A little gem in Cepheus: NGC7129 with NGC7142 in RGB(Ha-ish) (Michele Vonci)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: IC 5134 · NGC 7129 · NGC 7142

A little gem in Cepheus: NGC7129 with NGC7142 in RGB(Ha-ish), Michele Vonci

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A little gem in Cepheus: NGC7129 with NGC7142 in RGB(Ha-ish)

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A little gem in Cepheus: NGC7129 with NGC7142 in RGB(Ha-ish)

Super happy with this image! These two objects together are probably my favourite targets but I've been reluctant for so long to try and image them. With such short nights and poor weather, I can't commit to long projects, and I wasn't sure I could pull out something decent in the three hours of the current UK night (midnight to about 3 am when it starts dawning). It turns out that under a 50% moon with just 2h of RGB and 0.5 hours H-a (very weak to be fair) I'm very happy with the result! The processing has been quite challenging, The nebulosity of NGC7129 is quite hard to pull out with such little data. For a start, I processed light frames without darks, in an attempt to spare as much as possible the faint signal of the reflection nebula then once I finished to process the RGB data, in the end, I used the B channel - the one with better S/N -as an artificial luminance layer, and that helped a lot. The H-a data is very noisy and doesn't add much to the picture but I've included it as revision anyway.

Original
B
C

B

Description: Added H-a data

Uploaded: ...

C

Description: More aggressive processing, including darks

Uploaded: ...

Suburban Astrophotography
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UK Astro-Imaging

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Status	Basic success
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Astrometry.net job	3912248
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A little gem in Cepheus: NGC7129 with NGC7142 in RGB(Ha-ish)

A little gem in Cepheus: NGC7129 with NGC7142 in RGB(Ha-ish)

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A little gem in Cepheus: NGC7129 with NGC7142 in RGB(Ha-ish)

A little gem in Cepheus: NGC7129 with NGC7142 in RGB(Ha-ish)

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