NGC 3738 (UMa)

NGC 3738 (UMa)

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Date/Site: 10. and 25. March 2022. Remote observatory on the AAR club's site in Presberg
Exposure/
Filter:		 R: 7 x 300 seconds,
G: 11 x 300 seconds,
B: 10 x 300 seconds,
L: 42 x 300 seconds, (-20°C)
Camera: Moravian G3-16200 with Astronomik Type II-filters
Optics/
Instrument:		 250mm f/4,7 Newton with VIP-3010 Paracorr on 10Micron GM1000 HPS
Guiding: ASI120 attached to a 61mm-finder,
focusing: Microtouch and FocusMax,
data acquired remotely using CCD-Commander, PHD_Broker with PHD2/multistar-guiding and MaximDL 6,
processing: MaximDL 6 and PixInsight 1.8

NGC 3738, aka Arp 234, is an active irregular dwarf-galaxy in the constellation Ursa Major. It is blue in appearance because of its large H2-regions and massive star-building clusters.
It is framed by NGC 3733 (left) and by NGC 3756 (right).

© Friedhelm Hübner, last revision:  03.12.2023