# PacMan Nebula, NGC 281

- By: Chuck Ayoub
- Date: 2017-10-10
- Classification: Photograph
- Museum: [Wikimedia Commons](https://commons.wikimedia.org/wiki/File:PacMan_Nebula,_NGC_281.jpg)
- Rights: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0)
- Picture: https://upload.wikimedia.org/wikipedia/commons/thumb/5/5b/PacMan_Nebula%2C_NGC_281.jpg/1920px-PacMan_Nebula%2C_NGC_281.jpg
- Who can see it: Kids profiles and older (museums give no ratings; placed by Invisible Network from the museum's own words)

The PacMan Nebula (NGC 281) was created with Ha, OIII, and SII filters using the Hubble Palette.

Imaging Telescope:

Explore Scientific 127mm ED Refractor (952 focal length)

Field Flattener:

HoTech 2" SCA Field Flattener

Mount:

Celestron CGX

Polar Alignment:

QHYCCD PoleMaster

Imaging Camera:

ZWO ASI1600MM-Cool

Ha=61x180s

OIII=115x120s

SII=60x180s

Total Time: 9.9 hours

Gain: 139, Offset: 21

Guide scope:

Orion ST80

Guide Camera:

Lodestar X2

Guide Software:

PHD2

Calibration Frames:

Darks: 50, Bias: 50, Flats: 50

Capture software:

Sequence Generator Pro (SGP)

Stacking software:

PixInsight

Post Processing:

PixInsight, PhotoShop

Dew Shield, Dew Heater Strip