Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  The star 9Cas
The Garlic Nebula / CTB1 / Abell 85 / LBN576 in HOO+RGB, Maroun Habib
The Garlic Nebula / CTB1 / Abell 85 / LBN576 in HOO+RGB
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The Garlic Nebula / CTB1 / Abell 85 / LBN576 in HOO+RGB

The Garlic Nebula / CTB1 / Abell 85 / LBN576 in HOO+RGB, Maroun Habib
The Garlic Nebula / CTB1 / Abell 85 / LBN576 in HOO+RGB
Powered byPixInsight

The Garlic Nebula / CTB1 / Abell 85 / LBN576 in HOO+RGB

Equipment

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Acquisition details

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Description

A supernova remnant about a full moon of apparent size in the constellation of Cassiopeia. It is a very faint object as it was challenging in terms of planning, acquisition and processing.

Planning:

I originally started imaging this target earlier in July, but after my camera died on me, I restarted this target 2 months later with a different chip size, thus a re-framing was in need. After checking several sky surveys for this matter, I landed on a vertical field of view, where the nebula was conceived to appear rising above a hill of dark nebulosity. Later to notice that this hill was actually an undocumented nebula, and a candidate for a new supernova remnant (see the filaments and ribbons at the bottom of the frame).

Acquisition:

I went berserk mode on this target after noticing the nebulosity at the bottom, I planned for 100 hours but ended up with only 82, including 10 minutes length of exposures. I dropped 30% of those frames, but this helped me solve multiple issues with my setup including 3 sources of differential flexure (hint for future plans: OAG).

Will I go full berserk mode after a target again? Probably yes, but not anytime soon for a faint one.

Processing:

Probably the most challenging target I have processed, it involved using Gaussian Blur in some parts for noise reduction that I am not proud of, but I learned different new techniques during this process.

Under the hood:

iOptron CEM70, TMB92SS, ZWO ASI1600mm pro, 290mm mini, 60mm Orion guidescope

Hii: 252x600s (42 hours)

Oiii: 480x300s (40 hours)

Software: SGP, Phd2, Sharpcap, Pixinsight, Adobe Photoshop and Lightroom CS5

Credits: Daniel Caracache for lending me his mono camera and filterwheel set

Location: The MVST Observatory (Moophz' Very Small Telescope)

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