Deep Sky Object in Spring
NGC3717 (Galaxy in Hydra)


Date & Time: Dec 27 2025, from 27:55 to 28:51 JST(+0900)
Composed 15 shots with 4 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


NGC3717 / Galaxy, type SAb: sp
R.A.11h 31m 32.1s (2000.0)
Dec.-30°18' 25" (2000.0)
Apparent Size7.4×1.5'
Radial Velocity+1724km/s
Magnitude12.2
Distance92 million light yrs.
Group of Galaxies -
Other IDsUGCA 238, ESO 439-15
MCG -5-27-15, IRAS 11290-3001
PGC 35539
NGC3717 is a medium sized edge-on galaxy positioned at 1.5 degrees north of xi Hydrae in central region of the constellation. The galaxy has long and short axes of 7.4 and 1.5 arc minutes, respectively. NGC3717 has been classified in spindle-shaped spirals, a central dark lane can be detected clearly. The distance to the galaxy has been estimated about 92 millions light years.



NGC3705
Copeland's Septet

Copyright(c) 2025 by Naoyuki Kurita, All rights reserved.
To top page To Deepsky in Spring index Hydra