Ammasso Doppio di Perseo - NGC 869 & NGC 884 - The Double Cluster - Open Clusters (Giuseppe De Pace)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 7 Per) · NGC 869 · NGC 884 · The star 10 Per · The star 8 Per · The star Misam al Thurayya I (χ Per · chi Persei Cluster · h Persei Cluster

Ammasso Doppio di Perseo - NGC 869 & NGC 884 - The Double Cluster - Open Clusters, Giuseppe De Pace

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Ammasso Doppio di Perseo - NGC 869 & NGC 884 - The Double Cluster - Open Clusters

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Ammasso Doppio di Perseo - NGC 869 & NGC 884 - The Double Cluster - Open Clusters

H+Χ PER, (NOTA ANCHE COME C 14), È UNA COPPIA DI AMMASSI APERTI MOLTO LUMINOSI, VISIBILI NELLA COSTELLAZIONE DI PERSEO; DEVONO IL LORO NOME COMUNE ALLA LORO ESTREMA VICINANZA E SOMIGLIANZA. POSSIEDONO PURE UNA LETTERA DI RIFERIMENTO (H E Χ), NONCHÉ NUMERI DI CATALOGO INDIPENDENTI (NGC 869 E NGC 884).Entrambi gli ammassi si trovano nel Braccio di Perseo, il braccio di spirale della Via Lattea immediatamente più esterno rispetto al nostro, il Braccio di Orione. Tuttavia gli ammassi si trovano più lontani fra loro di quanto possa sembrare dalla Terra; se infatti le stime sulla loro distanza da noi sono corrette (6800 anni luce per NGC 869 e 7600 anni luce per NGC 884)[2] si evince che la distanza tra i due ammassi è di circa 800 anni luce.

STRUMENTAZIONE:
ASKAR FRA 600 QUINTUPLETTO 108/600 @F5.6
QHY268M Pro @ 0°C [gain:56-offset:25]
SkyWatcher AZEQ6 GT
1 or1 (31 light da 120″) per RED
1 ora (31 light da 120″) per GREEN
1 ora (31 light da 120″) per BLU
Filtri RGB
Ruota portafiltri 7×2″ QHYCFW3
QHY OAG-M con QHY5II-L mono
N.I.N.A. + APP + PixInsight + PS
Balcone di casa a Bortle 8 (TORINO) 25/09/2023

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Ammasso Doppio di Perseo - NGC 869 & NGC 884 - The Double Cluster - Open Clusters

Ammasso Doppio di Perseo - NGC 869 & NGC 884 - The Double Cluster - Open Clusters

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Ammasso Doppio di Perseo - NGC 869 & NGC 884 - The Double Cluster - Open Clusters

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