import type { CatalogStar, ObservationOptions, Observer, RiseSetTransitResult, VisibilityWindow } from "../types.js";
export declare function calculateRiseSetTransit(input: {
    readonly star: CatalogStar;
    readonly observer: Observer;
    readonly date: Date;
    readonly horizonDegrees?: number;
    readonly samples?: number;
    readonly observation?: Omit<ObservationOptions, "date">;
}): RiseSetTransitResult;
export declare function calculateVisibilityWindows(input: {
    readonly star: CatalogStar;
    readonly observer: Observer;
    readonly start: Date;
    readonly end: Date;
    readonly minimumAltitudeDegrees?: number;
    readonly stepMinutes?: number;
    readonly observation?: Omit<ObservationOptions, "date">;
}): readonly VisibilityWindow[];
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