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Object types

All types of objects included.
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Local Coordinates

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º ' ''

Local Time

Approximate sunrise/sunset times for today.
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  Day

Minimum Altitude

Showing everything above the horizon.
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  degrees above the horizon for . circumpolar objects

Apparent Magnitude

All magnitudes included.
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  . objects with no catalogued magnitudes.

You can follow this guideline to know an approximate magnitude limit for your observation session.

Clear skies Polluted skies
Naked Eye 6.5 4.5
7x50 Binoculars 10 8
6-inch telescope 12.5 10.5
12-inch telescope 14 12

Apparent Size

All sizes included.
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  . objects with no catalogued size.

Filters by the large dimension only.

Surface Brightness

All brightnesses included.
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  . objects with no catalogued surface brightness.

Surface Brightness is calculated as magnitude per squared arcsecond.

Catalogue

All catalogues included.
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Object Coordinates

All coordinates included.
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