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NGC6888 Crescent Nebula May 23, 2018 165 views3212×238820.94 MB

Classic view
NGC6888 Crescent Nebula
j.w
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Backyard
S 22nd St Observatory, San Jose (CA), US
Bortle
6
N
Cyg
20h 12m 7s · +38° 21′ 14″
0.81° × 0.60°
0.90″/px
178.46°N
Integration
Hα
12×1800″
6h
17 Mar 2016
OIII
13×1800″
6h 30′
23 Mar 2016
SII
4×1800″
2h
16 Apr 2016
Totals
14h 30′
3 days in 2016
80%
Hα
12×1800″=6h
17 Mar 2016
OIII
13×1800″=6h 30′
23 Mar 2016
SII
4×1800″=2h
16 Apr 2016
Totals14h 30′
3 days in 2016 80%
Imaging equipment
Telescope
Astro-Tech AT8RC
Camera
QSI 683wsg-8
Mount
Orion Atlas EQ-G 
Filters
null Astrodon 3nm OIII  Ha 3nm  SII 3nm 
Accessories
Astro-Physics CCDT67 Telecompressor  Xagyl EQDIR 
Software
Sequence Generator Pro 
Guiding equipment
Guiding camera
Lodestar X2 
Objects
Crescent nebulaNGC 6888
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