

psmears

109

modified May 3 at 18:08

4 votes

1 answer

158 views

General process of calculating what a telescope's diffraction spikes would look like?

telescope optics hubble-telescope james-webb-space-telescope diffraction-spike

CommunityBot

1

modified Apr 17 at 15:08

0 votes

1 answer

181 views

How to make a 65 cm lens with a 20 cm hole in it for a Hamiltonian telescope?

telescope amateur-observing optics telescope-making mirror-making

CommunityBot

1

modified Apr 15 at 4:02

1 vote

0 answers

22 views

uvotdetect sometimes doesn't make valid .fits files for DS9 to read (Swift UVOT, Heasoft)

observational-astronomy telescope data-analysis software fits

Seda

11

asked Apr 14 at 19:57

3 votes

3 answers

327 views

How to choose eyepieces and other accessories for a Celestron 70mm f/5.7 portable refractor?

observational-astronomy telescope space telescope-lens eyepiece

Aaron F

1,488

modified Apr 12 at 23:42

2 votes

0 answers

50 views

Metric to estimate measuring accuracy

observational-astronomy telescope amateur-observing

Saurav Maheshkar

167

modified Apr 4 at 1:11

1 vote

1 answer

135 views

How far can the best telescope see in outer space from Earth?

telescope earth optics

Mintvbz

135

modified Mar 28 at 12:38

9 votes

1 answer

211 views

How to determine the scale on astronomical images?

telescope photography size

Aaron F

1,488

modified Mar 28 at 7:55

6 votes

2 answers

138 views

JWST mirrors each can be "positioned in tip, tilt, piston, horizontal & vertical decentering and clocking". What does this mean?

telescope james-webb-space-telescope adaptive-optics mirror

BradV

418

modified Mar 16 at 15:15

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Explore our Questions

Do we know at which angle the Event Horizon Telescope will look at the accretion disk of Sagittarius A*?

Can the Celestron Powerseeker 127EQ observe the moon during day time?

Focus Problems when using Barlow 3x or 4mm lens

Why are photos from telescope stretched at their edges?

Why does my 10mm eyepiece produce blurry images?

Why aren't reflector telescopes built with an offset secondary mirror?

General process of calculating what a telescope's diffraction spikes would look like?

How to make a 65 cm lens with a 20 cm hole in it for a Hamiltonian telescope?

uvotdetect sometimes doesn't make valid .fits files for DS9 to read (Swift UVOT, Heasoft)

How to choose eyepieces and other accessories for a Celestron 70mm f/5.7 portable refractor?

Metric to estimate measuring accuracy

How far can the best telescope see in outer space from Earth?

How to determine the scale on astronomical images?

JWST mirrors each can be "positioned in tip, tilt, piston, horizontal & vertical decentering and clocking". What does this mean?

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