# Optics Spec Price Index

> The Optics Spec Price Index carries 5 published figures read from 3 sources' own pages, from 699 to 1,999 USD, read 12 October 2026.

TelescopeCompareHQ · https://telescopecomparehq.com/datasets/optics-spec-price-index/ · computed 2026-10-19

**Range of the published figures:** 699 to 1,999 USD (range 699 to 1,999 USD; 5 published figures; 3 of 24 sources read publish one).

3 of the 24 named sources read in full publish a figure; 21 publish none, read 12 October 2026.

## By model

| Breakdown | Median | Range | Sources |
|---|---|---|---|
| model ZWO Seestar S30 Pro | 699 USD | 699 to 699 USD | 1 |
| model ZWO Seestar S30 Pro Total Solar Eclipse Edition | 799 USD | 799 to 799 USD | 1 |
| model ZWO Seestar S50 Pro | 899 USD | 899 to 899 USD | 1 |
| model Swarovski EL 8.5x42 | 1,999 USD | 1,999 to 1,999 USD | 1 |
| model Swarovski EL 10x42 | 1,999 USD | 1,999 to 1,999 USD | 1 |

## Every figure, with its source

One row per source: the figure the source's own page publishes, the page, and the day it was read.

| Source | Figure | Breakdown | Read |
|---|---|---|---|
| [Swarovski EL 10x42](https://www.swarovskioptik.com/us/en/hunting/products/binoculars/el/el-42/el-10x42) | 1,999 USD | Swarovski EL 8.5x42 | 2026-10-12 |
| [Swarovski EL 10x42](https://www.swarovskioptik.com/us/en/hunting/products/binoculars/el/el-42/el-10x42) | 1,999 USD | Swarovski EL 10x42 | 2026-10-12 |
| [ZWO Seestar S30](https://www.zwoastro.com/product/seestar-s30-smart-telescope/) | 899 USD | ZWO Seestar S50 Pro | 2026-10-12 |
| [ZWO Seestar S50](https://www.zwoastro.com/product/seestar-s50/) | 799 USD | ZWO Seestar S30 Pro Total Solar Eclipse Edition | 2026-10-12 |
| [ZWO Seestar S50](https://www.zwoastro.com/product/seestar-s50/) | 699 USD | ZWO Seestar S30 Pro | 2026-10-12 |

## The sentence each figure was read from (5)

- [Swarovski EL 10x42](https://www.swarovskioptik.com/us/en/hunting/products/binoculars/el/el-42/el-10x42), read 2026-10-12: "Price from $1,999"
- [Swarovski EL 10x42](https://www.swarovskioptik.com/us/en/hunting/products/binoculars/el/el-42/el-10x42), read 2026-10-12: "Price from $1,999 EL 10x42"
- [ZWO Seestar S30](https://www.zwoastro.com/product/seestar-s30-smart-telescope/), read 2026-10-12: "Price range: $899.00 through $998.00"
- [ZWO Seestar S50](https://www.zwoastro.com/product/seestar-s50/), read 2026-10-12: "Price range: $799.00 through $988.00"
- [ZWO Seestar S50](https://www.zwoastro.com/product/seestar-s50/), read 2026-10-12: "Price range: $699.00 through $888.00"

