Skip to content

About page: update survey stats, edit narrative. #6

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
mkelley wants to merge 4 commits into
base: master
Choose a base branch
from
Open

About page: update survey stats, edit narrative. #6

Changes from all commits
Commits
Show all changes
4 commits
Select commit Hold shift + click to select a range
878e16a
Update survey stats for ATLAS, and number of nights for others.
mkelley Jan 16, 2025
33f2b9d
Update ATLAS and CSS counts.
mkelley Jan 19, 2025
a6e8add
Edit about page narrative text.
mkelley Jan 25, 2025
6ffae97
Narrative edits.
mkelley Jan 31, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
108 changes: 58 additions & 50 deletions src/app/components/about-page/about-page.component.html
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -4,25 +4,23 @@ <h2>ABOUT</h2>
<h3>CATCH Overview</h3>

<p>
The Comet-Asteroid Telescopic Catalog Hub (CATCH) is a moving-target search
tool for large astronomical data sets, such as time-domain or near-Earth
object surveys. CATCH solves the needle in the haystack problem: comets and
asteroids are the needles, and the archives of survey data are the
haystacks.
The Comet-Asteroid Telescopic Catalog Hub (CATCH) is a search tool for large
astronomical data sets. It was especially designed to find observations of
moving targets, i.e., comets and asteroids. Use CATCH to help identify
pre-discovery observations of a target, to examine past cometary activity,
or to help you understand why a survey did not detect or report observations
of an object.
</p>

<p>
<em>
Use CATCH to help identify pre-discovery detections, to examine past
cometary activity, or to help you understand why a survey did not detect
or report observations of an object.
CATCH solves the needle in the haystack problem: your favorite comets and
asteroids are the needles, and the archives of survey data are the
haystacks.
</em>
</p>

<p>
Provide the name of an asteroid or comet, and for each indexed data set
CATCH will:
</p>
<p>Provide the name of an asteroid or comet, and CATCH will:</p>
<ol>
<li>
Request an ephemeris for that object from NASA JPL's
Expand All @@ -31,16 +29,26 @@ <h3>CATCH Overview</h3>

<li>Query the CATCH database for data near the ephemeris.</li>

<li>Test each approximate match for detailed intersection.</li>
<li>
Test each approximate match for detailed intersection with the ephemeris.
</li>

<li>Return all positive matches with target and observational metadata.</li>
<li>Return all results with both target and observational metadata.</li>
</ol>

<p>
CATCH can also search for any fixed point on the sky, and up to 2 degrees in
radius about it. Three areal search options are available. Find
observations: (1) that intersect any part of the search area; (2) that are
fully contained within the search area; or, (3) that fully contain the
search area.
</p>

<h3>Capabilities</h3>
<ul>
<li>
Results are presented in the browser, complete with image cutouts around
the query target (when available).
the query target.
</li>

<li>Backed by a <a href="apis">publicly accessible API</a>.</li>
Expand All @@ -63,13 +71,8 @@ <h3>Capabilities</h3>
</li>

<li>
CATCH is designed to have arcsecond-level precision, but identifying
targets may be limited by the astrometric accuracy of survey metadata.
</li>

<li>
Fixed-target (celestial objects) are currently searchable
<a href="apis">via the API</a>.
CATCH is designed to have arcsecond-level precision, but searches will be
limited by the astrometric accuracy of survey metadata.
</li>
</ul>

