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CTA 1, HOO, Stephen Garretson

CTA 1, HOO

Getting plate-solving status, please wait...
CTA 1, HOO, Stephen Garretson

CTA 1, HOO

Equipment

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Acquisition details

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Description

CTA 1 is a large supernova remnant in Cepheus, covering about 1.5°. OIII is the dominant signal. NGC 40 is a small planetary nebula, but just doesn't pop out in yis image. My colleague
MJ Post imaged this target, [I think from DSNM[?], so even though it is quite faint, I decided to give it a try; here's the result.

[60] 600s guided Ha subs
[24] 600s guided OIII subs
total integration: 14 hours

capture:
dual Borg 55 FL f/3.9 6 element Petzval astrographs
dual ASI 260MM Pros
Chroma 3nm Ha filter
Baader Ha 3.5nm filter
dual Chroma OIII
dual ZWO EFWs
dual ZWO EAFs

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

Paramount MX+

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

from the Beevo Dome

...Stephen

Comments

Histogram

CTA 1, HOO, Stephen Garretson

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The refractors!