Double Cluster NGC 884 + 869 RGB Askar 400 (Last ASI 1600 MM Image) (Brandon Tackett)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: 10 Per · 7 Per) · 7 chi Per · 8 Per · 9 Per · 9 i Per · B201 · Double cluster · HD13338 · HD13370 · HD13391 · HD13392 · HD13403 · HD13412 · HD13420 · HD13476 · HD13493 · HD13494 · HD13505 · HD13506 · HD13543 · HD13561 · HD13620 · HD13633 · HD13635 · HD13658 · HD13659 · HD13669 · HD13716 · HD13717 · And 115 more.

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Double Cluster NGC 884 + 869 RGB Askar 400 (Last ASI 1600 MM Image)

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Double Cluster NGC 884 + 869 RGB Askar 400 (Last ASI 1600 MM Image)

I was finishing some data on a few targets that had set to the west and turned the last 3 hours to the always beautiful double cluster.

Likely one of the last of the images I will take with the venerable ASi 1600 MM. I have had this camera for the past 3 years and taken so many great images with it, but I found myself always wanting to use the ASI 294 MM on more than one rig. Also, the star halo and micro lensing at high focal length was beginning to bother me.

So, I recently purchased another ASI 294 MM after going back and further between it and the ASi 2600 MM. The 294 fits my two very short focal length Rokinon 135 and askar at the 2.3 um pixel size and does well with the 4.63 with the RASA and 9.25. Also, I wanted to keep the same pixel size or ratio across all my images and didn't want to have a 3.76 um camera in the mix. At the end of the day, the 2600 APS-C added 100-150 pixels on each side of the image and no amp glow; however, I really have loved the images with the ASI 294 MM.

The double cluster is a combination of two open clusters in the constellation of Perseus. NGC 884 (3.2 million years) is thought to be young than NGC 869 (5.6 million years) which is more compressed. Both clusters are an estimated 7,000 light years from earth, each is approximately a few hundred light years from the other.

Central USA
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Status	Advanced success
Started	...
Astrometry.net job	6814169
PixInsight job	D3WLH4SCT5G032D4DEJBJD9YIRJYKLSC
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h20m26s.53
RA (top/left)	02h29m03s.59
RA (top/right)	02h12m07s.47
RA (bottom/right)	02h12m34s.30
RA (bottom/left)	02h28m01s.75

Dec (center)	+57°07′40″.1
Dec (top/left)	+58°46′56″.5
Dec (top/right)	+58°48′23″.3
Dec (bottom/right)	+55°26′28″.3
Dec (bottom/left)	+55°25′01″.5

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Double Cluster NGC 884 + 869 RGB Askar 400 (Last ASI 1600 MM Image)

Double Cluster NGC 884 + 869 RGB Askar 400 (Last ASI 1600 MM Image)

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Double Cluster NGC 884 + 869 RGB Askar 400 (Last ASI 1600 MM Image)

Double Cluster NGC 884 + 869 RGB Askar 400 (Last ASI 1600 MM Image)

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