Updated: Jan 13
The Pacman Nebula is an emission nebula in the constellation Cassiopeia. It is located in the Perseus arm of our Milky Way galaxy, and so is best photographed in the Fall Season.
Visible in the center of the Pacman Nebula is a young open cluster, IC 1590. It is faint but easily visible in photographs. You might also be able to spot in with a pair of binoculars or a telescope if observing from a very dark site.
The cluster is home to more than 279 stars and illuminate the gases around it that shape the Pacman Nebula.
The photo on the left was taken by NASA and shows several stars from IC 1590.
We did not plan out our night correctly and initially did not intend to photograph NGC 281 that day, but changed our mind and spent 2 hours on it. Although the Pacman Nebula is bright enough to look great in most pictures, we wish we spent two extra hours of total exposure time on it to reduce noise in the background and get some more of the faint outer gases.
The image below is the result we got doing one hour of Hydrogen Alpha, thirty minutes of Oxygen III and thirty minutes of Sulfur II.
NGC 281 in narrowband with the ASI 1600MM
Camera: ZWO ASI 1600mm Pro Mono
Telescope: Orion 8" Astrograph f/3.9
Mount: Atlas EQ-G motorized Mount
Guiding: ZWO ASI 290MM Mini
Acquisition: ZWO ASIAIR
Total Exposure Time: 2 hours
Exposure Time per frame: 3 minutes
Filters: Ha (1 hour) / OIII (30 min) / SII (30 min)
How to find the Pacman Nebula?
Despite NGC 281's bright magnitude, this object cannot be spotted with the naked eye due to its gas composition. You might be able to see it using binoculars or a telescope if you are observing from a very dark location.
NGC 281 is located in Cassiopeia. An easy way to find it is to locate the constellation's iconic "W" shape and, from the middle star, aim just a bit "under" the W. You might be able to frame both the Pacman Nebula and the famous Andromeda Galaxy if using a DSLR camera with a wide lens.
Discovered in 1883
Got its name because it looks like the video game character
A star cluster, IC 1590 is visible within the gases
Processing of NGC 281
Processing the Pacman Nebula was actually pretty difficult. We followed our usual processing workflow, as we do for pretty much all our Astrophotography images, but we had some trouble getting a result we liked this time.
Our main challenge was noise removal and color calibration. We blame the low total exposure time for giving us so much pain in processing Pacman, and we still don't have a final result we are in love with.
How much data can you get with each filter?
Just like most of our images taken with our monochrome camera, we like to show you guys what the stacked data for each channel looks like before combining them into a color image.
Below are, from left to right, our stacked images of the Pacman Nebula using the following three narrowband filters:
Hydrogen Alpha (1 hour)
Oxygen III (30 minutes)
Sulfur II (30 minutes)
We won't lie, we're not huge fans of this target. Our image has actually been sitting on our computer for several weeks before we decided to finally upload it to our website.
We're not sure if we will revisit this object any time soon. We would have preferred to have spent more time on it and be done with it, but we're still pretty happy with the final result.
Have you imaged the Pacman Nebula? of the Crescent Nebula and/or the Soap Bubble Nebula in the comments! We'd all love to see your work :)
GALACTIC HUNTER BOOKS
Description: Discover 60 Deep Sky Objects that will considerably improve your Imaging and Processing skills! Whether you are a beginner, intermediate, or advanced astrophotographer, this detailed book of the best deep sky objects will serve as a personal guide for years to come! Discover which star clusters, nebulae, and galaxies are the easiest and most impressive to photograph for each season. Learn how to find each object in the night sky, and read our recommendations on imaging them in a quick and comprehensive way. Each target in this guide contains our advice on imaging, photos of expected results, and a useful information table. We've also included a few cool facts about each target, a map to find it in the night sky, and more!
Description: The Astrophotographer’s Journal is a portable notebook created for the purpose of recording observations, cataloguing photographs, and writing down the wonderful memories created by this hobby. This book contains more than 200 pages to memorialize your stargazing and imaging sessions, as well as a useful chart on the last pages to index exciting or important notes. Read back on the logs to see how much progress you have made through the months, the problems you overcame, and the notes taken to improve in the future. Just as the pioneers of astronomy did in their time, look up and take notes of your observations as you are the author of this star-filled journey.
Description: The Constellations Handbook is a logical guide to learning the 88 constellations. Learning the constellations is difficult. Remembering them is even harder. Have you ever wanted to look up to the night sky, name any pattern of stars and be able to tell their stories? This book groups the constellations in a logical order, so that the reader can easily learn them by their origin, and see how their stories interact with one another as a group. The last pages of this book include an index of all 88 constellations, each with a slot where you can write your own personal tips and tricks in order to memorize them with ease. The Constellations Handbook is not just another guide listing all the constellations from A to Z and their location, it is the perfect companion for stargazing, and a learning journey through the ages.
#astronomy #astrophotography #messiercatalog #messier #galaxy #nebula #cluster #stars #space #galactichunter #nevada #lasvegas #canon #orion #Orion #telescope #NGC281 #Pacman #Nebula #Narrowband #ZWO #ASI1600mm #ASIAIR