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The Cave Nebula, 


            Theodore Arampatz...

The Cave Nebula

Technical card

Resolution: 2006x1295

Dates:Sept. 5, 2015

Frames: 170x480" -10C bin 1x1

Integration: 22.7 hours

Darks: ~30

Flats: ~25

Flat darks: ~25

Bias: ~150

Avg. Moon age: 22.24 days

Avg. Moon phase: 49.07%

Bortle Dark-Sky Scale: 9.00 job: 807535

Locations: Via Lactea Observatory, Paramithia, Epirus, Greece

Data source: Backyard


The Cave Nebula ( Sharpless 2-155, Caldwell 9) is part of an extensive region of ionized hydrogen gas region. Sharpless 2-155 is a dim and very diffuse nebula within a larger nebula complex containing emission, reflection, and dark nebulosity. It is located in the constellation Cepheus and associated with the Cepheus B giant molecular cloud, laying at a distance of about 2800 light-years. Part of the cloud is illuminated by a pack of hot, young stars known as the Cepheus OB3 association.

Instruments and exposure data:
W.O FLT110 with dedicated TMB field flattener
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
Meade DSI
Filters: Ha 5nm Astrodon_S[II] 8nm Baader_O[III] 3nm Astrodon
Sky-Watcher EQ6 Pro

Ha:50*8min bin1x1
S[II]:63*8min bin1x1
O[III]:57*8min bin1x1
Total exposure time:22h 40min

Vironas,Athens Greece



Theodore Arampatz...
License: Attribution-NonCommercial-NoDerivs Creative Commons


The Cave Nebula, 


            Theodore Arampatz...