The part that decides whether pointing is a pleasure
A telescope at ordinary magnification shows a patch of sky smaller than the Moon, and finding anything in it by eye alone is a slow business. The finder is what closes that gap, and it is the accessory most often supplied badly and replaced first. An optical finder — the small refractor with crosshairs — magnifies a few times and shows stars too faint for the naked eye, which is what makes star-hopping possible: the observer walks from a bright star to a faint one across a chart. Its drawback is image orientation. A straight-through finder inverts the view, an angled one with a prism may mirror it, and matching either to a printed chart takes practice that nobody enjoys acquiring at midnight. The true field of view is the specification that decides usefulness: a wide field contains enough recognizable stars to locate the pattern, a narrow one shows a handful of anonymous points. Read the bracket, because finder shoes are not standardized and a finder that does not fit the tube is a paperweight; a bracket with two adjustment points holds alignment better than one with three that fight each other. An illuminated reticle earns its place on a dark sky, where plain crosshairs disappear. Eye relief decides whether spectacles stay on. We compare aperture, magnification, true field of view, image orientation, bracket fitting, reticle illumination and eye relief.
9x50 · right angle · fully multi-coated · crosshair reticle · Synta-style dovetail bracket
Astromania's 9x50 right-angle finder: fully multi-coated, with a crosshair reticle, objective focusing, two-screw-and-spring alignment and a Synta-style dovetail bracket.
Best for: A telescope that regularly points high, where a straight finder is painful to use
≈ $69
9x50 · right angle, correct image · fully multi-coated · crosshair reticle · Synta-style dovetail bracket
Astromania's 9x50 right-angle correct-image finder: fully multi-coated, with a crosshair reticle, objective focusing, two-screw-and-spring alignment and a Synta-style dovetail bracket.
Best for: Star-hopping from a printed chart on a telescope that points near the zenith
≈ $87
5x24 replacement finder for Koolpte's own 80/600 telescope · no optical figures published
A black 5x24 replacement finder sold for compatible Koolpte 80/600 telescopes, with no optical specification beyond the 5x24 in the title.
Best for: A Koolpte 80/600 whose own finder has been lost or broken
≈ $11
5x24 · crosshair reticle · three-screw XY adjustment · curved bracket that bolts to the tube · dust caps
SVBONY's 5x24 finderscope: a black metallic-finish finder with a crosshair reticle, three thumbscrews for alignment and a curved bracket that bolts to the tube and will not slide into a dovetail base.
Best for: Replacing a lost 5x24 on a beginner telescope that already has the mounting holes
≈ $13
8x50 · 6° field · correct image (roof prism) · red illuminated open-center reticle · 16 mm eye relief · 15.9 oz
Explore Scientific's 8x50 illuminated straight-through finder: a 6-degree field, a roof prism for an upright correct image, a red illuminated open-center measuring reticle, 16 mm eye relief and EMD coatings, with bracket.
Best for: Centering faint objects, where a dark crosshair on a dark sky is unusable
≈ $180
The finder’s aperture decides how many stars appear in its field, and therefore whether you can locate yourself at all.
True field of view is what lets a star pattern be recognized. A narrow-field finder is of no use.
Eye relief, published together with reticle illumination, decides use with spectacles and in the dark.
For locating the part of the sky being aimed at, before moving to the main eyepiece, whose field is far narrower.
Whether the image appears erect, inverted or mirrored. It is published because it changes how a star chart is read.
Low by nature: published magnification exists to preserve a wide field. Finding is not observing.
No. The published bracket fitting gives the format, and makers do not all follow the same shoe.
It makes centering easier in the dark. Its presence appears in the characteristic published with eye relief.
The portion of sky visible, in degrees. It is the figure that decides how easily a constellation is recognized.
This section covers optical finders. Their published characteristics do not compare with a pointer’s.
It has to be set on the main tube’s axis. The procedures sit in the maker’s manual.
A finder is judged on its field before its magnification, and on its image orientation before anything else: that is what decides whether chart and sky look alike.
The column is shown only when four instruments in five publish the figure. Below that, it would be comparing the absence of numbers.
| Model | Price | Aperture | Magnification | Bracket fitting |
|---|---|---|---|---|
| Koolpte 5x24 replacement for 80/600 | $11 | 24 mm (0.94 in), from the 5x24 in the title | 5x, from the title | Not published · sold for compatible Koolpte 80/600 models; the maker asks buyers to verify model and color compatibility |
| SVBONY 5x24 finderscope | $13 | 24 mm (0.94 in) | 5x | Curved base with two holes, attached to the tube with bolts or screws · will not slide into a dovetail base, stated · three thumbscrews for XY alignment |
| Astromania 9x50 angled finder | $69 | 50 mm (1.97 in) | 9x | Standard Synta-style dovetail bracket · alignment by two screws and a spring |
| Astromania 9x50 right angle correct image | $87 | 50 mm (1.97 in) | 9x | Standard Synta-style dovetail bracket, stated to fit Sky-Watcher, Vixen, Orion, GSO and similar shoes · alignment by two screws and a spring |
| Explore Scientific 8x50 illuminated finder (0620150) | $180 | 50 mm (1.97 in) | 8x | Bracket included · fits the Hybrid Finder Scope Base or the original standard or T-shaped base |
Specifications: manufacturer sheets for telescopes and observing optics and the matching Amazon product pages. Prices and availability: Keepa. Every figure in this table names its source.
Most recent revision in this category: November 7, 2026.
Any figure written into the body of this page was true on the day it was written. The amount shown next to each instrument is requested from the retailer as the page loads, and it is that amount, not the text, that stands.