## Read in full, publishes no figure

- [Celestron NexStar 8SE](https://www.celestron.com/products/nexstar-8se-computerized-telescope), read 2026-10-12: every candidate on the page was refused
- [Celestron Advanced VX 8 SCT](https://www.celestron.com/products/advanced-vx-8-schmidt-cassegrain-telescope), read 2026-10-12: every candidate on the page was refused
- [Celestron Origin intelligent home observatory](https://www.celestron.com/products/celestron-origin-intelligent-home-observatory), read 2026-10-12: every candidate on the page was refused
- [Celestron Nature DX 10x42](https://www.celestron.com/products/nature-dx-10x42mm-roof-binoculars), read 2026-10-12: every candidate on the page was refused
- [Celestron Ultima 10x42 porro](https://www.celestron.com/products/ultima-10x42mm-porro-binocular), read 2026-10-12: every candidate on the page was refused
- [Celestron X-Cel LX 3x Barlow](https://www.celestron.com/products/x-cel-lx-3x-barlow-lens-125in), read 2026-10-12: every candidate on the page was refused
- [Celestron Luminos 31mm eyepiece](https://www.celestron.com/products/luminos-31mm-eyepiece-2in), read 2026-10-12: every candidate on the page was refused
- [Sky-Watcher Flextube 250P collapsible Dobsonian](https://www.skywatcherusa.com/products/sky-watcher-flextube-250p), read 2026-10-12: every candidate on the page was refused
- [Sky-Watcher Classic 250P Dobsonian](https://www.skywatcherusa.com/products/sky-watcher-classic-250p), read 2026-10-12: every candidate on the page was refused
- [Explore Scientific 10-inch Dobsonian](https://explorescientific.com/products/10-inch-dobsonian-reflector-telescope), read 2026-10-12: every candidate on the page was refused
- [Bresser Dobsonian telescopes](https://www.bresser.com/astronomy/telescopes/dobsonian-telescopes/), read 2026-10-12: every candidate on the page was refused
- [Bresser Corvette 8x42 binoculars](https://www.bresser.com/p/bresser-corvette-8x42-binoculars-nitrogen-purged-1440843), read 2026-10-12: every candidate on the page was refused
- [DWARFLAB DWARF 3](https://www.dwarflab.com/us/products/dwarf-3-smart-telescope), read 2026-10-12: read in full and no accepted figure on the page
- [Vaonis Vespera Pro](https://vaonis.com/vespera-pro), read 2026-10-12: read in full and no accepted figure on the page
- [Unistellar official store](https://shop.unistellar.com/), read 2026-09-12: read in full and no accepted figure on the page
- [Vortex Diamondback HD 10x42](https://vortexoptics.com/vortex-diamondback-hd-10x42-binocular.html), read 2026-10-12: read in full and no accepted figure on the page
- [Steiner Predator 10x42](https://www.steiner-optics.com/products/predator-10x42), read 2026-10-12: read in full and no accepted figure on the page
- [Tele Vue eyepieces](https://www.televue.com/engine/TV3b_page.asp?id=50), read 2026-09-12: read in full and no accepted figure on the page
- [Tele Vue telescopes](https://www.televue.com/engine/TV3b_page.asp?id=1), read 2026-09-12: read in full and no accepted figure on the page
- [William Optics telescopes](https://williamoptics.com/collections/telescopes), read 2026-09-12: every candidate on the page was refused
- [Baader filters](https://www.baader-planetarium.com/en/filters/), read 2026-10-12: read in full and no accepted figure on the page

## Methodology

Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2). 3 of the 24 named sources that could be read published a usable figure; 21 published none and are recorded as not published, never filled in; 1 could not be read (blocked, dead or unreachable) and count nowhere. The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source for each breakdown it prices, in USD (a source's median where its page yielded several accepted sentences for one breakdown), so a page that gives figures for several breakdowns gives one for each and N counts 5 figures, never sentences; 108 candidate sentence(s) were refused by a reviewer with the reason recorded. The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): one row per model: aperture, focal length, focal ratio, mount type, weight, supplied eyepieces and the maker's own price - and over the rows the figures no maker publishes: cost per millimetre of aperture by optical design, the aperture-price frontier (the largest aperture available at each price point, by design and by brand), the magnification and true field of view for every telescope x eyepiece pair in the index, and the share of models whose maker publishes a price at all.

