M31 - Galaxy - Skylook.org

M31

Andromeda Galaxy

Galaxia Andromeda Magnitud 3.44

Visibilidad actual

Altitud

-4.7°

Acimut

339.1°

Below horizon - not visible
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Detalles del objeto

Propiedad Valor

Rise/Set Times

Hora de salida

20:25

Hora de tránsito

05:33

Hora de puesta

14:42

Observing Recommendations

Equipment Needed:
Difficulty: Easy
Magnification: Low to Moderate (50-150x)

Observing Tips:

  • Visible to the naked eye under dark skies
  • Look for spiral structure or dust lanes with larger telescopes
  • Best viewed during new moon for contrast
  • Wait for better sky conditions or higher altitude

Acerca de los datos del cielo profundo

Data Sources

Deep sky object data is compiled from authoritative astronomical catalogs including NGC (New General Catalogue), IC (Index Catalogue), Messier, and Caldwell. Primary source: OpenNGC.

Coordinate Systems

Right Ascension (RA): Celestial longitude measured in hours, minutes, and seconds (0h to 24h).

Declination (Dec): Celestial latitude measured in degrees, arcminutes, and arcseconds (-90 to +90 degrees).

Escala de magnitud

The astronomical magnitude scale is logarithmic. Lower values = brighter objects. The formula relating magnitude difference to brightness ratio:

\[m_1 - m_2 = -2.5 \times \log_{10}\left(\frac{F_1}{F_2}\right)\]

where m is magnitude and F is flux.

Observing Recommendations

Recommendations are calculated based on:

  • Altitud: Objects above 30 degrees altitude are easier to observe
  • Magnitud: Brighter objects (lower magnitude) are easier to see
  • Fase lunar: Dark skies (new moon) improve visibility of faint objects

Rise and Set Times

Calculated using Skyfield astronomical library with observer's location and date. Times shown in local timezone. Objects are considered visible when altitude is above 0 degrees.

Best Viewing Time

Determined by finding when the object reaches maximum altitude (culmination) during nighttime hours. Calculated as:

\[t_{\text{best}} = \arg\max_{t \in \text{night}} h(t)\]

where h(t) is altitude as a function of time.