NGC 3521 (Leo)

NGC 3521 (Leo)

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Date/Site: 26. April 2020. Remote observatory on the AAR club's site in Presberg
Exposure/
Filters:
R: 14 x 180 seconds,
G: 13 x 180 seconds,
B: 12 x 180 seconds (-20°C)
Camera: QSI 632 with Astronomik Type II-filters
Optics/
Instrument:
250mm f/4 Newton with Baader RCC1 on 10Micron GM1000 HPS
Guiding: Lodestar attached to a 61mm-finder,
focusing: Microtouch and FocusMax,
data acquired remotely using CCD-Commander and MaximDL 6,
calibration and processing: PixInsight 1.8

 

© Friedhelm Hübner, last revision:  20.08.2022