The Double Cluster (Caldwell 14, NGC 869 & NGC 884) Within the Perseus Arm lies two open clusters (NGC 869 and NGC 884) known as the Double Cluster. The Double Cluster is a must for a late autumn evening sweep of the night sky, with even a small pair of binoculars. NGC 869 and NGC 884 together are beautiful to look at, especially if you use binoculars or a telescope. The Double Cluster in Perseus. In this week's Astronomy magazine podcast, we'll help you observe the constellation Triangulum, the Double Cluster in Perseus, and spiral galaxy NGC 891 in your autumn night sky. Magnitudes are given without a decimal point, e.g. The Double Cluster in Perseus, NGC869 and 884. Comments Double the viewing pleasure in one field of view. 67 is to be interpreted as magnitude 6.7. How to Find It Between Cassiopeia and the head of Perseus. Cassiopeia is a good pointer to the object as shown in this diagram. The Double Cluster in Perseus is one of the most beautiful objects in the sky, and is well placed for northern observers in the northeastern sky on these cool autumn evenings. Sometimes known as h and Chi (χ) Persei, respectively, they are easily visible through binoculars and small telescopes. This pair of open clusters which can be viewed in the same field of view can just be seen with the naked eye in good conditions. At dusk, it will become visible around 19:54 (PDT), 33° above your north-eastern horizon. To find the Double Cluster, first spot the five-star constellation of Cassiopeia high in the northeast, the next clear evening. I was testing for tilt & collimation. The Perseus double cluster is within the boundaries of the constellation Perseus. The sheer number of stars in this region of the sky really help. The Double Cluster in Perseus is a truly magnificent sight in both binoculars and telescopes. The next is the Double Cluster located above the head of Perseus. A map of the star field. The same was true for the 100P telescope. Photo by Trevor Jones. Find/Identify. Double Cluster in Perseus - posted in Experienced Deep Sky Imaging: I took the image below to check the general health of the collimation of the RASA. The first is the Alpha Persei star cluster. They form what looks like an "M" on one side. I was able to find the open clusters, but using my binoculars, I was not able to tell which of the two clusters I was viewing, or even both. You can catch this spectacular star cluster pair with just your eyes on a dark night.The pair is easy to find. Just look for the “Big M” - the five stars of Cassiopeia, nearly overhead in the northeastern sky at about 8 p.m. in early December. The image consists of 113 15 second subs on the RASA 11 using the QHY168C & astronomik CLS LPR filter. Using the two lower stars of the "M," make a long triangle with the Double Cluster, to the lower right. The brightest star Mirfak is part of this cluster. The final cluster in Perseus is called Messier 34. NGC 869 & NCG 884 The Double Cluster in Perseus These open star clusters lie at a distance of 7500 light years Imaged using Skywatcher Equinox 80 Pro ED and Altair Hypercam 183C Pro A total of 20 x 120 second and 30 x 300 second exposures Perseus Cluster (NGC 884) January 25, 2018. Find: During my "winter observations" in February 2017, I tried to find the double cluster NGC 884/869 in Perseus. I think the best way to find the Perseus double cluster is to use the … From Redmond , Perseus Double Cluster is visible all night because it is circumpolar.It will be highest in the sky at 02:34, 80° above your northern horizon. With just your eyes on a dark night.The pair is easy to find a dark night.The pair is to... Subs on the RASA 11 using the two lower stars of the `` M '' on side. The Double Cluster is a must for a late autumn evening sweep of the sky really help can. 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