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Deep Sky Notes — A visual observer's guide — 18 websites ranked by shared content topics, category and on-page relevance.

Each result shows its full tech stack, contacts and AI-policy — not just a name · Browse all sites in Space And Astronomy →

Domain	Match	Title	Country/Lang	Category	AI files	Contact	AI-protection
deepskygottlieb.com ↗	66 match 1 shared topics	Steve Gottlieb's Deep Sky	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
alienobserver.co.uk ↗	66 match 1 shared topics	Alien observer	GB en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
deepskyinstruments.com ↗	66 match 1 shared topics	Deep Sky Instruments: Home	US~ en	space-and-astronomy	robotsllmsaihumans	emailphone	none
asvo.org.au ↗	66 match 1 shared topics	All-Sky Virtual Observatory (ASVO)	AU en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
deepskyparts.com ↗	65 match 1 shared topics	Home - DEEP SKY PARTS	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
deepskychile.com ↗	65 match 1 shared topics	Deep Sky Chile \| Rent Chilean Sky	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
dirn-observatory.com ↗	64 match 1 shared topics	Home - DIRN Observatory EN	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
harpoint-observatory.com ↗	64 match 1 shared topics	HARPOINT OBSERVATORY (AUSTRIA)	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
baader-observatories.com ↗	64 match 1 shared topics	Baader Observatory Map	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
bastargazer.org ↗	64 match 1 shared topics	Starry Hill Observatory & Planetarium	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
cscaobs.org ↗	64 match 1 shared topics	Home - Marmot Observatory	en	space-and-astronomy WordPress	robotsllmsaihumans	emailphone	none
faulkes-telescope.com ↗	64 match 1 shared topics	\| The Schools' Observatory	en	space-and-astronomy Drupal	robotsllmsaihumans	emailphone	none
dppobservatory.net ↗	64 match 1 shared topics	DPP Observatory	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
deepspaceart.net ↗	64 match 1 shared topics	Deep Space Art	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
lunaticoastropacific.com ↗	64 match 1 shared topics	Lunaticoastro: Advanced Observatory Solutions & Astro Equipment	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
lunaticoastro.com ↗	64 match 1 shared topics	Lunaticoastro: Advanced Observatory Solutions & Astro Equipment	en	space-and-astronomy WordPress WooCommerce	robotsllmsaihumans	emailphone	none
deepskycomet.com ↗	64 match 1 shared topics	Comet Visibility Tracker & News - 3I/ATLAS Updates \| DeepSkyComets	en	space-and-astronomy	robotsllmsaihumans	emailphone	none
cascadiaskies.com ↗	63 match 1 shared topics	Cascadia Skies Remote Telescope Observatory – Space, Astronomy and Observatory	en	space-and-astronomy WordPress	robotsllmsaihumans	email phone	none

How the match score works

Each match is a 0–100 similarity score — the higher it is, the more two sites resemble one another. It’s computed automatically from our own crawl data (never from what a site says about itself) by combining several independent signals, so a high score means several of them point the same way:

shared topics how many of the same fine‑grained content topics (IAB sub‑categories) both sites cover — the main signal.
same category whether they sit in the same business / industry category.
content & title how closely their titles and page descriptions line up in wording and meaning.

No single signal decides the result — they’re blended together. Treat the score as a way to rank candidates rather than an absolute percentage; the chips on each result show which signals contributed.