celestron.com
Telescopes, Accessories, Outdoor and Scientific Products by Celestron
Last scanned Jul 27, 2026, 8:44 AM
Overall score
Great
Summary
Celestron manufactures telescope parts, optics, binoculars, spotting scopes and digital microscopes serious and amateur astronomers and hobbyists. This website uses Shopify hosted on Cloudflare behind Cloudflare CDN. SEO is good (85/100) and accessibility is excellent (100/100). Security scores good (80/100) and performance good (85/100). Top issue: Title longer than 60 characters.
Celestron
Celestron manufactures telescope parts, optics, binoculars, spotting scopes and digital microscopes serious and amateur astronomers and hobbyists
- Canada
- Hosted on Cloudflare
Top issues to fix
7 issues found · 2 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
TLS certificate expires in 30 days
SecurityRenew soon or enable auto-renewal to avoid a browser-warning outage.
Title longer than 60 characters
SEOShorten the title to under 60 characters so search results don't truncate it.
robots.txt not found
SEOPublish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEOPublish an XML sitemap and reference it from robots.txt to speed up page discovery.
+1 more issue — details in the sections below.
SEO
3 issue(s) found
Performance
11 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Celestron
Celestron manufactures telescope parts, optics, binoculars, spotting scopes and digital microscopes serious and amateur astronomers and hobbyists
Meta tags
- Title
- Telescopes, Accessories, Outdoor and Scientific Products by Celestron
- Description
- Celestron manufactures telescope parts, optics, binoculars, spotting scopes and digital microscopes serious and amateur astronomers and hobbyists
- Canonical
- https://www.celestron.com/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width,initial-scale=1
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- Cloudflare
- CDN provider
- Cloudflare
- IP address
- 23.227.38.65
- ASN
- AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Let's Encrypt
- Subject
- celestron.com
- Valid from
- May 28, 2026
- Valid to
- Aug 26, 2026
- Days until expiry
- 30
- SAN domains
- celestron.com
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyEnabled
- Permissions-PolicyEnabled
Compression: none · 0 cookie(s) observed
Content & assets
Headings
H1 1 · H2 17 · H3 10
Links
123 internal · 9 external · 20 broken
Images
90 total · 0 missing alt
Scripts / Styles
132 scripts · 50 stylesheets
JS / CSS size
1.6 MB · 170 KB
Page size
9.0 KB
Robots.txt & Sitemap
- robots.txt
- Not found
- Disallow rules
- 0
- sitemap.xml
- Not found
- URLs in sitemap
- 0
SEO issues
- Title longer than 60 characters
- robots.txt not found
- sitemap.xml not found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://celestron.com
- Final URL
- https://celestron.com
- HTTP status
- 429
- HTTP version
- HTTP/2
- Response time
- 11 ms
- HTML size
- 9.0 KB
- Redirect chain
- https://celestron.com
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Frequently asked questions
- What technology does celestron.com use?
- celestron.com is built with Shopify, jQuery, Google Analytics, Meta Pixel.
- Is celestron.com secure (HTTPS)?
- Yes. celestron.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 26, 2026.
- Who hosts celestron.com?
- celestron.com is hosted on Cloudflare, behind Cloudflare CDN.
- What is celestron.com's SEO score?
- celestron.com scored 85/100 for SEO in the latest analysis (great).
- What is celestron.com's overall website score?
- celestron.com has an overall SiteGraph score of 87/100, combining SEO, performance, security, and accessibility.
- What company operates celestron.com?
- celestron.com is operated by Celestron. Celestron manufactures telescope parts, optics, binoculars, spotting scopes and digital microscopes serious and amateur astronomers and hobbyists
OpenGraph & Twitter Card
OpenGraph
Twitter Card