Deep Sky Planner

Find deep-sky objects that are well placed from your chosen location, with twilight-aware visibility, magnitude filtering, RA/Dec, transit time, imaging filter suggestions, telescope suitability and DSS survey thumbnails.

The page uses the same shared location picker as Sky Tonight. Use the default Blackpool Cricket Club location, or choose anywhere in the world.

Tonight at a glance

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Location / Time Zone

Blackpool Cricket Club

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Twilight and darkness

Civil twilight Nautical twilight Astronomical twilight Astronomical darkness

Stage	Evening	Morning
Sun	Sunset —	Sunrise —
Civil twilight	—	—
Nautical twilight	—	—
Astronomical twilight	—	—
Astronomical darkness	—	—

Filters

Results summary

—loaded

—matching filters

—excellent

DSSthumbnail source

Thumbnails are lazy-loaded DSS colour cutouts generated by the CDS HiPS2FITS service. Use the thumbnail link on each card to open the JPEG.

Filter guidance

Galaxies and reflection nebulae favour broadband/LRGB and dark skies. Emission nebulae, planetary nebulae and supernova remnants are usually better candidates for Ha/OIII/SII or OSC dual-narrowband filters.

The brightest 2000 NGC/IC selection is magnitude-ranked after loading the OpenNGC catalogue. Objects with no magnitude are kept only when they are Messier/Caldwell or match your selected catalogue mode.

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Click an altitude chart for a larger view.

Catalogue data is loaded from OpenNGC when available. Thumbnail imagery uses external survey cutouts and may be slower for large result sets.