Deep Sky Object in Spring
Abell 754 (Galaxy Cluster in Hydra)


Date & Time: Dec 17 2023, from 25:04 to 25:57 JST(+0900)
Composed 10 shots with 6 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with IDAS LPS-P1 Light-pollution suppression filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight


Abell 754 / Galaxy Cluster, type 2 3 I-II:
R.A.09h 08m 48.0s (2000.0)
Dec.-09°38' 00" (2000.0)
Apparent Size50.4'
# of Galaxies92
Red ShiftN/A
Magnitude15.2
Distance760 million light yrs.
Galactic supercluster -
This is a galaxy cluster located approximately 4.7 degrees WSW of α Hydrae (Alphard). It hovers at a distance of 760 million light-years and encompasses over 90 faint galaxies with 15th or less magnitude within an area of about 50 arcminutes. By clicking on the button in the upper right corner of the page, you can switch to an image that has removed stars within the Milky Way galaxy.
The galaxy cluster extends to the eastern side of the field of view and is identified as the result of the collision between two galaxy clusters that began approximately 300 million years ago. This collision is still ongoing, and it will take several billion years before the system stabilizes into a single, cohesive galaxy cluster.



IC4351
Abell 1142

Copyright(c) 2023 by Naoyuki Kurita, All rights reserved.
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