This expanding shell of gas and dust was created by the original
star cluster at the heart of Cep OB4, that has now dispersed. It is now lit and ionized by the young star cluster Berkeley 59, at its south end and it is expanding into the
dark nebula NGC 7822 at its north end. Berkeley 59 is surrounded by another dark region of disturbed gas and dust called W1.
credit: galaxymap.org
Instruments and exposure data:
W.O FLT110 with dedicated TMB field flattener and FeatherTouch 3'' focuser
Filter Ha 5nm Astrodon
SBIG ST10XME CFW9
Starizona MicroTouch autofocuser
EQ6
Ha:15*15min bin1x1
Total exposure time:3h45min
1 comment:
Για μια ακόμα φορά με εκπλήσεις! Πάντα τέτοια! Καλό καλοκαίρι...
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