Expand Down Expand Up @@ -149,9 +152,9 @@ <h2>Data sources</h2>
<tr>
<td>Asteroid Terrestrial-impact Last Alert System (ATLAS)</td>
<td>Haleakala Observatory, Hawaii, USA (T05)</td>
<td><sup>c</sup></td>
<td><sup>c</sup></td>
<td><sup>c</sup></td>
<td>December 2018 &ndash; September 2021<sup>c</sup></td>
<td>848<sup>c</sup></td>
<td>594,688<sup>c</sup></td>
<td>1.86</td>
<td>28</td>
<td>o, c</td>
Expand All @@ -162,9 +165,9 @@ <h2>Data sources</h2>
<tr>
<td>Asteroid Terrestrial-impact Last Alert System (ATLAS)</td>
<td>Mauna Loa Observatory, Hawaii, USA (T08)</td>
<td><sup>c</sup></td>
<td><sup>c</sup></td>
<td><sup>c</sup></td>
<td>December 2018 &ndash; September 2021<sup>c</sup></td>
<td>978<sup>c</sup></td>
<td>741,270<sup>c</sup></td>
<td>1.86</td>
<td>28</td>
<td>o, c</td>
Expand Down Expand Up @@ -204,9 +207,9 @@ <h2>Data sources</h2>
<tr>
<td>Catalina Sky Survey</td>
<td>Mt. Bigelow, Arizona, USA (703, V06)</td>
<td>January 2020 &ndash; October 2024<sup>c</sup></td>
<td>1102<sup>c</sup></td>
<td>1,076,578<sup>c</sup></td>
<td>January 2020 &ndash; December 2024<sup>c</sup></td>
<td>1,085<sup>c</sup></td>
<td>1,149,463<sup>c</sup></td>
<td>2.5 or 3.0 (703), 0.6 (V06)</td>
<td>8.1 or 19.4 (703), 0.03 (V06)</td>
<td>None</td>
Expand All @@ -221,9 +224,9 @@ <h2>Data sources</h2>
<tr>
<td>Catalina Sky Survey</td>
<td>Mt. Lemmon, Arizona, USA (G96, I52)</td>
<td>January 2020 &ndash; December 2022<sup>c</sup></td>
<td>1169<sup>c</sup></td>
<td>1,421,508<sup>c</sup></td>
<td>January 2020 &ndash; December 2024<sup>c</sup></td>
<td>1,154<sup>c</sup></td>
<td>1,493,143<sup>c</sup></td>
<td>1.0 or 1.5 (G96), 1.0 (I51)</td>
<td>1.2 or 5.0 (G96), 0.3 (I52)</td>
<td>None</td>
Expand All @@ -236,10 +239,10 @@ <h2>Data sources</h2>
</td>
</tr>
<tr>
<td>Lowell Observatory Near-Earth Objects Survey (LONEOS)</td>
<td>Lowell Observatory Near-Earth-Object Search (LONEOS)</td>
<td>Lowell Observatory, Anderson Mesa, Arizona, USA (699)</td>
<td>August 2003 &ndash; March 2008</td>
<td>560</td>
<td>522</td>
<td>290,593</td>
<td>2.53</td>
<td>4.1</td>
Expand Down Expand Up @@ -302,7 +305,7 @@ <h2>Data sources</h2>
<td>Pan-STARRS 1 (DR2)</td>
<td>Haleakala Observatory, Hawaii, USA (F51)</td>
<td>June 2009 &ndash; February 2015</td>
<td>1438</td>
<td>1,438</td>
<td>17,558,049<sup>b</sup></td>
<td>0.25<sup>b</sup></td>
<td>24×24<sup>b</sup></td>
Expand Down Expand Up @@ -330,7 +333,7 @@ <h2>Data sources</h2>
<td>SkyMapper Southern Survey (DR4)</td>
<td>Siding Spring Observatory, New South Wales, Australia (413)</td>
<td>March 2014 &ndash; September 2021</td>
<td>1934</td>
<td>1,757</td>
<td>12,630,515</td>
<td>0.5</td>
<td>0.16</td>
Expand Down Expand Up @@ -358,7 +361,7 @@ <h2>Data sources</h2>
<td>Spacewatch 0.9-m Mosaic Camera Survey (v3)</td>
<td>Steward Observatory, Kitt Peak, Tohono O'odham Nation (691)</td>
<td>March 2003 &ndash; December 2016</td>
<td>2413</td>
<td>2,256</td>
<td>1,808,188</td>
<td>1.0</td>
<td>0.35</td>
Expand Down Expand Up @@ -389,7 +392,7 @@ <h2>Data sources</h2>
<tr>
<td colspan="11">
<sup>c</sup>These archives are accumulating data with time. Archive
statistics were updated on 2024 Nov 26.
statistics were updated on 2025 Jan 19.
<a href="https://catch-api.astro.umd.edu/status/sources"
>Current statistics for CATCH holdings</a
>
Expand All @@ -410,7 +413,7 @@ <h3>CATCH Limitations and Caveats</h3>
have observed a target, based on the target's ephemeris. This search also
requires that the ephemeris correctly describes the target's motion on the
sky, and that a potentially matching observation is correctly described by
its metadata. Known issues are given below.
its metadata.
</p>

<h3>Known issues</h3>
Expand All @@ -436,16 +439,17 @@ <h3>Known issues</h3>
</li>

<li>
Owing to some mounting inconsistencies in earlier surveys, the catalog
stars may not be oriented (e.g. may be flipped) with respect to the
displayed fields.
Images may not be correctly displayed in the image preview, which causes a
misalignment with the PanSTARRS catalog overlay. In such cases the image
will generally be flipped with respect to the catalog, even when the image
has an accurate astrometric solution.
</li>
</ol>

<h3>Updates</h3>
<ul>
<li>
v3.0 (2024 Nov 26):
v3.0-beta (2025 Jan 31):
<ul>
<li>New features:</li>
<ul>
Expand All @@ -463,21 +467,25 @@ <h3>Updates</h3>
collections. The ATLAS collections will be continuously updated with
new and previously obtained data.
</li>
<li>Fixed-target (celestial) searches are available via the API.</li>
<li>Date-range searches are available via the API.</li>
<li>Fixed-target (celestial) searches.</li>
<li>Date-range searches.</li>
<li>PanSTARRS DR2 catalog overlay in the image preview area.</li>
</ul>
<li>Other updates:</li>
<ul>
<li>
improved web app responsiveness for large numbers of observations.
Improved web app responsiveness for results with a large number of
observations.
</li>
<li>
Updated Spacewatch 0.9m Mosaic Camera Survey data from v1.0 to v3.0.
</li>
<li>Updated SkyMapper Southern Sky Survey Data Release 2 to 4.</li>
<li>
Updated SkyMapper Southern Sky Survey Data Release from 2 to 4.
</li>
<li>
Updated the size of NEAT cutouts to accommodate images with large
WCS errors.
astrometric errors.
</li>
</ul>
</ul>
Expand Down