IC1795 - Fish broth (Tom Gray)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD15069 · IC 1795 · LBN 645 · LBN 646 · LBN 647 · LBN 648 · LDN 1359 · NGC 896

IC1795 - Fish broth

Revision title: LHa RGB image

IC1795 - Fish broth

Revision title: LHa RGB image

IC1795, the 'fishead' nebula lies at the base of the heart nebula, around 6000 LY away in the Perseus arm of the Milky Way. It is a complex nebula with strong emissions in Hydrogen, Oxygen and Sulphur bands. This image comprises four hours data (20 x 10 minute subs through my Baader 7nm Ha filter + 26 x 120s L subs) as a monochrome image.

As a work in progress, data were captured (with dithering via PHD), calibrated, stacked and aligned in Nebulosity v3. Processing was relatively easy in Startools v1.8 alpha, using a standard workflow, bringing out a wealth of detail and dark rifts. I look forward to adding other Narrow band and LRGB data, which I will post as future revisions.

[POSTSCRIPT - I wondered why this image was so soft, given reasonable seeing conditions, and guiding. I've since found my collimation was off for this and my last image of the horsehead, which is a shame. Now corrected using Frank's excellent Metaguide collimation tool, which works well with SCTs and an old webcam].

[[PPS. I've tweaked these images and stretched the original using an LHa composite, and to improve star colour in the RGB composite. There is a little more noise in the final images]].

Original
Final
B

B

Title: LHa RGB image

Description: I added 46m RGB data (120s exposures) to my Ha image (600s exposures) - processed and layered in Startools for a total integration of just under 4 hours.

Uploaded: ...

Low-Cost Astrophotography
Only Monochromatic (Black and White!!!!! NO color, please!)
Schmidt-Cassegrain Telescope (SCT) Imagers
Altair Astro 183 M/C Hypercams
UK Astro-Imaging
Narrowband imaging

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	5282260
PixInsight job	R19R2R7IIJHNU30KDFV5S8EJ9BPP9FQE
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h27m07s.22
RA (top/left)	02h24m24s.66
RA (top/right)	02h29m33s.18
RA (bottom/right)	02h29m51s.96
RA (bottom/left)	02h24m39s.11

Dec (center)	+62°04′56″.2
Dec (top/left)	+61°52′54″.8
Dec (top/right)	+61°50′14″.1
Dec (bottom/right)	+62°16′44″.8
Dec (bottom/left)	+62°19′26″.9

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IC1795 - Fish broth

Revision title: LHa RGB image

IC1795 - Fish broth

Revision title: LHa RGB image

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IC1795 - Fish broth

Revision title: LHa RGB image

IC1795 - Fish broth

Revision title: LHa RGB image

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