Celestial hemisphere:  Southern  ·  Constellation: Ophiuchus (Oph)  ·  Contains:  13 Oph)  ·  13 zet Oph  ·  13.85  ·  15.01  ·  20 Oph  ·  350 Ornamenta  ·  HD149031  ·  HD149108  ·  HD149123  ·  HD149147  ·  HD149165  ·  HD149166  ·  HD149181  ·  HD149216  ·  HD149243  ·  HD149270  ·  HD149286  ·  HD149287  ·  HD149307  ·  HD149463  ·  HD149507  ·  HD149579  ·  HD149594  ·  HD149617  ·  HD149633  ·  HD149653  ·  HD149662  ·  HD149663  ·  HD149701  ·  HD149758  ·  And 78 more.
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Sh2-27 Section, Ha, Stephen Garretson
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Sh2-27 Section, Ha

Getting plate-solving status, please wait...
Sh2-27 Section, Ha, Stephen Garretson
Powered byPixInsight

Sh2-27 Section, Ha

Equipment

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Acquisition details

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Description

This image covers a part of this huge HII area in Ophiuchus which spans 13°. It's pretty low on my horizon, making it a challenge. The dual Borg 55FLs and ASI 2600MM Pros did a good job gathering data. The bright star lower right is Zeta Ophiuchi. Note the small globular bottom left.

[29] 600s guided Ha subs
total integration: 4 hours, 50 minutes
capture:
dual Borg 55 FL f/3.9 6 element Petzval astrographs
dual ASI 260MM Pros
dual Chroma 3nm Ha filters
dual ZWO EFWs

dual ZWO EAFs

guiding:
William Optics 130mm UniGuide scope
ASI 290M Mini guide camera

TheSkyX, SGP, PHD2
PixInsight, Mac OS Photos, Preview

from the Beevo Dome

...Stephen

Comments

Sky plot

Sky plot

Histogram

Sh2-27 Section, Ha, Stephen Garretson

In these public groups

The refractors!