Light gathering
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Compares primary collecting area from aperture diameter.
Gear Lab · Comparison tool
Telescope Setup Compare
Put two telescope setups side by side using the same optical math. Compare what changes when aperture, focal length, eyepiece, weight, or price changes.
Setup A
Setup B
Live comparison
What changes between the two setups?
| Metric | Setup A | Setup B | What it means |
|---|---|---|---|
| Aperture | — | — | More aperture gathers more light and improves theoretical resolution. |
| Focal ratio | — | — | Focal length ÷ aperture. Faster ratios give wider fields with the same aperture. |
| Dawes limit | — | — | Theoretical double-star resolution. Lower arcseconds is finer. |
| Magnification | — | — | Uses each setup's selected eyepiece and Barlow or reducer factor. |
| Exit pupil | — | — | A useful indicator of image brightness at the selected magnification. |
| Weight | — | — | A telescope that is easier to move and set up often gets used more. |
| Price / mm aperture | — | — | A rough value metric only. Mount quality, optics, accessories, and electronics still matter. |
Portability
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Based only on the setup weights you enter.
Price difference
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Current price input only. Availability and included accessories can change the real value.
Comparison rule
Numbers narrow the choice. They do not make the choice for you.
Optical design, mount stability, focuser quality, storage, cooldown, collimation, tracking, electronics, warranty, included accessories, and your observing goals can matter as much as aperture and focal length.
Gear Lab principle
Use comparable measurements before affiliate links enter the conversation.
StarStation's future product reviews can use the same decision factors shown here, then add hands-on evidence, mount quality, ergonomics, accessories, price history, and competing models.