Questions tagged [sky-survey]

A sky-survey is a general map or image of a region of the sky which lacks a specific observational target, but this tag also applies to surveys of a given class of objects, (e.g. TESS)

6 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
52 views

Dozens of Oblong Green Objects in Google Sky

In reviewing Google Sky today for the first time, zoomed in at the southern end of the Aquarius constellation, there's dozens of oblong objects, many of which are green. Considering their general ...
2
votes
0answers
43 views

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–...
1
vote
0answers
50 views

How are small objects automatically identified and their locations determined in digital images?

I have a large quantity of old digital images of low energy electron diffraction (LEED) patterns that I must process to identify and locate small, sometimes elongated gaussian-like blobs of a few ...
1
vote
0answers
57 views

Stellar catalogues stars in specific sky regions – without downloading the catalogs

I’m interested, to give a scientific realism to a project I’m working on, in finding a picture of all stars belonging to a star catalogue such as Tycho 2 or Hipparcos for some very specific sky ...
1
vote
0answers
297 views

Sloan Digital Sky Survey (SDSS) HDU `or_mask` - what does it mean exactly?

I'm looking at the Sloan Digital Sky Survey data. I'm primarily using the flux data, from the documentation I see the first extend (HDU 1) has flux, ...
1
vote
0answers
55 views

SDSS ImgCutout webservice returns black image for dr12

The SDSS (Sloan Digital Sky Survey) ImgCutout webservice should return jpeg images for a given field that is defined by the parameters. The service can be tested here: http://skyservice.pha.jhu.edu/...