Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1590  ·  NGC 281
Pacman Nebula - NGC281, bushi893
Pacman Nebula - NGC281
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Pacman Nebula - NGC281

Pacman Nebula - NGC281, bushi893
Pacman Nebula - NGC281
Powered byPixInsight

Pacman Nebula - NGC281

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Description

I have a strange line that appear on more than 10 subs of 180s. Each time at the same place, I don't understand where it comes from. I though it was something like the ampglow because it's my first time I used a 180s exposure but it's not displayed on darks. I also have a back focus issue on corner due to my modification for the off axis guider.

Skywatcher 150/750

HEQ 5 Pro Go To

ASI 183 MC PRO

24 subs * 180s DOF 50/0/10

Gain 100 Offset 14

Temp -5°C

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Pacman Nebula - NGC281, bushi893