## Sources

- [Celestron NexStar 8SE](https://www.celestron.com/products/nexstar-8se-computerized-telescope) (the publisher's own terms; quoted for reporting and comment)
- [Celestron Advanced VX 8 SCT](https://www.celestron.com/products/advanced-vx-8-schmidt-cassegrain-telescope) (the publisher's own terms; quoted for reporting and comment)
- [Celestron Origin intelligent home observatory](https://www.celestron.com/products/celestron-origin-intelligent-home-observatory) (the publisher's own terms; quoted for reporting and comment)
- [Celestron Nature DX 10x42](https://www.celestron.com/products/nature-dx-10x42mm-roof-binoculars) (the publisher's own terms; quoted for reporting and comment)
- [Celestron Ultima 10x42 porro](https://www.celestron.com/products/ultima-10x42mm-porro-binocular) (the publisher's own terms; quoted for reporting and comment)
- [Celestron X-Cel LX 3x Barlow](https://www.celestron.com/products/x-cel-lx-3x-barlow-lens-125in) (the publisher's own terms; quoted for reporting and comment)
- [Celestron Luminos 31mm eyepiece](https://www.celestron.com/products/luminos-31mm-eyepiece-2in) (the publisher's own terms; quoted for reporting and comment)
- [Sky-Watcher Flextube 250P collapsible Dobsonian](https://www.skywatcherusa.com/products/sky-watcher-flextube-250p) (the publisher's own terms; quoted for reporting and comment)
- [Sky-Watcher Classic 250P Dobsonian](https://www.skywatcherusa.com/products/sky-watcher-classic-250p) (the publisher's own terms; quoted for reporting and comment)
- [Explore Scientific 10-inch Dobsonian](https://explorescientific.com/products/10-inch-dobsonian-reflector-telescope) (the publisher's own terms; quoted for reporting and comment)
- [Bresser Dobsonian telescopes](https://www.bresser.com/astronomy/telescopes/dobsonian-telescopes/) (the publisher's own terms; quoted for reporting and comment)
- [Bresser Corvette 8x42 binoculars](https://www.bresser.com/p/bresser-corvette-8x42-binoculars-nitrogen-purged-1440843) (the publisher's own terms; quoted for reporting and comment)
- [ZWO Seestar S50](https://www.zwoastro.com/product/seestar-s50/) (the publisher's own terms; quoted for reporting and comment)
- [ZWO Seestar S30](https://www.zwoastro.com/product/seestar-s30-smart-telescope/) (the publisher's own terms; quoted for reporting and comment)
- [DWARFLAB DWARF 3](https://www.dwarflab.com/us/products/dwarf-3-smart-telescope) (the publisher's own terms; quoted for reporting and comment)
- [Vaonis Vespera Pro](https://vaonis.com/vespera-pro) (the publisher's own terms; quoted for reporting and comment)
- [Unistellar official store](https://shop.unistellar.com/) (the publisher's own terms; quoted for reporting and comment)
- [Vortex Diamondback HD 10x42](https://vortexoptics.com/vortex-diamondback-hd-10x42-binocular.html) (the publisher's own terms; quoted for reporting and comment)
- [Steiner Predator 10x42](https://www.steiner-optics.com/products/predator-10x42) (the publisher's own terms; quoted for reporting and comment)
- [Swarovski EL 10x42](https://www.swarovskioptik.com/us/en/hunting/products/binoculars/el/el-42/el-10x42) (the publisher's own terms; quoted for reporting and comment)
- [Tele Vue eyepieces](https://www.televue.com/engine/TV3b_page.asp?id=50) (the publisher's own terms; quoted for reporting and comment)
- [Tele Vue telescopes](https://www.televue.com/engine/TV3b_page.asp?id=1) (the publisher's own terms; quoted for reporting and comment)
- [William Optics telescopes](https://williamoptics.com/collections/telescopes) (the publisher's own terms; quoted for reporting and comment)
- [Baader filters](https://www.baader-planetarium.com/en/filters/) (the publisher's own terms; quoted for reporting and comment)
- [celestron.com](https://www.celestron.com/collections/telescopes) (the publisher's own terms; quoted for reporting and comment)

## Cite or embed

- The Optics Spec Price Index carries 5 published figures read from 3 sources' own pages, from 699 to 1,999 USD, read 12 October 2026.
- 3 of the 24 named sources read in full publish a figure; 21 publish none, read 12 October 2026.
- Optics Spec Price Index, model ZWO Seestar S30 Pro: median 699 USD across 1 source, read 12 October 2026.
- Optics Spec Price Index, model ZWO Seestar S30 Pro Total Solar Eclipse Edition: median 799 USD across 1 source, read 12 October 2026.
- Optics Spec Price Index, model ZWO Seestar S50 Pro: median 899 USD across 1 source, read 12 October 2026.
- Optics Spec Price Index, model Swarovski EL 8.5x42: median 1,999 USD across 1 source, read 12 October 2026.
- Optics Spec Price Index, model Swarovski EL 10x42: median 1,999 USD across 1 source, read 12 October 2026.

Cite as: "TelescopeCompareHQ Optics Spec Price Index", updated 2026-10-19, https://telescopecomparehq.com/datasets/optics-spec-price-index/.

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