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Observation by Mike Greenhill-Hooper: NGC 3190 Group / Leo Quartet

Uploaded by

Mike Greenhill-Hooper

Observer

Mike Greenhill-Hooper

Observed

2026 Mar 15 - 19:30

Uploaded

2026 Mar 18 - 08:03

Objects

NGC3190
NGC3193
NGC3185
NGC3187

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Constellation

Leo

Field centre

RA: 10h17m
Dec: +21°49'
Position angle: +136°49'

Field size

0°20' × 0°11'

Equipment
  • Telescope: 20" f/4 Obsession Dobsonian; Paracorr coma corrector
  • ASI294MMPro camera with LRGB filters
Exposure

4x150 frame live stacks for each filter; 2s exposure, gain 450, temp 1C, dark and flats corrected

Location

Miradoux, S.W. France

Target name

NGC 3190 galaxy group / Leo Quartet

Title

NGC 3190 Group / Leo Quartet

About this image

Images captured useing SharpCap Pro. Processed with Affinity Photo, GraXpert, Cosmic Clarity & Denoise and Siril (for star deconvolution). Seeing not perticularly good (FWHM of stars ~ 3" - 6 pixels). This meant star alignment and stacking resulted in some non-spherical stars, which was mostly corrected with Siril's star deconvolution script. Also several bright stars produced exaggerated spikes from the secondary mirror supports and these were made worse with inaccurate manual field derotation. Finally image framing was not ideal but the best I could do given the significant separation between NGC 3193 and 3195.

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